Replace "fall though" with a proper "fall through" annotation.
This fix is part of the ongoing efforts to enabling
-Wimplicit-fallthrough
Addresses-Coverity-ID: 402013 ("Missing break in switch")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
In some setups restoring the BGRT logo is undesirable, allow passing
video=efifb:nobgrt on the kernel commandline to disable it.
Reported-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
OMAPFB_MEMORY_READ ioctl reads pixels from the LCD's memory and copies
them to a userspace buffer. The code has two issues:
- The user provided width and height could be large enough to overflow
the calculations
- The copy_to_user() can copy uninitialized memory to the userspace,
which might contain sensitive kernel information.
Fix these by limiting the width & height parameters, and only copying
the amount of data that we actually received from the LCD.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Jann Horn <jannh@google.com>
Cc: stable@vger.kernel.org
Cc: security@kernel.org
Cc: Will Deacon <will.deacon@arm.com>
Cc: Jann Horn <jannh@google.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
These names have been renamed in the CTA-861 standard due to trademark
issues. Replace them here as well so they are in sync with the standard.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Cc: stable@vger.kernel.org
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
As original license mentioned, it is GPL-2.0 in SPDX.
Then, MODULE_LICENSE() should be "GPL v2" instead of "GPL".
See ${LINUX}/include/linux/module.h
"GPL" [GNU Public License v2 or later]
"GPL v2" [GNU Public License v2]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
As original license mentioned, it is GPL-2.0 in SPDX.
Then, MODULE_LICENSE() should be "GPL v2" instead of "GPL".
See ${LINUX}/include/linux/module.h
"GPL" [GNU Public License v2 or later]
"GPL v2" [GNU Public License v2]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
DRM drivers really, really, really don't want random userspace to
share buffer behind it's back, bypassing the dma-buf buffer sharing
machanism. For that reason we've ruthlessly rejected any IOCTL
exposing the physical address of any graphics buffer.
Unfortunately fbdev comes with that built-in. We could just set
smem_start to 0, but that means we'd have to hand-roll our own fb_mmap
implementation. For good reasons many drivers do that, but
smem_start/length is still super convenient.
Hence instead just stop the leak in the ioctl, to keep fb mmap working
as-is. A second patch will set this flag for all drm drivers.
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180822085405.10787-3-daniel.vetter@ffwll.ch
It was only used by the panic support in fbcon, which is now gone.
Remove this now dead code too.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Joe Perches <joe@perches.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Meng Xu <mengxu.gatech@gmail.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: Mike Frysinger <vapier@chromium.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: David Lechner <david@lechnology.com>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180822085405.10787-2-daniel.vetter@ffwll.ch
This was only added for the drm's fbdev emulation support, so that it
would try harder to show the Oops.
Unfortunately this never really worked reliably, and in practice ended
up pushing the real Oops off the screen due to plentyfull locking,
sleep-while-atomic and other issues. So we removed all that support
from the fbdev emulation a while back. Aside: We've also removed the
kgdb support, for similar reasons.
Since it's such a small patch I figured I don't split this up into the
usual 3-phase removal.
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Alexander Kapshuk <alexander.kapshuk@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: David Lechner <david@lechnology.com>
Cc: nouveau@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180822085405.10787-1-daniel.vetter@ffwll.ch
No functional changes
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Almost all PCI drivers using remove_conflicting_framebuffers() wrap it
with the same code.
v2: add kerneldoc for DRM helper
v3: propagate remove_conflicting_framebuffers() return value
+ move kerneldoc to where function is implemented
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/7db1c278276de420eb45a1b71d06b5eb6bbd49ef.1535810304.git.mirq-linux@rere.qmqm.pl
- add support for deferred console takeover, when enabled defers
fbcon taking over the console from the dummy console until the
first text is displayed on the console - together with the "quiet"
kernel commandline option this allows fbcon to still be used
together with a smooth graphical bootup (Hans de Goede)
- improve console locking debugging code (Thomas Zimmermann)
- copy the ACPI BGRT boot graphics to the framebuffer when deferred
console takeover support is used in efifb driver (Hans de Goede)
- update udlfb driver - fix lost console when the user unplugs a USB
adapter, fix the screen corruption issue, fix locking and add some
performance optimizations (Mikulas Patocka)
- update pxafb driver - fix using uninitialized memory, switch to
devm_* API, handle initialization errors and add support for
lcd-supply regulator (Daniel Mack)
- add support for boards booted with a DeviceTree in pxa3xx_gcu
driver (Daniel Mack)
- rename omap2 module to omap2fb.ko to avoid conflicts with omap1
driver (Arnd Bergmann)
- enable ACPI-based enumeration for goldfishfb driver (Yu Ning)
- fix goldfishfb driver to make user space Android code use 60 fps
(Christoffer Dall)
- print big fat warning when nomodeset kernel parameter is used in
vgacon driver (Lyude Paul)
- remove VLA usage from fsl-diu-fb driver (Kees Cook)
- misc fixes (Julia Lawall, Geert Uytterhoeven, Fredrik Noring,
Yisheng Xie, Dan Carpenter, Daniel Vetter, Anton Vasilyev, Randy
Dunlap, Gustavo A. R. Silva, Colin Ian King, Fengguang Wu)
- misc cleanups (Roman Kiryanov, Yisheng Xie, Colin Ian King)
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Merge tag 'fbdev-v4.19' of https://github.com/bzolnier/linux
Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"Mostly small fixes and cleanups for fb drivers (the biggest updates
are for udlfb and pxafb drivers). This also adds deferred console
takeover support to the console code and efifb driver.
Summary:
- add support for deferred console takeover, when enabled defers
fbcon taking over the console from the dummy console until the
first text is displayed on the console - together with the "quiet"
kernel commandline option this allows fbcon to still be used
together with a smooth graphical bootup (Hans de Goede)
- improve console locking debugging code (Thomas Zimmermann)
- copy the ACPI BGRT boot graphics to the framebuffer when deferred
console takeover support is used in efifb driver (Hans de Goede)
- update udlfb driver - fix lost console when the user unplugs a USB
adapter, fix the screen corruption issue, fix locking and add some
performance optimizations (Mikulas Patocka)
- update pxafb driver - fix using uninitialized memory, switch to
devm_* API, handle initialization errors and add support for
lcd-supply regulator (Daniel Mack)
- add support for boards booted with a DeviceTree in pxa3xx_gcu
driver (Daniel Mack)
- rename omap2 module to omap2fb.ko to avoid conflicts with omap1
driver (Arnd Bergmann)
- enable ACPI-based enumeration for goldfishfb driver (Yu Ning)
- fix goldfishfb driver to make user space Android code use 60 fps
(Christoffer Dall)
- print big fat warning when nomodeset kernel parameter is used in
vgacon driver (Lyude Paul)
- remove VLA usage from fsl-diu-fb driver (Kees Cook)
- misc fixes (Julia Lawall, Geert Uytterhoeven, Fredrik Noring,
Yisheng Xie, Dan Carpenter, Daniel Vetter, Anton Vasilyev, Randy
Dunlap, Gustavo A. R. Silva, Colin Ian King, Fengguang Wu)
- misc cleanups (Roman Kiryanov, Yisheng Xie, Colin Ian King)"
* tag 'fbdev-v4.19' of https://github.com/bzolnier/linux: (54 commits)
Documentation/fb: corrections for fbcon.txt
fbcon: Do not takeover the console from atomic context
dummycon: Stop exporting dummycon_[un]register_output_notifier
fbcon: Only defer console takeover if the current console driver is the dummycon
fbcon: Only allow FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER if fbdev is builtin
fbdev: omap2: omapfb: fix ifnullfree.cocci warnings
fbdev: omap2: omapfb: fix bugon.cocci warnings
fbdev: omap2: omapfb: fix boolreturn.cocci warnings
fb: amifb: fix build warnings when not builtin
fbdev/core: Disable console-lock warnings when fb.lockless_register_fb is set
console: Replace #if 0 with atomic var 'ignore_console_lock_warning'
udlfb: use spin_lock_irq instead of spin_lock_irqsave
udlfb: avoid prefetch
udlfb: optimization - test the backing buffer
udlfb: allow reallocating the framebuffer
udlfb: set line_length in dlfb_ops_set_par
udlfb: handle allocation failure
udlfb: set optimal write delay
udlfb: make a local copy of fb_ops
udlfb: don't switch if we are switching to the same videomode
...
- Remove unused/obsolete code/comments
- New Functionality
- Allow less granular brightness specification for high-res PWMs; pwm_bl
- Align brightness {inc,dec}rements with that perceived by the human-eye; pwm_bl
- Fix-ups
- Prepare for the introduction of -Wimplicit-fall-through; adp8860_bl
- Bug Fixes
- Fix uninitialised variable; pwm_bl
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Merge tag 'backlight-next-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Core Framework:
- Remove unused/obsolete code/comments
New Functionality:
- Allow less granular brightness specification for high-res PWMs; pwm_bl
- Align brightness {inc,dec}rements with that perceived by the human-eye; pwm_bl
Fix-ups:
- Prepare for the introduction of -Wimplicit-fall-through; adp8860_bl
Bug Fixes:
- Fix uninitialised variable; pwm_bl"
* tag 'backlight-next-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: pwm_bl: Fix uninitialized variable
backlight: adp8860: Mark expected switch fall-through
backlight: Remove obsolete comment for ->state
dt-bindings: pwm-backlight: Move brightness-levels to optional
backlight: pwm_bl: Compute brightness of LED linearly to human eye
dt-bindings: pwm-backlight: Add a num-interpolation-steps property
backlight: pwm_bl: Linear interpolation between brightness-levels
Here is the bit set of char/misc drivers for 4.19-rc1
There is a lot here, much more than normal, seems like everyone is
writing new driver subsystems these days... Anyway, major things here
are:
- new FSI driver subsystem, yet-another-powerpc low-level
hardware bus
- gnss, finally an in-kernel GPS subsystem to try to tame all of
the crazy out-of-tree drivers that have been floating around
for years, combined with some really hacky userspace
implementations. This is only for GNSS receivers, but you
have to start somewhere, and this is great to see.
Other than that, there are new slimbus drivers, new coresight drivers,
new fpga drivers, and loads of DT bindings for all of these and existing
drivers.
Full details of everything is in the shortlog.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the bit set of char/misc drivers for 4.19-rc1
There is a lot here, much more than normal, seems like everyone is
writing new driver subsystems these days... Anyway, major things here
are:
- new FSI driver subsystem, yet-another-powerpc low-level hardware
bus
- gnss, finally an in-kernel GPS subsystem to try to tame all of the
crazy out-of-tree drivers that have been floating around for years,
combined with some really hacky userspace implementations. This is
only for GNSS receivers, but you have to start somewhere, and this
is great to see.
Other than that, there are new slimbus drivers, new coresight drivers,
new fpga drivers, and loads of DT bindings for all of these and
existing drivers.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits)
android: binder: Rate-limit debug and userspace triggered err msgs
fsi: sbefifo: Bump max command length
fsi: scom: Fix NULL dereference
misc: mic: SCIF Fix scif_get_new_port() error handling
misc: cxl: changed asterisk position
genwqe: card_base: Use true and false for boolean values
misc: eeprom: assignment outside the if statement
uio: potential double frees if __uio_register_device() fails
eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency
misc: ti-st: Fix memory leak in the error path of probe()
android: binder: Show extra_buffers_size in trace
firmware: vpd: Fix section enabled flag on vpd_section_destroy
platform: goldfish: Retire pdev_bus
goldfish: Use dedicated macros instead of manual bit shifting
goldfish: Add missing includes to goldfish.h
mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux
dt-bindings: mux: add adi,adgs1408
Drivers: hv: vmbus: Cleanup synic memory free path
Drivers: hv: vmbus: Remove use of slow_virt_to_phys()
Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind()
...
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Merge tag 'media/v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- new Socionext MN88443x ISDB-S/T demodulator driver: mn88443x
- new sensor drivers: ak7375, ov2680 and rj54n1cb0c
- an old soc-camera sensor driver converted to the V4L2 framework:
mt9v111
- a new Voice-Coil Motor (VCM) driver: dw9807-vcm
- some cleanups at cx25821, removing legacy unused code
- some improvements at ddbridge driver
- new platform driver: vicodec
- some DVB API cleanups, removing ioctls and compat code for old
out-of-tree drivers that were never merged upstream
- improvements at DVB core to support frontents that support both
Satellite and non-satellite delivery systems
- got rid of the unused VIDIOC_RESERVED V4L2 ioctl
- some cleanups/improvements at gl861 ISDB driver
- several improvements on ov772x, ov7670 and ov5640, imx274, ov5645,
and smiapp sensor drivers
- fixes at em28xx to support dual TS devices
- some cleanups at V4L2/VB2 locking logic
- some API improvements at media controller
- some cec core and drivers improvements
- some uvcvideo improvements
- some improvements at platform drivers: stm32-dcmi, rcar-vin, coda,
reneseas-ceu, imx, vsp1, venus, camss
- lots of other cleanups and fixes
* tag 'media/v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (406 commits)
Revert "media: vivid: shut up warnings due to a non-trivial logic"
siano: get rid of an unused return code for debugfs register
media: isp: fix a warning about a wrong struct initializer
media: radio-wl1273: fix return code for the polling routine
media: s3c-camif: fix return code for the polling routine
media: saa7164: fix return codes for the polling routine
media: exynos-gsc: fix return code if mutex was interrupted
media: mt9v111: Fix build error with no VIDEO_V4L2_SUBDEV_API
media: xc4000: get rid of uneeded casts
media: drxj: get rid of uneeded casts
media: tuner-xc2028: don't use casts for printing sizes
media: cleanup fall-through comments
media: vivid: shut up warnings due to a non-trivial logic
media: rtl28xxu: be sure that it won't go past the array size
media: mt9v111: avoid going past the buffer
media: vsp1_dl: add a description for cmdpool field
media: sta2x11: add a missing parameter description
media: v4l2-mem2mem: add descriptions to MC fields
media: i2c: fix warning in Aptina MT9V111
media: imx: shut up a false positive warning
...
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Merge tag 'drm-next-2018-08-15' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"This is the main drm pull request for 4.19.
Rob has some new hardware support for new qualcomm hw that I'll send
along separately. This has the display part of it, the remaining pull
is for the acceleration engine.
This also contains a wound-wait/wait-die mutex rework, Peter has acked
it for merging via my tree.
Otherwise mostly the usual level of activity. Summary:
core:
- Wound-wait/wait-die mutex rework
- Add writeback connector type
- Add "content type" property for HDMI
- Move GEM bo to drm_framebuffer
- Initial gpu scheduler documentation
- GPU scheduler fixes for dying processes
- Console deferred fbcon takeover support
- Displayport support for CEC tunneling over AUX
panel:
- otm8009a panel driver fixes
- Innolux TV123WAM and G070Y2-L01 panel driver
- Ilitek ILI9881c panel driver
- Rocktech RK070ER9427 LCD
- EDT ETM0700G0EDH6 and EDT ETM0700G0BDH6
- DLC DLC0700YZG-1
- BOE HV070WSA-100
- newhaven, nhd-4.3-480272ef-atxl LCD
- DataImage SCF0700C48GGU18
- Sharp LQ035Q7DB03
- p079zca: Refactor to support multiple panels
tinydrm:
- ILI9341 display panel
New driver:
- vkms - virtual kms driver to testing.
i915:
- Icelake:
Display enablement
DSI support
IRQ support
Powerwell support
- GPU reset fixes and improvements
- Full ppgtt support refactoring
- PSR fixes and improvements
- Execlist improvments
- GuC related fixes
amdgpu:
- Initial amdgpu documentation
- JPEG engine support on VCN
- CIK uses powerplay by default
- Move to using core PCIE functionality for gens/lanes
- DC/Powerplay interface rework
- Stutter mode support for RV
- Vega12 Powerplay updates
- GFXOFF fixes
- GPUVM fault debugging
- Vega12 GFXOFF
- DC improvements
- DC i2c/aux changes
- UVD 7.2 fixes
- Powerplay fixes for Polaris12, CZ/ST
- command submission bo_list fixes
amdkfd:
- Raven support
- Power management fixes
udl:
- Cleanups and fixes
nouveau:
- misc fixes and cleanups.
msm:
- DPU1 support display controller in sdm845
- GPU coredump support.
vmwgfx:
- Atomic modesetting validation fixes
- Support for multisample surfaces
armada:
- Atomic modesetting support completed.
exynos:
- IPPv2 fixes
- Move g2d to component framework
- Suspend/resume support cleanups
- Driver cleanups
imx:
- CSI configuration improvements
- Driver cleanups
- Use atomic suspend/resume helpers
- ipu-v3 V4L2 XRGB32/XBGR32 support
pl111:
- Add Nomadik LCDC variant
v3d:
- GPU scheduler jobs management
sun4i:
- R40 display engine support
- TCON TOP driver
mediatek:
- MT2712 SoC support
rockchip:
- vop fixes
omapdrm:
- Workaround for DRA7 errata i932
- Fix mm_list locking
mali-dp:
- Writeback implementation
PM improvements
- Internal error reporting debugfs
tilcdc:
- Single fix for deferred probing
hdlcd:
- Teardown fixes
tda998x:
- Converted to a bridge driver.
etnaviv:
- Misc fixes"
* tag 'drm-next-2018-08-15' of git://anongit.freedesktop.org/drm/drm: (1506 commits)
drm/amdgpu/sriov: give 8s for recover vram under RUNTIME
drm/scheduler: fix param documentation
drm/i2c: tda998x: correct PLL divider calculation
drm/i2c: tda998x: get rid of private fill_modes function
drm/i2c: tda998x: move mode_valid() to bridge
drm/i2c: tda998x: register bridge outside of component helper
drm/i2c: tda998x: cleanup from previous changes
drm/i2c: tda998x: allocate tda998x_priv inside tda998x_create()
drm/i2c: tda998x: convert to bridge driver
drm/scheduler: fix timeout worker setup for out of order job completions
drm/amd/display: display connected to dp-1 does not light up
drm/amd/display: update clk for various HDMI color depths
drm/amd/display: program display clock on cache match
drm/amd/display: Add NULL check for enabling dp ss
drm/amd/display: add vbios table check for enabling dp ss
drm/amd/display: Don't share clk source between DP and HDMI
drm/amd/display: Fix DP HBR2 Eye Diagram Pattern on Carrizo
drm/amd/display: Use calculated disp_clk_khz value for dce110
drm/amd/display: Implement custom degamma lut on dcn
drm/amd/display: Destroy aux_engines only once
...
Taking over the console involves allocating mem with GFP_KERNEL, talking
to drm drivers, etc. So this should not be done from an atomic context.
But the console-output trigger deferred console takeover may happen from an
atomic context, which leads to "BUG: sleeping function called from invalid
context" errors.
This commit fixes these errors by doing the deferred takeover from a
workqueue.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[b.zolnierkie: remove unused variable]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Now that we only allow FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER when
fbdev+fbcon are builtin exporting these is no longer necessary.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
We rely on dummycon's output notifier mechanism to defer the takeover.
If say vgacon is the current console driver then dummycon will never get
used so its output notifier will also never get called and fbcon never
takes over. This commit fixes this by only deferring the console takeover
if the current console driver is the dummycon driver.
This commit also moves the entirety of fbcon_start under the console_lock,
since the conswitchp which fbcon_start now checks is protected by it.
This commit also inlines fbcon_register_output_notifier, since we now
need a #ifdef CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER in fbcon_start
anyways because of the write access to the deferred_takeover variable,
this has the added advantage that it puts the
dummycon_register_output_notifier() call directly after the "conswitchp !=
&dummy_con" comparison making it clear why that check is there.
Note the arch setup code will set conswitchp to either dummy_con or
vga_con, in the cases where it gets set to vga_con even though their is
no vga_con present we rely on vga_con_startup() to set conswitchp to
dummy_con. vga_con_startup() is guaranteed to happen before
fb_console_init() as it gets called as a console_initcall where as
fb_console_init() gets called as a subsys_initcall.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Having FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER with fbdev+fbcon being build
as a module does not make much sense.
Having FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER only when fbdev+fbcon are
builtin was always the intention, hence the =y checks but they were
checking the wrong option, fbcon is build as part of fb.ko, so we must
check for FB=y.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
drivers/video/fbdev/omap2/omapfb/dss/dss_features.c:895:2-5: WARNING: Use BUG_ON instead of if condition followed by BUG.
Please make sure the condition has no side effects (see conditional BUG_ON definition in include/asm-generic/bug.h)
Use BUG_ON instead of a if condition followed by BUG.
Semantic patch information:
This makes an effort to find cases where BUG() follows an if
condition on an expression and replaces the if condition and BUG()
with a BUG_ON having the conditional expression of the if statement
as argument.
Generated by: scripts/coccinelle/misc/bugon.cocci
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
drivers/video/fbdev/omap2/omapfb/omapfb-main.c:290:9-10: WARNING: return of 0/1 in function 'cmp_var_to_colormode' with return type bool
Return statements in functions returning bool should use
true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
drivers/video/fbdev/omap2/omapfb/dss/core.c:141:2-26: WARNING: NULL check before some freeing functions is not needed.
NULL check before some freeing functions is not needed.
Based on checkpatch warning
"kfree(NULL) is safe this check is probably not required"
and kfreeaddr.cocci by Julia Lawall.
Generated by: scripts/coccinelle/free/ifnullfree.cocci
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
drivers/video/fbdev/omap2/omapfb/dss/core.c:141:2-26: WARNING: NULL check before some freeing functions is not needed.
NULL check before some freeing functions is not needed.
Based on checkpatch warning
"kfree(NULL) is safe this check is probably not required"
and kfreeaddr.cocci by Julia Lawall.
Generated by: scripts/coccinelle/free/ifnullfree.cocci
Fixes: 7378f11498 ("media: omap2: omapfb: allow building it with COMPILE_TEST")
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
drivers/video/fbdev/omap2/omapfb/dss/dss_features.c:895:2-5: WARNING: Use BUG_ON instead of if condition followed by BUG.
Please make sure the condition has no side effects (see conditional BUG_ON definition in include/asm-generic/bug.h)
Use BUG_ON instead of a if condition followed by BUG.
Semantic patch information:
This makes an effort to find cases where BUG() follows an if
condition on an expression and replaces the if condition and BUG()
with a BUG_ON having the conditional expression of the if statement
as argument.
Generated by: scripts/coccinelle/misc/bugon.cocci
Fixes: 7378f11498 ("media: omap2: omapfb: allow building it with COMPILE_TEST")
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
drivers/video/fbdev/omap2/omapfb/omapfb-main.c:290:9-10: WARNING: return of 0/1 in function 'cmp_var_to_colormode' with return type bool
Return statements in functions returning bool should use
true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci
Fixes: 7378f11498 ("media: omap2: omapfb: allow building it with COMPILE_TEST")
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Fix build warning when built as a loadable module.
amifb_setup() and amifb_setup_mcap() are only needed when the driver
is builtin.
This matches how the functions are called (using #ifndef MODULE).
../drivers/video/fbdev/amifb.c:2344:19: warning: 'amifb_setup' defined but not used [-Wunused-function]
static int __init amifb_setup(char *options)
../drivers/video/fbdev/amifb.c:2307:20: warning: 'amifb_setup_mcap' defined but not used [-Wunused-function]
static void __init amifb_setup_mcap(char *spec)
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
If the console is unlocked during registration, the console subsystem
generates significant amounts of warnings, which obfuscate actual
debugging messages. Setting ignore_console_lock_warning while debugging
console registration avoid the noise.
v3:
- manipulate ignore_console_lock_warning with atomic_{inc,dec}
v2:
- restore ignore_console_lock_warning if lock_fb_info() fails
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
spin_lock_irqsave and spin_unlock_irqrestore is inteded to be called from
a context where it is unknown if interrupts are enabled or disabled (such
as interrupt handlers). From a process context, we should call
spin_lock_irq and spin_unlock_irq, that avoids the costly pushf and popf
instructions.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Modern processors can detect linear memory accesses and prefetch data
automatically, so there's no need to use prefetch.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Currently, the udlfb driver only tests for identical bytes at the
beginning or at the end of a page and renders anything between the first
and last mismatching pixel. But pages are not the same as lines, so this
is quite suboptimal - if there is something modified at the beginning of a
page and at the end of a page, the whole page is rendered, even if most of
the page is not modified.
This patch makes it test for identical pixels at the beginning and end of
each rendering command. This patch improves identical byte detection by
41% when playing video in a window.
This patch also fixes a possible screen corruption if the user is writing
to the framebuffer while dlfb_render_hline is in progress - the pixel data
that is copied to the backbuffer with memcpy may be different from the
pixel data that is actually rendered to the hardware (because the content
of the framebuffer may change between memcpy and the rendering command).
We must make sure that we copy exactly the same pixel as the pixel that is
being rendered.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
[b.zolnierkie: fix code indent]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This patch changes udlfb so that it may reallocate the framebuffer when
setting higher-resolution mode. If we boot the system without monitor
attached, udlfb creates a framebuffer with the size 800x600. This patch
makes it possible to select higher videomode with the fbset command when
a monitor is attached.
Note that there is no reliable way to prevent the system from touching the
old framebuffer, so we must not free it. We add it to the list
dlfb->deferred_free and free it when the driver is unloaded.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
[b.zolnierkie: sparse fixes]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Set the variable "line_length" in the function dlfb_ops_set_par. Without
this, we get garbage if we select different videomode with fbset.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Allocations larger than PAGE_ALLOC_COSTLY_ORDER are unreliable and they
may fail anytime. This patch fixes the udlfb driver so that when a large
alloactions fails, it tries to do multiple smaller allocations.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The defio subsystem overwrites the method fb_osp->mmap. That method is
stored in module's static data - and that means that if we have multiple
diplaylink adapters, they will over write each other's method.
In order to avoid interference between multiple adapters, we copy the
fb_ops structure to a device-local memory.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The udlfb driver reprograms the hardware everytime the user switches the
console, that makes quite unusable when working on the console.
This patch makes the driver remember the videomode we are in and avoid
reprogramming the hardware if we switch to the same videomode.
We mask the "activate" field and the "FB_VMODE_SMOOTH_XPAN" flag when
comparing the videomode, because they cause spurious switches when
switching to and from the Xserver.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The displaylink hardware has such a peculiarity that it doesn't render a
command until next command is received. This produces occasional
corruption, such as when setting 22x11 font on the console, only the first
line of the cursor will be blinking if the cursor is located at some
specific columns.
When we end up with a repeating pixel, the driver has a bug that it leaves
one uninitialized byte after the command (and this byte is enough to flush
the command and render it - thus it fixes the screen corruption), however
whe we end up with a non-repeating pixel, there is no byte appended and
this results in temporary screen corruption.
This patch fixes the screen corruption by always appending a byte 0xAF at
the end of URB. It also removes the uninitialized byte.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
I observed that the performance of the udl fb driver degrades over time.
On a freshly booted machine, it takes 6 seconds to do "ls -la /usr/bin";
after some time of use, the same operation takes 14 seconds.
The reason is that the value of "limit_sem" decays over time.
The udl driver uses a semaphore "limit_set" to specify how many free urbs
are there on dlfb->urbs.list. If the count is zero, the "down" operation
will sleep until some urbs are added to the freelist.
In order to avoid some hypothetical deadlock, the driver will not call
"up" immediately, but it will offload it to a workqueue. The problem is
that if we call "schedule_delayed_work" on the same work item multiple
times, the work item may only be executed once.
This is happening:
* some urb completes
* dlfb_urb_completion adds it to the free list
* dlfb_urb_completion calls schedule_delayed_work to schedule the function
dlfb_release_urb_work to increase the semaphore count
* as the urb is on the free list, some other task grabs it and submits it
* the submitted urb completes, dlfb_urb_completion is called again
* dlfb_urb_completion calls schedule_delayed_work, but the work is already
scheduled, so it does nothing
* finally, dlfb_release_urb_work is called, it increases the semaphore
count by 1, although it should increase it by 2
So, the semaphore count is decreasing over time, and this causes gradual
performance degradation.
Note that in the current kernel, the "up" function may be called from
interrupt and it may race with the "down" function called by another
thread, so we don't have to offload the call of "up" to a workqueue at
all. This patch removes the workqueue code. The patch also changes
"down_interruptible" to "down" in dlfb_free_urb_list, so that we will
clean up the driver properly even if a signal arrives.
With this patch, the performance of udlfb no longer degrades.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
[b.zolnierkie: fix immediatelly -> immediately typo]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
I have a USB display adapter using the udlfb driver and I use it on an ARM
board that doesn't have any graphics card. When I plug the adapter in, the
console is properly displayed, however when I unplug and re-plug the
adapter, the console is not displayed and I can't access it until I reboot
the board.
The reason is this:
When the adapter is unplugged, dlfb_usb_disconnect calls
unlink_framebuffer, then it waits until the reference count drops to zero
and then it deallocates the framebuffer. However, the console that is
attached to the framebuffer device keeps the reference count non-zero, so
the framebuffer device is never destroyed. When the USB adapter is plugged
again, it creates a new device /dev/fb1 and the console is not attached to
it.
This patch fixes the bug by unbinding the console from unlink_framebuffer.
The code to unbind the console is moved from do_unregister_framebuffer to
a function unbind_console. When the console is unbound, the reference
count drops to zero and the udlfb driver frees the framebuffer. When the
adapter is plugged back, a new framebuffer is created and the console is
attached to it.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Bernie Thompson <bernie@plugable.com>
Cc: Ladislav Michl <ladis@linux-mips.org>
Cc: stable@vger.kernel.org
[b.zolnierkie: preserve old behavior for do_unregister_framebuffer()]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Currently, if the DT does not define num-interpolated-steps then
num_steps is undefined and the interpolation code will deploy randomly.
Fix with a simple initialize to zero.
Fixes: 573fe6d1c2 ("backlight: pwm_bl: Linear interpolation between brightness-levels")
Reported-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
On x86 some firmwares use a low non native resolution for the display when
they have shown some text messages. While keeping the bgrt filled with info
for the native resolution. If the bgrt image intended for the native
resolution still fits, it will be displayed very close to the right edge of
the display looking quite bad.
This commits adds a (heuristics based) checks for this and makes efifb
not show the boot graphics when this is the case.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Fix indentation warning (from gcc 8.1.0) in omap2/omapfb:
../drivers/video/fbdev/omap2/omapfb/dss/dispc.c: In function 'pixinc':
../drivers/video/fbdev/omap2/omapfb/dss/dispc.c:1859:2: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
else
^~~~
../drivers/video/fbdev/omap2/omapfb/dss/dispc.c:1861:3: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
return 0;
^~~~~~
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Pointer 'in' is being assigned but is never used hence it is
redundant and can be removed.
Cleans up clang warning:
warning: variable 'in' set but not used [-Wunused-but-set-variable]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The value of tmp being used in the switch statement has the range of
just 0..3 hence the case 4 statement can never be reached and is
deadcode and can be removed.
Detected by CoverityScan, CID#744384 ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The omapfb_register_client[] array has OMAPFB_PLANE_NUM elements so the
> should be >= or we are one element beyond the end of the array.
Fixes: 8b08cf2b64 ("OMAP: add TI OMAP framebuffer driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Fix a build warning in viafbdev.c when CONFIG_PROC_FS is not enabled
by marking the unused function as __maybe_unused.
../drivers/video/fbdev/via/viafbdev.c:1471:12: warning: 'viafb_sup_odev_proc_show' defined but not used [-Wunused-function]
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
In a kernel configuration with both CONFIG_FB_OMAP=m and CONFIG_FB_OMAP2=m,
Kbuild fails to point out that we have two modules with the same name (omapfb.ko),
but instead fails with a cryptic error message like:
ERROR: "omapfb_register_panel" [drivers/video/fbdev/omap/lcd_osk.ko] undefined!
This can now happen when building a randconfig kernel with CONFIG_ARCH_OMAP1,
as the omap1 fbdev driver depends on that, whiel the omap2 fbdev driver can
now be built anywhere with CONFIG_COMPILE_TEST.
The solution is to rename one of the two modules, so for consistency with
the directory naming I decided to rename the omap2 version to omap2fb.ko.
Fixes: 7378f11498 ("media: omap2: omapfb: allow building it with COMPILE_TEST")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
goldfish_fb_probe() allocates memory for fb, but goldfish_fb_remove() does
not have deallocation of fb, which leads to memory leak on probe/remove.
The patch adds deallocation into goldfish_fb_remove().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru>
Cc: Aleksandar Markovic <aleksandar.markovic@mips.com>
Cc: Miodrag Dinic <miodrag.dinic@mips.com>
Cc: Goran Ferenc <goran.ferenc@mips.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Fix up the indenting that confused sphinx. To make sure we
don't have to make the examples unreadable with escaping just
put them in as block quotes, that seems the simplest solution.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[b.zolnierkie: ported over fbdev changes]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The "mem" buffer has "size" bytes. The ">" should be ">=" to prevent
reading one character beyond the end of the array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
It's been a pretty good while since kernel modesetting was introduced.
It has almost entirely replaced previous solutions which required
userspace modesetting, and I can't even recall any drivers off the top
of my head for modern day hardware that don't only support one or the
other. Even nvidia's ugly blob does not require the use of nomodeset,
and only requires that nouveau be blacklisted.
Effectively, the only thing nomodeset does in the year 2018 is disable
your graphics drivers. Since VESA is a thing, this will give many users
the false impression that they've actually fixed an issue they were
having with their machine simply because the laptop will boot up to a
degraded GUI. This of course, is never actually the case.
Things get even worse when you consider that there's still an enormous
amount of tutorials users find on the internet that still suggest adding
nomodeset, along with various users who have been around long enough to
still suggest it.
There really isn't any legitimate reason I can see for this to be an
option that's used by anyone else other then developers, or properly
informed users. So, let's end the confusion and start printing warnings
whenever it's enabled.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Jan H. Schönherr" <jschoenh@amazon.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Following pattern is often used:
for (i = 0; i < FB_MAX; i++) {
if (registered_fb[i]) {
...
}
}
Therefore, as Andy's suggestion, for_each_registered_fb() helper can
be introduced to make the code easier to read and write by reducing
indentation level. It also saves few lines of code in each occurrence.
This patch convert all part here at the same time.
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Yisheng Xie <ysxie@foxmail.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Lechner <david@lechnology.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
In the quest to remove all stack VLA usage from the kernel[1], this moves
the buffer off the stack (since it could be as much as 1024 bytes), and
uses a new area in the cursor data structure. Additionally adds missed
documentation and removes redundant assignments.
[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Timur Tabi <timur@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Optionally obtain a lcd-supply regulator during probe and use it in
__pxafb_lcd_power() to switch the power supply of LCD panels.
This helps boards booted from DT to control such voltages without
callbacks.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
pxafb_init_fbinfo() can not only report errors caused by failed
allocations but also when the clock can't be found.
To fix this, return an error pointer instead of NULL in case of errors,
and up-chain the result.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This helps us clean up the probe() and remove() implementations.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
When parsing the video modes from DT properties, make sure to zero out
memory before using it. This is important because not all fields in the mode
struct are explicitly initialized, even though they are used later on.
Fixes: 420a488278 ("video: fbdev: pxafb: initial devicetree conversion")
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Add a device tree match table for this hardware graphics acceleration
driver so it can be used by pxa3xx boards booted with a devicetree.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
I discovered the problem when developing a frame buffer driver for the
PlayStation 2 (not yet merged), using the following video modes for the
PlayStation 3 in drivers/video/fbdev/ps3fb.c:
}, {
/* 1080if */
"1080if", 50, 1920, 1080, 13468, 148, 484, 36, 4, 88, 5,
FB_SYNC_BROADCAST, FB_VMODE_INTERLACED
}, {
/* 1080pf */
"1080pf", 50, 1920, 1080, 6734, 148, 484, 36, 4, 88, 5,
FB_SYNC_BROADCAST, FB_VMODE_NONINTERLACED
},
In ps3fb_probe, the mode_option module parameter is used with fb_find_mode
but it can only select the interlaced variant of 1920x1080 since the loop
matching the modes does not take the difference between interlaced and
progressive modes into account.
In short, without the patch, progressive 1920x1080 cannot be chosen as a
mode_option parameter since fb_find_mode (falsely) thinks interlace is a
perfect match.
Signed-off-by: Fredrik Noring <noring@nocrew.org>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
[b.zolnierkie: updated patch description]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
If the framebuffer address provided by the Graphics Output Protocol
(GOP) is covered by the UEFI memory map, it will tell us which memory
attributes are permitted when mapping this region. In some cases,
(KVM guest on ARM), violating this will result in loss of coherency,
which means that updates sent to the framebuffer by the guest will
not be observeable by the host, and the emulated display simply does
not work.
So if the memory map contains such a description, take the attributes
field into account, and add support for creating WT or WB mappings of
the framebuffer region.
Tested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Jones <pjones@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180711094040.12506-9-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
At over 4000 #includes, <linux/platform_device.h> is the 9th most
#included header file in the Linux kernel. It does not need
<linux/mod_devicetable.h>, so drop that header and explicitly add
<linux/mod_devicetable.h> to source files that need it.
4146 #include <linux/platform_device.h>
After this patch, there are 225 files that use <linux/mod_devicetable.h>,
for a reduction of around 3900 times that <linux/mod_devicetable.h>
does not have to be read & parsed.
225 #include <linux/mod_devicetable.h>
This patch was build-tested on 20 different arch-es.
It also makes these drivers SubmitChecklist#1 compliant.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kbuild test robot <lkp@intel.com> # drivers/media/platform/vimc/
Reported-by: kbuild test robot <lkp@intel.com> # drivers/pinctrl/pinctrl-u300.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When you want to change the brightness using a PWM signal, one thing you
need to consider is how human perceive the brightness. Human perceive
the brightness change non-linearly, we have better sensitivity at low
luminance than high luminance, so to achieve perceived linear dimming,
the brightness must be matches to the way our eyes behave. The CIE 1931
lightness formula is what actually describes how we perceive light.
This patch computes a default table with the brightness levels filled
with the numbers provided by the CIE 1931 algorithm, the number of the
brightness levels is calculated based on the PWM resolution.
The calculation of the table using the CIE 1931 algorithm is enabled by
default when you do not define the 'brightness-levels' propriety in your
device tree.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Setting num-interpolated-steps in the dts will allow you to have linear
interpolation between values of brightness-levels. This way a high
resolution pwm duty cycle can be used without having to list out every
possible value in the dts. This system also allows for gamma corrected
values.
The most simple example is interpolate between two brightness values a
number of steps, this can be done setting the following in the dts:
brightness-levels = <0 65535>;
num-interpolated-steps = <1024>;
default-brightness-level = <512>;
This will create a brightness-level table with the following values:
<0 63 126 189 252 315 378 441 ... 64260 64323 64386 64449 65535>
Another use case can be describe a gamma corrected curve, as we have
better sensitivity at low luminance than high luminance we probably
want have smaller steps for low brightness levels values and bigger
steps for high brightness levels values. This can be achieved with
the following in the dts:
brightness-levels = <0 4096 65535>;
num-interpolated-steps = <1024>;
default-brightness-level = <512>;
This will create a brightness-levels table with the following values:
<0 4 8 12 16 20 ... 4096 4156 4216 4276 ... 65535>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
On systems where fbcon is configured for deferred console takeover, the
intend is for the framebuffer to show the boot graphics (e.g a vendor
logo) until some message (e.g. an error) is printed or a graphical
session takes over.
Some firmware relies on the OS to show the boot graphics.
This patch adds support to efifb to show the boot graphics and
automatically enables this when fbcon is configured for deferred
console takeover.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Simplefb is not a clock provider, but it uses of_clk_get_parent_count(),
so it can just include <linux/of_clk.h> instead.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Return an error code on failure.
Problem found using Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
User space Android code identifies pixclock == 0 as a sign for emulation
and will set the frame rate to 60 fps when reading this value, which is
the desired outcome.
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Roman Kiryanov <rkir@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Add an ACPI id to make goldfish framebuffer to support ACPI enumeration.
Signed-off-by: Yu Ning <yu.ning@intel.com>
Signed-off-by: Roman Kiryanov <rkir@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Recent kernels support asynchronous probing; most hyperv drivers
can be probed async easily so set the required flag for this.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Export dummycon_[un]register_output_notifier, the fbcon code needs this
and may be build as a module.
Fixes: 83d83bebf4 ("console/fbcon: Add support for deferred console takeover")
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Currently fbcon claims fbdevs as soon as they are registered and takes over
the console as soon as the first fbdev gets registered.
This behavior is undesirable in cases where a smooth graphical bootup is
desired, in such cases we typically want the contents of the framebuffer
(typically a vendor logo) to stay in place as is.
The current solution for this problem (on embedded systems) is to not
enable fbcon.
This commit adds a new FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER config option,
which when enabled defers fbcon taking over the console from the dummy
console until the first text is displayed on the console. Together with the
"quiet" kernel commandline option, this allows fbcon to still be used
together with a smooth graphical bootup, having it take over the console as
soon as e.g. an error message is logged.
Note the choice to detect the first console output in the dummycon driver,
rather then handling this entirely inside the fbcon code, was made after
2 failed attempts to handle this entirely inside the fbcon code. The fbcon
code is woven quite tightly into the console code, making this to only
feasible option.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace comments about places where the console lock should be held with
calls to WARN_CONSOLE_UNLOCKED() to assert that it is actually held.
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
- can.rst: fix a footnote reference;
- crypto_engine.rst: Fix two parsing warnings;
- Fix a lot of broken references to Documentation/*;
- Improves the scripts/documentation-file-ref-check script,
in order to help detecting/fixing broken references,
preventing false-positives.
After this patch series, only 33 broken references to doc files are
detected by scripts/documentation-file-ref-check.
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Merge tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental
Pull documentation fixes from Mauro Carvalho Chehab:
"This solves a series of broken links for files under Documentation,
and improves a script meant to detect such broken links (see
scripts/documentation-file-ref-check).
The changes on this series are:
- can.rst: fix a footnote reference;
- crypto_engine.rst: Fix two parsing warnings;
- Fix a lot of broken references to Documentation/*;
- improve the scripts/documentation-file-ref-check script, in order
to help detecting/fixing broken references, preventing
false-positives.
After this patch series, only 33 broken references to doc files are
detected by scripts/documentation-file-ref-check"
* tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits)
fix a series of Documentation/ broken file name references
Documentation: rstFlatTable.py: fix a broken reference
ABI: sysfs-devices-system-cpu: remove a broken reference
devicetree: fix a series of wrong file references
devicetree: fix name of pinctrl-bindings.txt
devicetree: fix some bindings file names
MAINTAINERS: fix location of DT npcm files
MAINTAINERS: fix location of some display DT bindings
kernel-parameters.txt: fix pointers to sound parameters
bindings: nvmem/zii: Fix location of nvmem.txt
docs: Fix more broken references
scripts/documentation-file-ref-check: check tools/*/Documentation
scripts/documentation-file-ref-check: get rid of false-positives
scripts/documentation-file-ref-check: hint: dash or underline
scripts/documentation-file-ref-check: add a fix logic for DT
scripts/documentation-file-ref-check: accept more wildcards at filenames
scripts/documentation-file-ref-check: fix help message
media: max2175: fix location of driver's companion documentation
media: v4l: fix broken video4linux docs locations
media: dvb: point to the location of the old README.dvb-usb file
...
- mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)
- add missing module license tags to omap/omapfb driver (Arnd Bergmann)
- add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd Bergmann)
- convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
(Jia-Ju Bai)
- allow COMPILE_TEST build for viafb driver (media part was reviewed by
media subsystem Maintainer)
- remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm drivers
(drm parts were acked by shmob-drm driver Maintainer)
- remove unused auo_k190xfb drivers
- misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
Shevchenko, Colin Ian King)
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Merge tag 'fbdev-v4.18' of git://github.com/bzolnier/linux
Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"There is nothing really major here, few small fixes, some cleanups and
dead drivers removal:
- mark omapfb drivers as orphans in MAINTAINERS file (Tomi Valkeinen)
- add missing module license tags to omap/omapfb driver (Arnd
Bergmann)
- add missing GPIOLIB dependendy to omap2/omapfb driver (Arnd
Bergmann)
- convert savagefb, aty128fb & radeonfb drivers to use msleep & co.
(Jia-Ju Bai)
- allow COMPILE_TEST build for viafb driver (media part was reviewed
by media subsystem Maintainer)
- remove unused MERAM support from sh_mobile_lcdcfb and shmob-drm
drivers (drm parts were acked by shmob-drm driver Maintainer)
- remove unused auo_k190xfb drivers
- misc cleanups (Souptick Joarder, Wolfram Sang, Markus Elfring, Andy
Shevchenko, Colin Ian King)"
* tag 'fbdev-v4.18' of git://github.com/bzolnier/linux: (26 commits)
fb_omap2: add gpiolib dependency
video/omap: add module license tags
MAINTAINERS: make omapfb orphan
video: fbdev: pxafb: match_string() conversion fixup
video: fbdev: nvidia: fix spelling mistake: "scaleing" -> "scaling"
video: fbdev: fix spelling mistake: "frambuffer" -> "framebuffer"
video: fbdev: pxafb: Convert to use match_string() helper
video: fbdev: via: allow COMPILE_TEST build
video: fbdev: remove unused sh_mobile_meram driver
drm: shmobile: remove unused MERAM support
video: fbdev: sh_mobile_lcdcfb: remove unused MERAM support
video: fbdev: remove unused auo_k190xfb drivers
video: omap: Improve a size determination in omapfb_do_probe()
video: sm501fb: Improve a size determination in sm501fb_probe()
video: fbdev-MMP: Improve a size determination in path_init()
video: fbdev-MMP: Delete an error message for a failed memory allocation in two functions
video: auo_k190x: Delete an error message for a failed memory allocation in auok190x_common_probe()
video: sh_mobile_lcdcfb: Delete an error message for a failed memory allocation in two functions
video: sh_mobile_meram: Delete an error message for a failed memory allocation in sh_mobile_meram_probe()
video: fbdev: sh_mobile_meram: Drop SUPERH platform dependency
...
The script:
./scripts/documentation-file-ref-check --fix
Gives multiple hints for broken references on some files.
Manually use the one that applies for some files.
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
cmap->len can get close to INT_MAX/2, allowing for an integer overflow in
allocation. This uses kmalloc_array() instead to catch the condition.
Reported-by: Dr Silvio Cesare of InfoSect <silvio.cesare@gmail.com>
Fixes: 8bdb3a2d7d ("uvesafb: the driver core")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
- Provide helpers to enable/disable backlight
- Provide standard and devres versions OF find helpers
- New Drivers
- Add support for the Zodiac Inflight Innovations RAVE Supervisory Processor
- New Functionality
- Allow pwm-on/pwm-off delay to be specified via DT
- Bug Fixes
- Fix ordering of the power {en,dis}able and PWM {en,dis}able signals
- Fix Device Tree node look-up
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Merge tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Core Frameworks
- Provide helpers to enable/disable backlight
- Provide standard and devres versions OF find helpers
New Drivers:
- Add support for the Zodiac Inflight Innovations RAVE Supervisory
Processor
New Functionality:
- Allow pwm-on/pwm-off delay to be specified via DT
Bug Fixes:
- Fix ordering of the power {en,dis}able and PWM {en,dis}able
signals
- Fix Device Tree node look-up"
* tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: as3711_bl: Fix Device Tree node leaks
backlight: tps65217_bl: Fix Device Tree node lookup
backlight: max8925_bl: Fix Device Tree node lookup
backlight: as3711_bl: Fix Device Tree node lookup
MAINTAINERS: Add dri-devel for backlight subsystem patches
backlight: Nuke BL_CORE_DRIVER1
staging: fbtft: Stop using BL_CORE_DRIVER1
backlight: pandora: Stop using BL_CORE_DRIVER1
backlight: generic-bl: Remove DRIVER1 state
backlight: Nuke unused backlight.props.state states
backlight: otm3225a: Add support for ORISE OTM3225A LCD SoC
backlight: pwm_bl: Don't use GPIOF_* with gpiod_get_direction
pwm-backlight: Add support for PWM delays proprieties.
dt-bindings: pwm-backlight: Add PWM delay proprieties.
pwm-backlight: Enable/disable the PWM before/after LCD enable toggle.
dt-bindings: backlight: Add binding for RAVE SP backlight driver
backlight: Add RAVE SP backlight driver
Two framebuffer device-node names were looked up during probe, but were
only used as flags to indicate the presence of two framebuffer device.
Drop the unused framebuffer name along with a likewise unused device
pointer from the driver data, and update the platform data to pass in
booleans instead of the framebuffer strings. This allows us do drop the
node references acquired during probe, which would otherwise leak.
Note that there are no other in-kernel users of the modified
platform-data fields.
Fixes: 59eb2b5e57 ("drivers/video/backlight/as3711_bl.c: add OF support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.
This would only cause trouble if the child node is missing while there
is an unrelated node named "backlight" elsewhere in the tree.
Cc: stable <stable@vger.kernel.org> # 3.7
Fixes: eebfdc17cc ("backlight: Add TPS65217 WLED driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.
To make things worse, the parent mfd node was also prematurely freed,
while the child backlight node was leaked.
Cc: stable <stable@vger.kernel.org> # 3.9
Fixes: 47ec340cb8 ("mfd: max8925: Support dt for backlight")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at the parent rather than just matching
on its children.
To make things worse, the parent mfd node was also prematurely freed.
Cc: stable <stable@vger.kernel.org> # 3.10
Fixes: 59eb2b5e57 ("drivers/video/backlight/as3711_bl.c: add OF support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Building the omap sub-drivers when CONFIG_GPIOLIB is disabled causes
lots of build failures, either from using gpiolib interfaces, or from
including the wrong headers:
drivers/video/fbdev/omap2/omapfb/displays/encoder-opa362.c: In function 'opa362_enable':
drivers/video/fbdev/omap2/omapfb/displays/encoder-opa362.c:101:3: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration]
drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c: In function 'panel_dpi_enable':
drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c:86:2: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration]
drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c: In function 'panel_dpi_probe_pdata':
drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c:189:23: error: implicit declaration of function 'gpio_to_desc'; did you mean 'irq_to_desc'? [-Werror=implicit-function-declaration]
drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c: In function 'panel_dpi_probe_of':
drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c:210:9: error: implicit declaration of function 'devm_gpiod_get_optional'; did you mean 'devm_gpio_request_one'? [-Werror=implicit-function-declaration]
drivers/video/fbdev/omap2/omapfb/displays/panel-sharp-ls037v7dw01.c: In function 'sharp_ls_enable':
drivers/video/fbdev/omap2/omapfb/displays/panel-sharp-ls037v7dw01.c:120:3: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration]
drivers/video/fbdev/omap2/omapfb/displays/panel-lgphilips-lb035q02.c: In function 'lb035q02_enable':
drivers/video/fbdev/omap2/omapfb/displays/panel-lgphilips-lb035q02.c:170:3: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'? [-Werror=implicit-function-declaration]
drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c: In function 'hdmi_probe_of':
drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c:584:2: error: implicit declaration of function 'of_node_put'; did you mean 'node_set'? [-Werror=implicit-function-declaration]
drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c: In function 'hdmi_probe_of':
drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c:554:2: error: implicit declaration of function 'of_node_put'; did you mean 'node_set'? [-Werror=implicit-function-declaration]
Rather than fixing up each one individually, this just marks all of it
as depending on GPIOLIB.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[b.zolnierkie: patch title fixup]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
I got a bunch of warnings in a randconfig build:
WARNING: modpost: missing MODULE_LICENSE() in drivers/video/fbdev/omap/lcd_ams_delta.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/video/fbdev/omap/lcd_inn1510.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/video/fbdev/omap/lcd_palmte.o
WARNING: modpost: missing MODULE_LICENSE() in drivers/video/fbdev/omap/lcd_palmtt.o
These come from an earlier patch of mine that turned all display drivers
into separate modules. The fix is to add a MODULE_LICENSE tag. Since I'm
doing that, adding a description and author field also makes sense. I
went by the authors listed in the comment at the top of each file, but
removed Imre's Nokia email address that I assume is not valid any more,
since Imre is working at Intel these days.
Fixes: 81c44c2b2c ("video/omap: fix modular build")
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[b.zolnierkie: minor fixups]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Merge tag 'media/v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- remove of atomisp driver from staging, as nobody would have time to
dedicate huge efforts to fix all the problems there. Also, we have a
feeling that the driver may not even run the way it is.
- move Zoran driver to staging, in order to be either fixed to use VB2
and the proper media kAPIs or to be removed
- remove videobuf-dvb driver, with is unused for a while
- some V4L2 documentation fixes/improvements
- new sensor drivers: imx258 and ov7251
- a new driver was added to allow using I2C transparent drivers
- several improvements at the ddbridge driver
- several improvements at the ISDB pt1 driver, making it more coherent
with the DVB framework
- added a new platform driver for MIPI CSI-2 RX: cadence
- now, all media drivers can be compiled on x86 with COMPILE_TEST
- almost all media drivers now build on non-x86 architectures with
COMPILE_TEST
- lots of other random stuff: cleanups, support for new board models,
bug fixes, etc
* tag 'media/v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (464 commits)
media: omap2: fix compile-testing with FB_OMAP2=m
media: media/radio/Kconfig: add back RADIO_ISA
media: v4l2-ioctl.c: fix missing unlock in __video_do_ioctl()
media: pxa_camera: ignore -ENOIOCTLCMD from v4l2_subdev_call for s_power
media: arch: sh: migor: Fix TW9910 PDN gpio
media: staging: tegra-vde: Reset VDE regardless of memory client resetting failure
media: marvel-ccic: mmp: select VIDEOBUF2_VMALLOC/DMA_CONTIG
media: marvel-ccic: allow ccic and mmp drivers to coexist
media: uvcvideo: Prevent setting unavailable flags
media: ddbridge: conditionally enable fast TS for stv0910-equipped bridges
media: dvb-frontends/stv0910: make TS speed configurable
media: ddbridge/mci: add identifiers to function definition arguments
media: ddbridge/mci: protect against out-of-bounds array access in stop()
media: rc: ensure input/lirc device can be opened after register
media: rc: nuvoton: Keep device enabled during reg init
media: rc: nuvoton: Keep track of users on CIR enable/disable
media: rc: nuvoton: Tweak the interrupt enabling dance
media: uvcvideo: Support realtek's UVC 1.5 device
media: uvcvideo: Fix driver reference counting
media: gspca_zc3xx: Enable short exposure times for OV7648
...
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Merge tag 'drm-next-2018-06-06-1' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"This starts to support NVIDIA volta hardware with nouveau, and adds
amdgpu support for the GPU in the Kabylake-G (the intel + radeon
single package chip), along with some initial Intel icelake enabling.
Summary:
New Drivers:
- v3d - driver for broadcom V3D V3.x+ hardware
- xen-front - XEN PV display frontend
core:
- handle zpos normalization in the core
- stop looking at legacy pointers in atomic paths
- improved scheduler documentation
- improved aspect ratio validation
- aspect ratio support for 64:27 and 256:135
- drop unused control node code.
i915:
- Icelake (ICL) enabling
- GuC/HuC refactoring
- PSR/PSR2 enabling and fixes
- DPLL management refactoring
- DP MST fixes
- NV12 enabling
- HDCP improvements
- GEM/Execlist/reset improvements
- GVT improvements
- stolen memory first 4k fix
amdgpu:
- Vega 20 support
- VEGAM support (Kabylake-G)
- preOS scanout buffer reservation
- power management gfxoff support for raven
- SR-IOV fixes
- Vega10 power profiles and clock voltage control
- scatter/gather display support on CZ/ST
amdkfd:
- GFX9 dGPU support
- userptr memory mapping
nouveau:
- major refactoring for Volta GV100 support
tda998x:
- HDMI i2c CEC support
etnaviv:
- removed unused logging code
- license text cleanups
- MMU handling improvements
- timeout fence fix for 50 days uptime
tegra:
- IOMMU support in gr2d/gr3d drivers
- zpos support
vc4:
- syncobj support
- CTM, plane alpha and async cursor support
analogix_dp:
- HPD and aux chan fixes
sun4i:
- MIPI DSI support
tilcdc:
- clock divider fixes for OMAP-l138 LCDK board
rcar-du:
- R8A77965 support
- dma-buf fences fixes
- hardware indexed crtc/du group handling
- generic zplane property support
atmel-hclcdc:
- generic zplane property support
mediatek:
- use generic video mode function
exynos:
- S5PV210 FIMD variant support
- IPP v2 framework
- more HW overlays support"
* tag 'drm-next-2018-06-06-1' of git://anongit.freedesktop.org/drm/drm: (1286 commits)
drm/amdgpu: fix 32-bit build warning
drm/exynos: fimc: signedness bug in fimc_setup_clocks()
drm/exynos: scaler: fix static checker warning
drm/amdgpu: Use dev_info() to report amdkfd is not supported for this ASIC
drm/amd/display: Remove use of division operator for long longs
drm/amdgpu: Update GFX info structure to match what vega20 used
drm/amdgpu/pp: remove duplicate assignment
drm/sched: add rcu_barrier after entity fini
drm/amdgpu: move VM BOs on LRU again
drm/amdgpu: consistenly use VM moved flag
drm/amdgpu: kmap PDs/PTs in amdgpu_vm_update_directories
drm/amdgpu: further optimize amdgpu_vm_handle_moved
drm/amdgpu: cleanup amdgpu_vm_validate_pt_bos v2
drm/amdgpu: rework VM state machine lock handling v2
drm/amdgpu: Add runtime VCN PG support
drm/amdgpu: Enable VCN static PG by default on RV
drm/amdgpu: Add VCN static PG support on RV
drm/amdgpu: Enable VCN CG by default on RV
drm/amdgpu: Add static CG control for VCN on RV
drm/exynos: Fix default value for zpos plane property
...
Variants of proc_create{,_data} that directly take a seq_file show
callback and drastically reduces the boilerplate code in the callers.
All trivial callers converted over.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Variants of proc_create{,_data} that directly take a struct seq_operations
argument and drastically reduces the boilerplate code in the callers.
All trivial callers converted over.
Signed-off-by: Christoph Hellwig <hch@lst.de>
"unknown" lcd_types[] entry is needed for proper operation of
the driver, add it back.
Fixes: 6d09dfe70f ("video: fbdev: pxafb: Convert to use match_string() helper")
Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Trivial fix to spelling mistake in module parameter description text.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Trivial fix to spelling mistake in error messages.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Markus Elfring <elfring@users.sourceforge.net>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The new helper returns index of the matching string in an array.
We are going to use it here.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This patch allows viafb driver to be build on !X86 archs
using COMPILE_TEST config option.
Since via-camera driver (VIDEO_VIA_CAMERA) depends on viafb
it also needs a little fixup.
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
auo_k1900fb and auo_k1901fb drivers have been introduced six
years ago by following commits:
commit 2c8304d312 ("video: auo_k190x: add code shared by controller drivers")
commit 96b1d500e0 ("video: auo_k190x: add driver for AUO-K1900 variant")
commit 53027cdf2a ("video: auo_k190x: add driver for AUO-K1901 variant")
They never had any in-kernel user so just remove them (since
they are platform drivers they need corresponding platform
devices to be registered by kernel and it has never happened).
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
AVI infoframe can only carry none, 4:3, or 16:9 picture aspect
ratios. Return an error if the user asked for something different.
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: "Lin, Jia" <lin.a.jia@intel.com>
Cc: Akashdeep Sharma <akashdeep.sharma@intel.com>
Cc: Jim Bride <jim.bride@linux.intel.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: linux-media@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-6-git-send-email-ankit.k.nautiyal@intel.com
Commit 7378f11498 ("media: omap2: omapfb: allow building it with
COMPILE_TEST") broke compilation without CONFIG_OF selected.
CC drivers/video/fbdev/core/fbmem.o
drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.c: In function ‘omapdss_update_prop’:
drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.c:68:2: error: implicit declaration of function ‘of_update_property’; did you mean ‘of_get_property’? [-Werror=implicit-function-declaration]
of_update_property(node, prop);
^~~~~~~~~~~~~~~~~~
of_get_property
cc1: some warnings being treated as errors
scripts/Makefile.build:312: recipe for target 'drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.o' failed
make[7]: *** [drivers/video/fbdev/omap2/omapfb/dss/omapdss-boot-init.o] Error 1
scripts/Makefile.build:559: recipe for target 'drivers/video/fbdev/omap2/omapfb/dss' failed
make[6]: *** [drivers/video/fbdev/omap2/omapfb/dss] Error 2
make[6]: *** Waiting for unfinished jobs....
Add OF dependency in order to make all configurations work again.
of_update_property() has no inline stub, and that that could be added as
an alternative.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Leaking driver internal tracking into the already massively confusing
backlight power tracking is really confusing.
Stop that by allocating a tiny driver private data structure instead.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Nothing in the entire tree ever sets this, which means this is dead
code. Remove it.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This patch adds a LCD driver supporting the OTM3225A LCD SoC
from ORISE Technology. This device can drive TFT LC panels having a
resolution of 240x320 pixels. After initializing the OTM3225A using
it's SPI interface it switches to use 16-bib RGB as external
display interface.
Signed-off-by: Felix Brack <fb@ltec.ch>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
The documentation was wrong, gpiod_get_direction() returns 0/1 instead
of the GPIOF_* flags. The docs were fixed with commit 94fc73094a
("gpio: correct docs about return value of gpiod_get_direction"). Now,
fix this user (until a better, system-wide solution is in place).
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Some panels (i.e. N116BGE-L41), in their power sequence specifications,
request a delay between set the PWM signal and enable the backlight and
between clear the PWM signal and disable the backlight. Add support for
the new post-pwm-on-delay-ms and pwm-off-delay-ms proprieties to meet
the timings.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Before this patch the enable signal was set before the PWM signal and
vice-versa on power off. This sequence is wrong, at least, it is on
the different panels datasheets that I checked, so I inverted the sequence
to follow the specs.
For reference the following panels have the mentioned sequence:
- N133HSE-EA1 (Innolux)
- N116BGE (Innolux)
- N156BGE-L21 (Innolux)
- B101EAN0 (Auo)
- B101AW03 (Auo)
- LTN101NT05 (Samsung)
- CLAA101WA01A (Chunghwa)
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This driver provides access to RAVE SP backlight control
functionality.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Bhumika Goyal <bhumirks@gmail.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in these functions.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in these functions.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Arvind Yadav <arvind.yadav.cs@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Kees Cook <keescook@chromium.org>
Cc: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Since commit a521422ea4 ("ARM: shmobile: mackerel: Remove Legacy C
board code"), the only remaining platforms using this driver are SuperH
SH-Mobile SoCs (sh7723). As both SUPERH and ARCH_SHMOBILE are set for
these platforms, the SUPERH dependency can be dropped.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
We should get drvdata from struct device directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
We should get drvdata from struct device directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Use new return type vm_fault_t for fault handler
and page_mkwrite handler.
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
radeonfb_pci_suspend() is never called in atomic context.
radeonfb_pci_suspend() is only set as ".suspend" in struct pci_driver.
This function is not called in atomic context.
Despite never getting called from atomic context, radeonfb_pci_suspend()
calls mdelay() to busily wait.
This is not necessary and can be replaced with msleep()
and usleep_range() to avoid busy waiting.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
aty128_set_suspend() is never called in atomic context.
The call chains ending up at aty128_set_suspend() are:
[1] aty128_set_suspend() <- aty128_pci_suspend()
[2] aty128_set_suspend() <- aty128_do_resume() <- aty128_pci_resume()
[3] aty128_set_suspend() <- aty128_do_resume() <- aty128_early_resume()
aty128_pci_suspend() is set as ".suspend" in struct pci_driver.
aty128_pci_resume() is set as ".resume" in struct pci_driver.
aty128_early_resume() is never called.
These functions are not called in atomic context.
Despite never getting called from atomic context, aty128_set_suspend()
calls mdelay() to busily wait.
This is not necessary and can be replaced with msleep() to
avoid busy waiting.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
savage_init_hw() is never called in atomic context.
The call chains ending up at savage_init_hw() are:
[1] savage_init_hw() <- savagefb_probe()
[2] savage_init_hw() <- savagefb_resume()
savagefb_probe() is only set as ".probe" in struct pci_driver.
savagefb_resume) is only set as ".resume" in struct pci_driver.
These functions are not called in atomic context.
Despite never getting called from atomic context, savage_init_hw()
calls mdelay() to busily wait.
This is not necessary and can be replaced with usleep_range to
avoid busy waiting.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
This driver builds cleanly with COMPILE_TEST, and it is
needed in order to allow building drivers/media omap2
driver.
So, change the logic there to allow building it.
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
- make it possible to load radeonfb driver when offb driver is loaded first
(Mathieu Malaterre)
- fix memory leak in offb driver (Mathieu Malaterre)
- fix unaligned access in udlfb driver (Ladislav Michl)
- convert atmel_lcdfb driver to use GPIO descriptors (Ludovic Desroches)
- avoid mismatched prototypes in sisfb driver (Arnd Bergmann)
- remove VLA usage from viafb driver (Gustavo A. R. Silva)
- add missing help text to FB_I810_I2 config option (Ulf Magnusson)
- misc fixes (Gustavo A. R. Silva, Colin Ian King, Markus Elfring)
- remove dead code from s3c-fb driver for Exynos and S5PV210 platforms
- misc cleanups (Corentin Labbe, Ladislav Michl, Ulf Magnusson, Vladimir
Zapolskiy, Markus Elfring)
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Merge tag 'fbdev-v4.17' of git://github.com/bzolnier/linux
Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"There is nothing really major here, just a couple of small bugfixes,
improvements and cleanups:
- make it possible to load radeonfb driver when offb driver is loaded
first (Mathieu Malaterre)
- fix memory leak in offb driver (Mathieu Malaterre)
- fix unaligned access in udlfb driver (Ladislav Michl)
- convert atmel_lcdfb driver to use GPIO descriptors (Ludovic
Desroches)
- avoid mismatched prototypes in sisfb driver (Arnd Bergmann)
- remove VLA usage from viafb driver (Gustavo A. R. Silva)
- add missing help text to FB_I810_I2 config option (Ulf Magnusson)
- misc fixes (Gustavo A. R. Silva, Colin Ian King, Markus Elfring)
- remove dead code from s3c-fb driver for Exynos and S5PV210
platforms
- misc cleanups (Corentin Labbe, Ladislav Michl, Ulf Magnusson,
Vladimir Zapolskiy, Markus Elfring)"
* tag 'fbdev-v4.17' of git://github.com/bzolnier/linux: (32 commits)
video: fbdev: s3c-fb: remove dead platform code for Exynos and S5PV210 platforms
video: au1100fb: Delete an unnecessary variable initialisation in au1100fb_drv_probe()
video: au1100fb: Improve a size determination in au1100fb_drv_probe()
video: au1100fb: Delete an error message for a failed memory allocation in au1100fb_drv_probe()
video/console/sticore: Delete an error message for a failed memory allocation in sti_try_rom_generic()
video: ARM CLCD: Improve a size determination in clcdfb_probe()
video: ARM CLCD: Delete an error message for a failed memory allocation in clcdfb_probe()
video: matroxfb: Delete an error message for a failed memory allocation in matroxfb_crtc2_probe()
video: s3c-fb: Improve a size determination in s3c_fb_probe()
video: s3c-fb: Delete an error message for a failed memory allocation in s3c_fb_probe()
video: fsl-diu-fb: Delete an error message for a failed memory allocation in fsl_diu_init()
video: ssd1307fb: Improve a size determination in ssd1307fb_probe()
video: smscufx: Delete an error message for a failed memory allocation in ufx_realloc_framebuffer()
video: smscufx: Return an error code only as a constant in ufx_realloc_framebuffer()
video: smscufx: Less checks in ufx_usb_probe() after error detection
video: udlfb: Return an error code only as a constant in dlfb_realloc_framebuffer()
video/fbdev/stifb: Delete an error message for a failed memory allocation in stifb_init_fb()
video/fbdev/stifb: Return -ENOMEM after a failed kzalloc() in stifb_init_fb()
video: fbdev: aty128fb: use true and false for boolean values
fbdev: aty: fix missing indentation in if statement
...
Pull s390 updates from Martin Schwidefsky:
- Improvements for the spectre defense:
* The spectre related code is consolidated to a single file
nospec-branch.c
* Automatic enable/disable for the spectre v2 defenses (expoline vs.
nobp)
* Syslog messages for specve v2 are added
* Enable CONFIG_GENERIC_CPU_VULNERABILITIES and define the attribute
functions for spectre v1 and v2
- Add helper macros for assembler alternatives and use them to shorten
the code in entry.S.
- Add support for persistent configuration data via the SCLP Store Data
interface. The H/W interface requires a page table that uses 4K pages
only, the code to setup such an address space is added as well.
- Enable virtio GPU emulation in QEMU. To do this the depends
statements for a few common Kconfig options are modified.
- Add support for format-3 channel path descriptors and add a binary
sysfs interface to export the associated utility strings.
- Add a sysfs attribute to control the IFCC handling in case of
constant channel errors.
- The vfio-ccw changes from Cornelia.
- Bug fixes and cleanups.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (40 commits)
s390/kvm: improve stack frame constants in entry.S
s390/lpp: use assembler alternatives for the LPP instruction
s390/entry.S: use assembler alternatives
s390: add assembler macros for CPU alternatives
s390: add sysfs attributes for spectre
s390: report spectre mitigation via syslog
s390: add automatic detection of the spectre defense
s390: move nobp parameter functions to nospec-branch.c
s390/cio: add util_string sysfs attribute
s390/chsc: query utility strings via fmt3 channel path descriptor
s390/cio: rename struct channel_path_desc
s390/cio: fix unbind of io_subchannel_driver
s390/qdio: split up CCQ handling for EQBS / SQBS
s390/qdio: don't retry EQBS after CCQ 96
s390/qdio: restrict buffer merging to eligible devices
s390/qdio: don't merge ERROR output buffers
s390/qdio: simplify math in get_*_buffer_frontier()
s390/decompressor: trim uncompressed image head during the build
s390/crypto: Fix kernel crash on aes_s390 module remove.
s390/defkeymap: fix global init to zero
...
Here is the big set of tty and serial driver patches for 4.17-rc1
Not all that big really, most are just small fixes and additions to
existing drivers. There's a bunch of work on the imx serial driver
recently for some reason, and a new embedded serial driver added as
well.
Full details are in the shortlog.
All of these have been in the linux-next tree for a while with no
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the big set of tty and serial driver patches for 4.17-rc1
Not all that big really, most are just small fixes and additions to
existing drivers. There's a bunch of work on the imx serial driver
recently for some reason, and a new embedded serial driver added as
well.
Full details are in the shortlog.
All of these have been in the linux-next tree for a while with no
reported issues"
* tag 'tty-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (66 commits)
serial: expose buf_overrun count through proc interface
serial: mvebu-uart: fix tx lost characters
tty: serial: msm_geni_serial: Fix return value check in qcom_geni_serial_probe()
tty: serial: msm_geni_serial: Add serial driver support for GENI based QUP
8250-men-mcb: add support for 16z025 and 16z057
powerpc: Mark the variable earlycon_acpi_spcr_enable maybe_unused
serial: stm32: fix initialization of RS485 mode
ARM: dts: STi: Remove "console=ttyASN" from bootargs for STi boards
vt: change SGR 21 to follow the standards
serdev: Fix typo in serdev_device_alloc
ARM: dts: STi: Fix aliases property name for STi boards
tty: st-asc: Update tty alias
serial: stm32: add support for RS485 hardware control mode
dt-bindings: serial: stm32: add RS485 optional properties
selftests: add devpts selftests
devpts: comment devpts_mntget()
devpts: resolve devpts bind-mounts
devpts: hoist out check for DEVPTS_SUPER_MAGIC
serial: 8250: Add Nuvoton NPCM UART
serial: mxs-auart: disable clks of Alphascale ASM9260
...
Pull parisc updates from Helge Deller:
"Lots of small enhancements and fixes in this patchset:
- improved the x86-64 compatibility for PCI cards by returning -1UL
for timed out MMIO transactions (instead of crashing)
- fixed HPMC handler for PAT machines: size needs to be multiple of 16
- prepare machine_power_off() to be able to turn rp3410 and c8000
machines off via IMPI
- added code to extract machine info for usage with qemu
- some init sections fixes
- lots of fixes for sparse-, ubsan- and uninitalized variables
warnings"
* 'parisc-4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix out of array access in match_pci_device()
parisc: Add code generator for Qemu/SeaBIOS machine info
parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode
parisc: Fix HPMC handler by increasing size to multiple of 16 bytes
parisc: Directly call machine_power_off() in power button driver
parisc: machine_power_off() should call pm_power_off()
parisc/Kconfig: SMP kernels boot on all machines
parisc: Silence uninitialized variable warning in dbl_to_sgl_fcnvff()
parisc: Move various functions and strings to init section
parisc: Convert MAP_TYPE to cover 4 bits on parisc
parisc: Force to various endian types for sparse
parisc/gscps2: Fix sparse warnings
parisc/led: Fix sparse warnings
parisc/parport_gsc: Use NULL to avoid sparse warning
parisc/stifb: Use fb_memset() to avoid sparse warning
This removes the entire architecture code for blackfin, cris, frv, m32r,
metag, mn10300, score, and tile, including the associated device drivers.
I have been working with the (former) maintainers for each one to ensure
that my interpretation was right and the code is definitely unused in
mainline kernels. Many had fond memories of working on the respective
ports to start with and getting them included in upstream, but also saw
no point in keeping the port alive without any users.
In the end, it seems that while the eight architectures are extremely
different, they all suffered the same fate: There was one company
in charge of an SoC line, a CPU microarchitecture and a software
ecosystem, which was more costly than licensing newer off-the-shelf
CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems
that all the SoC product lines are still around, but have not used the
custom CPU architectures for several years at this point. In contrast,
CPU instruction sets that remain popular and have actively maintained
kernel ports tend to all be used across multiple licensees.
The removal came out of a discussion that is now documented at
https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
marking any ports as deprecated but remove them all at once after I made
sure that they are all unused. Some architectures (notably tile, mn10300,
and blackfin) are still being shipped in products with old kernels,
but those products will never be updated to newer kernel releases.
After this series, we still have a few architectures without mainline
gcc support:
- unicore32 and hexagon both have very outdated gcc releases, but the
maintainers promised to work on providing something newer. At least
in case of hexagon, this will only be llvm, not gcc.
- openrisc, risc-v and nds32 are still in the process of finishing their
support or getting it added to mainline gcc in the first place.
They all have patched gcc-7.3 ports that work to some degree, but
complete upstream support won't happen before gcc-8.1. Csky posted
their first kernel patch set last week, their situation will be similar.
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Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pul removal of obsolete architecture ports from Arnd Bergmann:
"This removes the entire architecture code for blackfin, cris, frv,
m32r, metag, mn10300, score, and tile, including the associated device
drivers.
I have been working with the (former) maintainers for each one to
ensure that my interpretation was right and the code is definitely
unused in mainline kernels. Many had fond memories of working on the
respective ports to start with and getting them included in upstream,
but also saw no point in keeping the port alive without any users.
In the end, it seems that while the eight architectures are extremely
different, they all suffered the same fate: There was one company in
charge of an SoC line, a CPU microarchitecture and a software
ecosystem, which was more costly than licensing newer off-the-shelf
CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
seems that all the SoC product lines are still around, but have not
used the custom CPU architectures for several years at this point. In
contrast, CPU instruction sets that remain popular and have actively
maintained kernel ports tend to all be used across multiple licensees.
[ See the new nds32 port merged in the previous commit for the next
generation of "one company in charge of an SoC line, a CPU
microarchitecture and a software ecosystem" - Linus ]
The removal came out of a discussion that is now documented at
https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
marking any ports as deprecated but remove them all at once after I
made sure that they are all unused. Some architectures (notably tile,
mn10300, and blackfin) are still being shipped in products with old
kernels, but those products will never be updated to newer kernel
releases.
After this series, we still have a few architectures without mainline
gcc support:
- unicore32 and hexagon both have very outdated gcc releases, but the
maintainers promised to work on providing something newer. At least
in case of hexagon, this will only be llvm, not gcc.
- openrisc, risc-v and nds32 are still in the process of finishing
their support or getting it added to mainline gcc in the first
place. They all have patched gcc-7.3 ports that work to some
degree, but complete upstream support won't happen before gcc-8.1.
Csky posted their first kernel patch set last week, their situation
will be similar
[ Palmer Dabbelt points out that RISC-V support is in mainline gcc
since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]"
This really says it all:
2498 files changed, 95 insertions(+), 467668 deletions(-)
* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
MAINTAINERS: UNICORE32: Change email account
staging: iio: remove iio-trig-bfin-timer driver
tty: hvc: remove tile driver
tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
serial: remove tile uart driver
serial: remove m32r_sio driver
serial: remove blackfin drivers
serial: remove cris/etrax uart drivers
usb: Remove Blackfin references in USB support
usb: isp1362: remove blackfin arch glue
usb: musb: remove blackfin port
usb: host: remove tilegx platform glue
pwm: remove pwm-bfin driver
i2c: remove bfin-twi driver
spi: remove blackfin related host drivers
watchdog: remove bfin_wdt driver
can: remove bfin_can driver
mmc: remove bfin_sdh driver
input: misc: remove blackfin rotary driver
input: keyboard: remove bf54x driver
...
driver and timer driver), which has been through 7 rounds of review on mailing
list.
It is able to boot to shell and passes most LTP-2017 testsuites in nds32 AE3XX
platform.
Total Tests: 1901
Total Skipped Tests: 618
Total Failures: 78
Copied below is the ChangeLog that contains the history of this patch set:
Changes in v7:
- Update cpu binding document to add "andestech,nds32v3" as fallback
- Remove unnecessary configs of arch/nds32/Kconfig
- Use GENERIC_CALIBRATE_DELAY
- Add more help texts for minimum CPU type config
- Update defconfig because of Kconfig changed and bug fixed
- Move early_trap_init() declaration to nds32.h
- Refine dma.c
- Remove apply_relocate() in module.c and include <linux/moduleloader.h> to catch it
- Add do_kernel_restart() in machine_restart()
- Clean up setup.c to remove CONFIG_VGA_CONSOLE and some extern declaration functions
- Add negative dependency for VGA_CONSOLE on nds32
- Refine ptrace.c and arch/nds32/include/asm/ptrace.h
- Refine syscall restart flow and arch/nds32/kernel/signal.c
- Fix a bug in VDSO
- Remove the handling for kernel code unaligned accessing
- Add a description for unaligned access handling in git commit message.
- Rebase to v4.16-rc1
- Replace ACCESS_ONCE with READ_ONCE
- Replace atomic_long_dec(&mm->nr_ptes) with mm_dec_nr_ptes(mm)
- Remove print_symbol(%s) with printk(%pS)
- Add bpf_perf_event.h
- Remove init_stack and init_thread_info
Changes in v6:
- Refine naming for atl2c
- Refine ae3xx.dts
- Remove CONFIG_TIMER_ATCPIT100 in defconfig
- Refine elf.h
- Fix a vdso bug
- Separate arch patchset and timer patchset
- To select TIMER_OF in drivers/clocksource/Kconfig instead of arch/nds32/Kconfig
Changes in v5:
- Remove __NR__llseek and sys_mmap()
- Add a comment to explain that we don't have clocksource cycle counter in the CPU
- Add volatile in iounmap()
- Fix typo Featuretures to Features
- Replace CPU_CACHE_NONALIASING with !CPU_CACHE_ALIASING
- Fix a endian bug when we try to get val = of_get_property(cpu,"clock-frequency", NULL)
- Add screen_info to fix the building error when CONFIG_ VGA_CONSOLE is enabled
- Remove unnecessary msync()
- Add depends on !64BIT || BROKEN for faraday Kconfig because the descriptor only supports 32bit
- Add atl2c binding document
- Remove unnecessary include headers
- Fix a vector table bug. It placed wrong vector handlers for 2 exceptions.
- Fix a vdso bug. It may encounter TLB multi-hit exception because we accidently set it as a global page.
- Add proper isb and barrier after some cache operations
- Fix a bug in system call restart flow. $r0 ~ $r5 does not be recovered before restarting system call
- Fix the build errors for OpenRISC and SPARC because io.h changed.
- Update ae3xx.dts to support atl2c.
Changes in v4:
- Add atcpit100 timer driver due to it include vdso implementations and sent
them together with nds32 may help reviewer to review.
- Update ae3xx.dts for atcpit100 clock setting and remove vdso settings.
- To get cycle counter register by timer driver instead of dts.
- Use "depends on NDS32 || COMPILE_TEST" in atcpit100 driver because it is needed for nds32 vdso
- Update defconfig becasue kconfig rename from CONFIG_CLKSRC_ATCPIT100 to CONFIG_TIMER_ATCPIT100
- Remove ag101p.dts because we are not yet ready for ag101p platform.
- Update copyright style to SPDX-License-Identifier
- Include <linux/uaccess.h> instead of <asm/uaccess.h>
- Add local_irq_save()/local_irq_restore() to protect SR_TLB_VPN in update_mmu_cache().
- Update cpu_dcache_inval_all implementation to make sure all level cache are writeback.
Changes in v3:
- Use arch's io.h instead of generic one
- Add andestech-boards binding document
- Update nds32/cpus.txt binding document
- Remove atcpit100 timer drivers
- Select NO_BOOTMEM and delete HAVE_MEMBLOCK_NODE_MAP
- make CPU_BIG_ENDIAN and CPU_LITTLE_ENDIAN are dependent
- Add cpu type to select HWZOL/CPU_CACHE_ALIASING
- Change CPU_CACHE_NONALIASING to CPU_CACHE_ALIASING
- Remove bootarg from device tree script
- Update ag101p.dts and ae3xx.dts for correct board name.
- Clear and simplify defconfig
- Implement L2C_R_REG/ L2C_W_REG with readl/writel instead of __raw_readl/__raw_writel for endian save
- Remove early_init_dt_add_memory_arch/early_init_dt_alloc_memory_arch to use the generic ones
- Refine devicetree.c
- Fix bug https://lkml.kernel.org/r/1499782590-31366-1-git-send-ema...
- Refine irqchip/irq-ativic32.c implementations
- Add COMPILE_TEST in drivers/net/ethernet/faraday/Kconfig
- Refine cache operations
- Add CONFIG_HW_SUPPORT_UNALIGNMENT_ACCESS
- Fix ZERO_PAGE define
- Remove SA_RESTORER
- Remove uapi/asm/signal.h
- Redefine user_pt_regs
- Remove spinlock.h
- Remove __ARCH_WANT_RENAMEAT and __ARCH_WANT_SYSCALL_OFF_T from unistd.h
- Remove set_fs(USER_DS) because flush_old_exec() will do this setting
- Replace in_atomic() with faulthandler_disabled()
- Add barrier.h
- Select COMMON_CLK
- Add clk_pll in dts
- Add of_clk_init() in arch/nds32/kernel/time.c
Changes in v2:
- Set GENERIC_CALIBRATE_DELAY default n
- Add earlycon support
- Remove earlyprintk
- Add CPU_BIG_ENDIAN, CPU_LITTLE_ENDIAN support
- Refine unalignment access exception handler
- Add VMSPLIT support
- Use only one defconfig
- Change interrupt-cells from 2 to 1
- Refine andestech cpu names in bindings/nds32/cpus.txt
- Get clock frequency in dts because fpga bitmap doesn't include this feature
- Update MAINTAINERS for bindings
- Remove unused configs in Kconfig
- Refine device tree scripts
- Refine coding style
- Use generic ioremap_nocache
- Remove L2CC_PA_BASE define and its codes in head.S. It will be moved to bootloader.
- Set PHYS_OFFSET to 0x0 instead of CONFIG_MEMORY_START
- Remove unused macros
- Simplify cpu_cache_* API
- Change __asm__ __volatile__ to asm volatile
- Refine uaccess.h
- Remove unused/deprecated syscall
- Use generic posix_types.h
- Remove arch_trace_hardirqs_on/arch_trace_hardirqs_off
- Fix bug of restart syscall
- Refine syscall implementations
- Use IS_ENABLED to replace ifdef as possible
- Remove device_initcall(nds32_device_probe)
- Refine vdso implementations
- Refine copy_from_user()/copy_to_user()/clear_user()/get_user()/memmove()/memcpy()
- Refine ioremap.c
- Refine irq-ativic32.c
- Fix a bug of earlycon.c
- Export ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt
- Add atcpit100 driver
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Merge tag 'nds32-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux
Pull nds32 architecture support from Greentime Hu:
"This contains the core nds32 Linux port (including interrupt
controller driver and timer driver), which has been through seven
rounds of review on mailing list.
It is able to boot to shell and passes most LTP-2017 testsuites in
nds32 AE3XX platform:
Total Tests: 1901
Total Skipped Tests: 618
Total Failures: 78"
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
* tag 'nds32-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux: (44 commits)
nds32: To use the generic dump_stack()
nds32: fix building failed if using elf toolchain.
nios2: add ioremap_nocache declaration before include asm-generic/io.h.
nds32: fix building failed if using older version gcc.
dt-bindings: timer: Add andestech atcpit100 timer binding doc
clocksource/drivers/atcpit100: VDSO support
clocksource/drivers/atcpit100: Add andestech atcpit100 timer
net: faraday add nds32 support.
irqchip: Andestech Internal Vector Interrupt Controller driver
dt-bindings: interrupt-controller: Andestech Internal Vector Interrupt Controller
dt-bindings: nds32 SoC Bindings
dt-bindings: nds32 L2 cache controller Bindings
dt-bindings: nds32 CPU Bindings
MAINTAINERS: Add nds32
nds32: Build infrastructure
nds32: defconfig
nds32: Miscellaneous header files
nds32: Device tree support
nds32: Generic timers support
nds32: Loadable modules
...
Exynos5, Exynos4 and S5PV210 platforms have been converted to
use Device Tree and Exynos DRM driver long time ago. Remove
dead platform code for these platforms and update Kconfig
s3c-fb entry accordingly.
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The local variable "fbdev" will be reassigned by a following statement.
Thus omit the explicit initialisation at the beginning.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E. J. Bottomley" <jejb@parisc-linux.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Timur Tabi <timur@tabi.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Bastian Stender <bst@pengutronix.de>
Cc: Jyri Sarha <jsarha@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
* Return an error code without storing it in an intermediate variable.
* Delete the label "error" and local variable "retval"
which became unnecessary with this refactoring.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Up to four checks could be repeated by the ufx_usb_probe() function
during error handling even if the relevant properties can be determined
for the involved variables before by source code analysis.
* Return directly after a call of the function "kzalloc" failed
at the beginning.
* Adjust jump targets so that extra checks can be omitted at the end.
* Delete initialisations for the variables "info" and "retval"
which became unnecessary with this refactoring.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
* Return an error code without storing it in an intermediate variable.
* Delete the label "error" and local variable "retval"
which became unnecessary with this refactoring.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E. J. Bottomley" <jejb@parisc-linux.org>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Replace an error code for the indication of a memory allocation failure
in this function.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2: Initial git repository build")
Suggested-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E. J. Bottomley" <jejb@parisc-linux.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Assign true or false to boolean variables instead of an integer value.
This issue was detected with the help of Coccinelle.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
There is a missing indentation following an if statement, fix this.
Detected by Coccinelle:
drivers/video/fbdev/aty/mach64_ct.c:183:2-15: code aligned with
following code on line 184
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
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Backmerge tag 'v4.16-rc7' into drm-next
Linux 4.16-rc7
This was requested by Daniel, and things were getting
a bit hard to reconcile, most of the conflicts were
trivial though.
The m32r architecture is being removed, so this is no longer needed.
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The blackfin and m32r architectures are getting removed, so it's
time to clean up the logos as well.
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
A lot of Kconfig symbols have architecture specific dependencies.
In those cases that depend on architectures we have already removed,
they can be omitted.
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The S390 architecture does not support any graphics hardware,
but with the latest support for Virtio GPU in Linux and Virtio
GPU emulation in QEMU, it's possible to enable graphics for
S390 using the Virtio GPU device.
To enable display we need to enable the Linux Virtual Terminal (VT)
layer for S390. But the VT subsystem initializes quite early
at boot so we need a dummy console driver till the Virtio GPU
driver is initialized and we can run the framebuffer console.
The framebuffer console over a Virtio GPU device can be run
in combination with the serial SCLP console (default on S390).
The SCLP console can still be accessed by management applications
(eg: via Libvirt's virsh console).
Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <e23b61f4f599ba23881727a1e8880e9d60cc6a48.1519315352.git.alifm@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The 'commit e25df1205f ("[S390] Kconfig: menus with depends on HAS_IOMEM.")'
added the HAS_IOMEM dependecy for "Graphics support". This disabled the
"Graphics support" menu for S390. But if we enable VT layer for S390,
we would also need to enable the dummy console. So let's remove the
HAS_IOMEM dependency.
Move this dependency to sub menu items and console drivers that use
io memory.
Signed-off-by: Farhan Ali <alifm@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <6e8ef238162df5be4462126be155975c722e9863.1519315352.git.alifm@linux.vnet.ibm.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
In preparation to enabling -Wvla, remove VLA usage.
Also, fixed as part of the directive to remove all VLAs from
the kernel: https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cast _pitch_ to u64 in order to give the compiler complete information
about the proper arithmetic to use. Notice that this variable is
being used in a context that expects an expression of type u64
(64 bits, unsigned).
The expression pitch * var->yres_virtual is currently being evaluated
using 32-bit arithmetic and the result of the operation is being stored
into variable mem, which is a variable of type u64. Based on that,
chances are there is a potential integer overflow as a result of the
operation.
Addresses-Coverity-ID: 200655 ("Unintentional integer overflow")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Since introduction of of_display_timings_exist() function in commit
cc3f414cf2 ("video: add of helper for display timings/videomode") it
didn't attract any users, and the function has no potential, because
of_get_display_timings() covers its functionality and does more.
Drop the unused exported function from the kernel.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
When the linux kernel is build with (typical kernel ship with Debian
installer):
CONFIG_FB=y
CONFIG_FB_OF=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_FB_RADEON=m
The offb driver takes precedence over module radeonfb. It is then
impossible to load the module, error reported is:
[ 96.551486] radeonfb 0000:00:10.0: enabling device (0006 -> 0007)
[ 96.551526] radeonfb 0000:00:10.0: BAR 0: can't reserve [mem 0x98000000-0x9fffffff pref]
[ 96.551531] radeonfb (0000:00:10.0): cannot request region 0.
[ 96.551545] radeonfb: probe of 0000:00:10.0 failed with error -16
This patch reproduce the behavior of the module radeon, so as to make it
possible to load radeonfb when offb is first loaded, see
commit a56f7428d7 ("drm/radeon: Add early unregister of firmware fb's").
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Link: https://bugs.debian.org/826629#57
Link: https://bugzilla.kernel.org/show_bug.cgi?id=119741
Suggested-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The FB_I810_I2C symbol previously had a blank help text, which was
removed in e9829ac4e5 ("video: fbdev: kconfig: Remove blank help
text").
Give it a proper help text, derived from commit 74f6ae84b2 ("[PATCH]
i810fb: Add > i2c/DDC support").
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: "Luis R . Rodriguez" <mcgrof@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Hans de Goede <j.w.r.degoede@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The AVR32 symbol was removed in commit 26202873bb ("avr32: remove
support for AVR32 architecture").
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Corentin Labbe <clabbe.montjoie@gmail.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: LEROY Christophe <christophe.leroy@c-s.fr>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Driver generates lots of alignment trap exceptions on ARM.
Fix that by replacing typecasting of odd addresses with
byte shifting and remove uneccessary typecasting.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Cc: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Use GPIO descriptors instead of relying on the old method.
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Building with LTO enabled reveals some functions whose prototypes
in the header are different from the definition:
drivers/video/fbdev/sis/sis_main.h:765:0: error: type of 'SiS_SetCH70xxANDOR' does not match original declaration [-Werror=lto-type-mismatch]
extern void SiS_SetCH70xxANDOR(struct SiS_Private *SiS_Pr, unsigned short reg,
drivers/video/fbdev/sis/init301.c:8937:0: note: type mismatch in parameter 4
SiS_SetCH70xxANDOR(struct SiS_Private *SiS_Pr, unsigned short reg,
drivers/video/fbdev/sis/init301.c:8937:0: note: type 'short unsigned int' should match type 'unsigned char'
drivers/video/fbdev/sis/init301.c:8937:0: note: 'SiS_SetCH70xxANDOR' was previously declared here
The root cause appears to be the way that header files are used in this
driver, where they contain both static variable and declarations for
symbols in other files.
To clean that up, I'm changing all mixed headers to only contain
declarations the way we normally do in C, or contain only static
variables, and move the rest to a more appropriate place. Once that
is done, the headers can be included in the other files as well, and
guarantee that the prototypes match.
There are a few headers that now only contain static variables, and
I'm leaving those alone here as the patch is already too big. These
could be trivially moved into the respective .c files.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: "Gustavo A. R. Silva" <gustavo@embeddedor.com>,
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
SH_LCD_MIPI_DSI is unused since commit 18b6562c24 ("fbdev: sh_mipi_dsi:
remove driver") so no need to keep it.
Fixes: 18b6562c24 ("fbdev: sh_mipi_dsi: remove driver")
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Fixing arbitrary kernel leak in case FBIOGETCMAP_SPARC in
sbusfb_ioctl_helper().
'index' is defined as an int in sbusfb_ioctl_helper().
We retrieve this from the user:
if (get_user(index, &c->index) ||
__get_user(count, &c->count) ||
__get_user(ured, &c->red) ||
__get_user(ugreen, &c->green) ||
__get_user(ublue, &c->blue))
return -EFAULT;
and then we use 'index' in the following way:
red = cmap->red[index + i] >> 8;
green = cmap->green[index + i] >> 8;
blue = cmap->blue[index + i] >> 8;
This is a classic information leak vulnerability. 'index' should be
an unsigned int, given its usage above.
This patch is straight-forward; it changes 'index' to unsigned int
in two switch-cases: FBIOGETCMAP_SPARC && FBIOPUTCMAP_SPARC.
This patch fixes CVE-2018-6412.
Signed-off-by: Peter Malone <peter.malone@gmail.com>
Acked-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Commit 4fe505119778 ("console: Expand dummy functions for CFI") accidentally
added "static" to newport_con instance of struct consw, while trying to
normalize the declarations. This, however, needed to stay non-static as it
has an extern.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 4fe505119778 ("console: Expand dummy functions for CFI")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This expands the no-op dummy functions into full prototypes to avoid
indirect call mismatches when running under Control Flow Integrity
checking, like with Clang's -fsanitize=cfi.
Co-Developed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
nds32 does not support VGA console, so prevent that kconfig symbol from
being enabled for nds32, thus fixing these build errors:
drivers/video/console/vgacon.o: In function `vgacon_save_screen':
/NOBACKUP/sqa2/greentime/contrib/src_pkg/linux-nds32/drivers/video/console/vgacon.c:1327:
undefined reference to `screen_info'
/NOBACKUP/sqa2/greentime/contrib/src_pkg/linux-nds32/drivers/video/console/vgacon.c:1327:
undefined reference to `screen_info'
/NOBACKUP/sqa2/greentime/contrib/src_pkg/linux-nds32/drivers/video/console/vgacon.c:1328:
undefined reference to `screen_info'
/NOBACKUP/sqa2/greentime/contrib/src_pkg/linux-nds32/drivers/video/console/vgacon.c:1328:
undefined reference to `screen_info'
drivers/video/console/vgacon.o: In function `vgacon_init':
/NOBACKUP/sqa2/greentime/contrib/src_pkg/linux-nds32/drivers/video/console/vgacon.c:591:
undefined reference to `screen_info'
drivers/video/console/vgacon.o:/NOBACKUP/sqa2/greentime/contrib/src_pkg/linux-nds32/drivers/video/console/vgacon.c:591:
more undefined references to `screen_info' follow
make: *** [vmlinux] Error 1
Signed-off-by: Greentime Hu <greentime@andestech.com>
migrate the backlight helpers from tinydrm to the backlight subsystem.
https://patchwork.freedesktop.org/series/36522/
Cc: Meghana Madhyastha <meghana.madhyastha@gmail.com>
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Merge tag 'topic/backlight_for_lag-2018-01-29' of git://anongit.freedesktop.org/drm/drm-misc into drm-misc-next
This contains the backlight portion of Meghana Madhyastha's patch set to
migrate the backlight helpers from tinydrm to the backlight subsystem.
https://patchwork.freedesktop.org/series/36522/
Cc: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
# gpg: Signature made Mon 29 Jan 2018 02:25:40 PM EST
# gpg: using RSA key 7F17297CC4A076740CB3E42A96F70DFDA84A070A
# gpg: Good signature from "Sean Paul <seanpaul@chromium.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 1C5E AB9E D7C9 DDE9 E7F2 087C 732C 0025 72DC AF79
# Subkey fingerprint: 7F17 297C C4A0 7674 0CB3 E42A 96F7 0DFD A84A 070A
Link: https://patchwork.freedesktop.org/patch/msgid/20180129192950.bvmhkz3h42t5a25r@art_vandelay
Pull x86 PTI and Spectre related fixes and updates from Ingo Molnar:
"Here's the latest set of Spectre and PTI related fixes and updates:
Spectre:
- Add entry code register clearing to reduce the Spectre attack
surface
- Update the Spectre microcode blacklist
- Inline the KVM Spectre helpers to get close to v4.14 performance
again.
- Fix indirect_branch_prediction_barrier()
- Fix/improve Spectre related kernel messages
- Fix array_index_nospec_mask() asm constraint
- KVM: fix two MSR handling bugs
PTI:
- Fix a paranoid entry PTI CR3 handling bug
- Fix comments
objtool:
- Fix paranoid_entry() frame pointer warning
- Annotate WARN()-related UD2 as reachable
- Various fixes
- Add Add Peter Zijlstra as objtool co-maintainer
Misc:
- Various x86 entry code self-test fixes
- Improve/simplify entry code stack frame generation and handling
after recent heavy-handed PTI and Spectre changes. (There's two
more WIP improvements expected here.)
- Type fix for cache entries
There's also some low risk non-fix changes I've included in this
branch to reduce backporting conflicts:
- rename a confusing x86_cpu field name
- de-obfuscate the naming of single-TLB flushing primitives"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
x86/entry/64: Fix CR3 restore in paranoid_exit()
x86/cpu: Change type of x86_cache_size variable to unsigned int
x86/spectre: Fix an error message
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
selftests/x86/mpx: Fix incorrect bounds with old _sigfault
x86/mm: Rename flush_tlb_single() and flush_tlb_one() to __flush_tlb_one_[user|kernel]()
x86/speculation: Add <asm/msr-index.h> dependency
nospec: Move array_index_nospec() parameter checking into separate macro
x86/speculation: Fix up array_index_nospec_mask() asm constraint
x86/debug: Use UD2 for WARN()
x86/debug, objtool: Annotate WARN()-related UD2 as reachable
objtool: Fix segfault in ignore_unreachable_insn()
selftests/x86: Disable tests requiring 32-bit support on pure 64-bit systems
selftests/x86: Do not rely on "int $0x80" in single_step_syscall.c
selftests/x86: Do not rely on "int $0x80" in test_mremap_vdso.c
selftests/x86: Fix build bug caused by the 5lvl test which has been moved to the VM directory
selftests/x86/pkeys: Remove unused functions
selftests/x86: Clean up and document sscanf() usage
selftests/x86: Fix vDSO selftest segfault for vsyscall=none
x86/entry/64: Remove the unused 'icebp' macro
...
x86_mask is a confusing name which is hard to associate with the
processor's stepping.
Additionally, correct an indent issue in lib/cpu.c.
Signed-off-by: Jia Zhang <qianyue.zj@alibaba-inc.com>
[ Updated it to more recent kernels. ]
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: tony.luck@intel.com
Link: http://lkml.kernel.org/r/1514771530-70829-1-git-send-email-qianyue.zj@alibaba-inc.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Makefile changes:
- enable unused-variable warning that was wrongly disabled for clang
Kconfig changes:
- warn blank 'help' and fix existing instances
- fix 'choice' behavior to not write out invisible symbols
- fix misc weirdness
Coccinell changes:
- fix false positive of free after managed memory alloc detection
- improve performance of NULL dereference detection
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Merge tag 'kbuild-v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
"Makefile changes:
- enable unused-variable warning that was wrongly disabled for clang
Kconfig changes:
- warn about blank 'help' and fix existing instances
- fix 'choice' behavior to not write out invisible symbols
- fix misc weirdness
Coccinell changes:
- fix false positive of free after managed memory alloc detection
- improve performance of NULL dereference detection"
* tag 'kbuild-v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (21 commits)
kconfig: remove const qualifier from sym_expand_string_value()
kconfig: add xrealloc() helper
kconfig: send error messages to stderr
kconfig: echo stdin to stdout if either is redirected
kconfig: remove check_stdin()
kconfig: remove 'config*' pattern from .gitignnore
kconfig: show '?' prompt even if no help text is available
kconfig: do not write choice values when their dependency becomes n
coccinelle: deref_null: avoid useless computation
coccinelle: devm_free: reduce false positives
kbuild: clang: disable unused variable warnings only when constant
kconfig: Warn if help text is blank
nios2: kconfig: Remove blank help text
arm: vt8500: kconfig: Remove blank help text
MIPS: kconfig: Remove blank help text
MIPS: BCM63XX: kconfig: Remove blank help text
lib/Kconfig.debug: Remove blank help text
Staging: rtl8192e: kconfig: Remove blank help text
Staging: rtl8192u: kconfig: Remove blank help text
mmc: kconfig: Remove blank help text
...
The omapfb driver fails to build after commit 23c35f48f5
("pinctrl: remove include file from <linux/device.h>") because it
relies on the <linux/pinctrl/consumer.h> and <linux/seq_file.h>
being pulled in by the <linux/device.h> header implicitly.
Include these headers explicitly to avoid the build failures.
Fixes: 23c35f48f5 ("pinctrl: remove include file from <linux/device.h>")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
[b.zolnierkie: fix include order and patch description]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
- fix display-timings lookup in the Device Tree in atmel_lcdfb
driver (Johan Hovold)
- fix video mode and line_length to be set correctly in vfb driver
(Pieter "PoroCYon" Sluys)
- fix returning nonsensical values to the user-space on GIO_FONTX
ioctl when using dummy console (Nicolas Pitre)
- add missing license tag to mmpfb driver (Arnd Bergmann)
- convert radeonfb and pxa3xx_gcu drivers to use ktime_get[_ts64]()
instead of the deprecated do_gettimeofday() (Arnd Bergmann)
- switch udlfb driver from using the pr_*() logging functions to
the dev_*() ones + related cleanups (Ladislav Michl)
- use __raw I/O accessors also on arm64 (Ji Zhang)
- fix Kconfig help text for intelfb driver (Randy Dunlap)
- do not duplicate features data in omapfb driver (Ladislav Michl)
- misc cleanups (Colin Ian King, Markus Elfring, Rasmus Villemoes,
Vasyl Gomonovych, Himanshu Jha, Michael Trimarchi)
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Merge tag 'fbdev-v4.16' of git://github.com/bzolnier/linux
Pull fbdev updates from Bartlomiej Zolnierkiewicz:
"There is nothing really major here:
- fix display-timings lookup in the Device Tree in atmel_lcdfb driver
(Johan Hovold)
- fix video mode and line_length to be set correctly in vfb driver
(Pieter "PoroCYon" Sluys)
- fix returning nonsensical values to the user-space on GIO_FONTX
ioctl when using dummy console (Nicolas Pitre)
- add missing license tag to mmpfb driver (Arnd Bergmann)
- convert radeonfb and pxa3xx_gcu drivers to use ktime_get[_ts64]()
instead of the deprecated do_gettimeofday() (Arnd Bergmann)
- switch udlfb driver from using the pr_*() logging functions to the
dev_*() ones + related cleanups (Ladislav Michl)
- use __raw I/O accessors also on arm64 (Ji Zhang)
- fix Kconfig help text for intelfb driver (Randy Dunlap)
- do not duplicate features data in omapfb driver (Ladislav Michl)
- misc cleanups (Colin Ian King, Markus Elfring, Rasmus Villemoes,
Vasyl Gomonovych, Himanshu Jha, Michael Trimarchi)"
* tag 'fbdev-v4.16' of git://github.com/bzolnier/linux: (25 commits)
video: udlfb: Switch from the pr_*() to the dev_*() logging functions
video: udlfb: Constify read only data
video: fbdev/mmp: add MODULE_LICENSE
console/dummy: leave .con_font_get set to NULL
fbdev: mxsfb: use framebuffer_alloc in the correct way
video: udlfb: Do not name private data 'dev'
video: udlfb: Remove noisy warnings
video: udlfb: Remove redundant gdev variable
video: udlfb: Remove unnecessary local variable
fbdev: auo_k190x: Use zeroing memory allocator instead of allocator/memset
vfb: fix video mode and line_length being set when loaded
fbdev: arm64 use __raw I/O memory api
omapfb: dss: Do not duplicate features data
video: fbdev: omap2: Use PTR_ERR_OR_ZERO()
fbdev: au1200fb: delete duplicate header contents
fbdev: pxa3xx: use ktime_get_ts64 for time stamps
fbdev: radeon: use ktime_get() for HZ calibration
video: smscufx: Improve a size determination in two functions
video: udlfb: Delete an unnecessary return statement in two functions
video: udlfb: Improve a size determination in dlfb_alloc_urb_list()
...
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Merge tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- skip AER driver error recovery callbacks for correctable errors
reported via ACPI APEI, as we already do for errors reported via the
native path (Tyler Baicar)
- fix DPC shared interrupt handling (Alex Williamson)
- print full DPC interrupt number (Keith Busch)
- enable DPC only if AER is available (Keith Busch)
- simplify DPC code (Bjorn Helgaas)
- calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn
Helgaas)
- enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn
Helgaas)
- move ASPM internal interfaces out of public header (Bjorn Helgaas)
- allow hot-removal of VGA devices (Mika Westerberg)
- speed up unplug and shutdown by assuming Thunderbolt controllers
don't support Command Completed events (Lukas Wunner)
- add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling,
Jay Cornwall)
- expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes)
- clean up PCI DMA interface usage (Christoph Hellwig)
- remove PCI pool API (replaced with DMA pool) (Romain Perier)
- deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan
Kaya)
- move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring)
- add PCI-specific wrappers for dev_info(), etc (Frederick Lawler)
- remove warnings on sysfs mmap failure (Bjorn Helgaas)
- quiet ROM validation messages (Alex Deucher)
- remove redundant memory alloc failure messages (Markus Elfring)
- fill in types for compile-time VGA and other I/O port resources
(Bjorn Helgaas)
- make "pci=pcie_scan_all" work for Root Ports as well as Downstream
Ports to help AmigaOne X1000 (Bjorn Helgaas)
- add SPDX tags to all PCI files (Bjorn Helgaas)
- quirk Marvell 9128 DMA aliases (Alex Williamson)
- quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas)
- fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas
Cassel)
- use DMA API to get MSI address for DesignWare IP (Niklas Cassel)
- fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I)
- fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun)
- add support for ARTPEC-7 SoC (Niklas Cassel)
- add endpoint-mode support for ARTPEC (Niklas Cassel)
- add Cadence PCIe host and endpoint controller driver (Cyrille
Pitchen)
- handle multiple INTx status bits being set in dra7xx (Vignesh R)
- translate dra7xx hwirq range to fix INTD handling (Vignesh R)
- remove deprecated Exynos PHY initialization code (Jaehoon Chung)
- fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu)
- fix NULL pointer dereference in iProc BCMA driver (Ray Jui)
- fix Keystone interrupt-controller-node lookup (Johan Hovold)
- constify qcom driver structures (Julia Lawall)
- rework Tegra config space mapping to increase space available for
endpoints (Vidya Sagar)
- simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy)
- remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy)
- add support for Global Fabric Manager Server (GFMS) event to
Microsemi Switchtec switch driver (Logan Gunthorpe)
- add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao)
* tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits)
PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller
dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller
PCI: endpoint: Fix EPF device name to support multi-function devices
PCI: endpoint: Add the function number as argument to EPC ops
PCI: cadence: Add host driver for Cadence PCIe controller
dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
PCI: Add vendor ID for Cadence
PCI: Add generic function to probe PCI host controllers
PCI: generic: fix missing call of pci_free_resource_list()
PCI: OF: Add generic function to parse and allocate PCI resources
PCI: Regroup all PCI related entries into drivers/pci/Makefile
PCI/DPC: Reformat DPC register definitions
PCI/DPC: Add and use DPC Status register field definitions
PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error()
PCI/DPC: Remove unnecessary RP PIO register structs
PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info()
PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info()
PCI/DPC: Make RP PIO log size check more generic
PCI/DPC: Rename local "status" to "dpc_status"
PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error()
...
Blank help texts are probably either a typo, a Kconfig misunderstanding,
or some kind of half-committing to adding a help text (in which case a
TODO comment would be clearer, if the help text really can't be added
right away).
Best to remove them, IMO.
Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Merge tag 'drm-for-v4.16' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"This seems to have been a comparatively quieter merge window, I assume
due to holidays etc. The "biggest" change is AMD header cleanups, which
merge/remove a bunch of them. The AMD gpu scheduler is now being made generic
with the etnaviv driver wanting to reuse the code, hopefully other drivers
can go in the same direction.
Otherwise it's the usual lots of stuff in i915/amdgpu, not so much stuff
elsewhere.
Core:
- Add .last_close and .output_poll_changed helpers to reduce driver footprints
- Fix plane clipping
- Improved debug printing support
- Add panel orientation property
- Update edid derived properties at edid setting
- Reduction in fbdev driver footprint
- Move amdgpu scheduler into core for other drivers to use.
i915:
- Selftest and IGT improvements
- Fast boot prep work on IPS, pipe config
- HW workarounds for Cannonlake, Geminilake
- Cannonlake clock and HDMI2.0 fixes
- GPU cache invalidation and context switch improvements
- Display planes cleanup
- New PMU interface for perf queries
- New firmware support for KBL/SKL
- Geminilake HW workaround for perforamce
- Coffeelake stolen memory improvements
- GPU reset robustness work
- Cannonlake horizontal plane flipping
- GVT work
amdgpu/radeon:
- RV and Vega header file cleanups (lots of lines gone!)
- TTM operation context support
- 48-bit GPUVM support for Vega/RV
- ECC support for Vega
- Resizeable BAR support
- Multi-display sync support
- Enable swapout for reserved BOs during allocation
- S3 fixes on Raven
- GPU reset cleanup and fixes
- 2+1 level GPU page table
amdkfd:
- GFX7/8 SDMA user queues support
- Hardware scheduling for multiple processes
- dGPU prep work
rcar:
- Added R8A7743/5 support
- System suspend/resume support
sun4i:
- Multi-plane support for YUV formats
- A83T and LVDS support
msm:
- Devfreq support for GPU
tegra:
- Prep work for adding Tegra186 support
- Tegra186 HDMI support
- HDMI2.0 and zpos support by using generic helpers
tilcdc:
- Misc fixes
omapdrm:
- Support memory bandwidth limits
- DSI command mode panel cleanups
- DMM error handling
exynos:
- drop the old IPP subdriver.
etnaviv:
- Occlusion query fixes
- Job handling fixes
- Prep work for hooking in gpu scheduler
armada:
- Move closer to atomic modesetting
- Allow disabling primary plane if overlay is full screen
imx:
- Format modifier support
- Add tile prefetch to PRE
- Runtime PM support for PRG
ast:
- fix LUT loading"
* tag 'drm-for-v4.16' of git://people.freedesktop.org/~airlied/linux: (1471 commits)
drm/ast: Load lut in crtc_commit
drm: Check for lessee in DROP_MASTER ioctl
drm: fix gpu scheduler link order
drm/amd/display: Demote error print to debug print when ATOM impl missing
dma-buf: fix reservation_object_wait_timeout_rcu once more v2
drm/amdgpu: Avoid leaking PM domain on driver unbind (v2)
drm/amd/amdgpu: Add Polaris version check
drm/amdgpu: Reenable manual GPU reset from sysfs
drm/amdgpu: disable MMHUB power gating on raven
drm/ttm: Don't unreserve swapped BOs that were previously reserved
drm/ttm: Don't add swapped BOs to swap-LRU list
drm/amdgpu: only check for ECC on Vega10
drm/amd/powerplay: Fix smu_table_entry.handle type
drm/ttm: add VADDR_FLAG_UPDATED_COUNT to correctly update dma_page global count
drm: Fix PANEL_ORIENTATION_QUIRKS breaking the Kconfig DRM menuconfig
drm/radeon: fill in rb backend map on evergreen/ni.
drm/amdgpu/gfx9: fix ngg enablement to clear gds reserved memory (v2)
drm/ttm: only free pages rather than update global memory count together
drm/amdgpu: fix CPU based VM updates
drm/amdgpu: fix typo in amdgpu_vce_validate_bo
...
Here is the set of "big" driver core patches for 4.16-rc1.
The majority of the work here is in the firmware subsystem, with reworks
to try to attempt to make the code easier to handle in the long run, but
no functional change. There's also some tree-wide sysfs attribute
fixups with lots of acks from the various subsystem maintainers, as well
as a handful of other normal fixes and changes.
And finally, some license cleanups for the driver core and sysfs code.
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the set of "big" driver core patches for 4.16-rc1.
The majority of the work here is in the firmware subsystem, with
reworks to try to attempt to make the code easier to handle in the
long run, but no functional change. There's also some tree-wide sysfs
attribute fixups with lots of acks from the various subsystem
maintainers, as well as a handful of other normal fixes and changes.
And finally, some license cleanups for the driver core and sysfs code.
All have been in linux-next for a while with no reported issues"
* tag 'driver-core-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (48 commits)
device property: Define type of PROPERTY_ENRTY_*() macros
device property: Reuse property_entry_free_data()
device property: Move property_entry_free_data() upper
firmware: Fix up docs referring to FIRMWARE_IN_KERNEL
firmware: Drop FIRMWARE_IN_KERNEL Kconfig option
USB: serial: keyspan: Drop firmware Kconfig options
sysfs: remove DEBUG defines
sysfs: use SPDX identifiers
drivers: base: add coredump driver ops
sysfs: add attribute specification for /sysfs/devices/.../coredump
test_firmware: fix missing unlock on error in config_num_requests_store()
test_firmware: make local symbol test_fw_config static
sysfs: turn WARN() into pr_warn()
firmware: Fix a typo in fallback-mechanisms.rst
treewide: Use DEVICE_ATTR_WO
treewide: Use DEVICE_ATTR_RO
treewide: Use DEVICE_ATTR_RW
sysfs.h: Use octal permissions
component: add debugfs support
bus: simple-pm-bus: convert bool SIMPLE_PM_BUS to tristate
...
* pci/resource:
PCI: tegra: Remove PCI_REASSIGN_ALL_BUS use on Tegra
resource: Set type when reserving new regions
resource: Set type of "reserve=" user-specified resources
irqchip/i8259: Set I/O port resource types correctly
powerpc: Set I/O port resource types correctly
MIPS: Set I/O port resource types correctly
vgacon: Set VGA struct resource types
PCI: Use dev_info() rather than dev_err() for ROM validation
PCI: Remove PCI_REASSIGN_ALL_RSRC use on arm and arm64
PCI: Remove sysfs resource mmap warning
Conflicts:
drivers/pci/rom.c
- First part of an overhaul of the NuBus subsystem, to bring it up to
modern driver model standards,
- A race condition fix for Mac,
- Defconfig updates.
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Merge tag 'm68k-for-v4.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- first part of an overhaul of the NuBus subsystem, to bring it up to
modern driver model standards
- a race condition fix for Mac
- defconfig updates
* tag 'm68k-for-v4.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
MAINTAINERS: Add NuBus subsystem entry
m68k/mac: Fix race conditions in OSS interrupt dispatch
nubus: Add support for the driver model
nubus: Add expansion_type values for various Mac models
nubus: Adopt standard linked list implementation
nubus: Rename struct nubus_dev
nubus: Rework /proc/bus/nubus/s/ implementation
nubus: Generalize block resource handling
nubus: Clean up whitespace
nubus: Remove redundant code
nubus: Call proc_mkdir() not more than once per slot directory
nubus: Validate slot resource IDs
nubus: Fix log spam
nubus: Use static functions where possible
nubus: Fix up header split
nubus: Avoid array underflow and overflow
m68k/defconfig: Update defconfigs for v4.15-rc1
Add devm_of_find_backlight and the corresponding release
function because some drivers use devres versions of functions
for acquiring device resources.
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/021f8fecfa3f374dc5dcb70fb07a6f6b019bea7b.1516810725.git.meghana.madhyastha@gmail.com
Add of_find_backlight, a helper function which is a generic version
of tinydrm_of_find_backlight that can be used by other drivers to avoid
repetition of code and simplify things.
Acked-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Meghana Madhyastha <meghana.madhyastha@gmail.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/116d160ba78be2e6dcbdcb6855622bce67da9472.1516810725.git.meghana.madhyastha@gmail.com
Gustavo A. R. Silva