In rare circumstances, a descriptor writeback flush may not work if it
arrives on a specific clock cycle as a writeback request is going out.
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
When the adapter is closed while it is simultaneously going through a
reset, it can cause a null-pointer dereference when the two different code
paths simultaneously cleanup up the Tx/Rx resources.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Fix up code so that changes in DCB settings
are detected only when ixgbe_dcbnl_set_all is called.
Previously, a series of 'change' commands followed by
a call to ixgbe_dcbnl_set_all() would always be handled
as a HW change - even if the net change was zero.
This patch checks for this case of no actual change and
skips going through the HW set process.
Without this fix, the link could reset and result in
a link flap.
The core change in this patch is to check for changes
in the ixgbe_copy_dcb_cfg() routine - and return
a bitmask of detected changes. The other
places where changes were detected previously can be removed.
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
For every transmitted packet, ppp_start_xmit() will stop the netdev
queue and then, if appropriate, restart it. This causes the TX softirq
to run, entirely gratuitously.
This is "only" a waste of CPU time in the normal case, but it's actively
harmful when the PPP device is a TEQL slave — the wakeup will cause the
offending device to receive the next TX packet from the TEQL queue, when
it *should* have gone to the next slave in the list. We end up seeing
large bursts of packets on just *one* slave device, rather than using
the full available bandwidth over all slaves.
This patch fixes the problem by *not* unconditionally stopping the queue
in ppp_start_xmit(). It adds a return value from ppp_xmit_process()
which indicates whether the queue should be stopped or not.
It *doesn't* remove the call to netif_wake_queue() from
ppp_xmit_process(), because other code paths (especially from
ppp_output_wakeup()) need it there and it's messy to push it out to the
other callers to do it based on the return value. So we leave it in
place — it's a no-op in the case where the queue wasn't stopped, so it's
harmless in the TX path.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull drm update from Dave Airlie:
"This pull just contains a forward of the Intel fixes from Daniel.
The only annoyance is the RC6 enable, which really should have made
-next, but since Ubuntu are shipping it I reckon its getting a good
testing now by the time 3.4 comes out.
The pull from Daniel contains his pull message to me:
"A few patches for 3.4, major part is 3 regression fixes:
- ppgtt broke hibernate on snb/ivb. Somehow our QA claims that it
still works, which is why this has not been caught earlier.
- ppgtt flails in combination with dmar. I kinda expected this one :(
- fence handling bugfix for gen2/3. Iirc this one is about a year
old, fix curtesy Chris Wilson. I've created an shockingly simple
i-g-t test to catch this in the future."
Wrt regressions I've just got a report that gmbus (newly enabled
again in 3.4) is a bit noisy. I'm looking into this atm.
Also included are the rc6 enable patches for snb from Eugeni. I
wanted to include these in the main 3.4 pull but screwed it up.
Please hit me. Imo these kind of patches really should go in
before -rc1, but in thise case rc6 has brought us tons of press and
guinea pigs^W^W testers and ubuntu is already running with it. So
I estimate a pretty small chance for this to blow up.
And some smaller things:
- two minor locking snafus
- server gt2 ivb pciid
- 2 patches to sanitize the register state left behind by the bios
some more
- 2 new quirk entries
- cs readback trick against missed IRQs from ivb also enabled on snb
- sprite fix from Jesse"
Let's see if the "enable RC6 on sandybridge" finally works and sticks.
I've been enabling it by hand (i915.i915_enable_rc6=1) for several
months on my Macbook Air, and it definitely makes a difference (and has
worked for me). But every time we enabled it before it showed some odd
hw buglet for *somebody*.
This time it's all good, I'm sure.
* 'drm-fixes-intel' of git://people.freedesktop.org/~airlied/linux:
drm/i915: treat src w & h as fixed point in sprite handling code
drm/i915: no-lvds quirk on MSI DC500
drm/i915: Add lock on drm_helper_resume_force_mode
drm/i915: don't leak struct_mutex lock on ppgtt init failures
drm/i915: disable ppgtt on snb when dmar is enabled
drm/i915: add Ivy Bridge GT2 Server entries
drm/i915: properly clear SSC1 bit in the pch refclock init code
drm/i915: apply CS reg readback trick against missed IRQ on snb
drm/i915: quirk away broken OpRegion VBT
drm/i915: enable plain RC6 on Sandy Bridge by default
drm/i915: allow to select rc6 modes via kernel parameter
drm/i915: Mark untiled BLT commands as fenced on gen2/3
drm/i915: properly restore the ppgtt page directory on resume
drm/i915: Sanitize BIOS debugging bits from PIPECONF
Pull drm fixes from Dave Airlie:
"Mainly nouveau fixes, one for a regressions in -rc1, fixes for booting
on a ppc G5, and a Kconfig fix. Two radeon fixes, one oops, one s/r
fix. One udl mmap fix. And one core drm fix to stop bad fbdev apps
overwriting bits of ram."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: Validate requested virtual size against allocated fb size
drm/radeon: Don't dereference possibly-NULL pointer.
mm, drm/udl: fixup vma flags on mmap
drm/radeon/kms: fix fans after resume
nouveau/bios: Fix tracking of BIOS image data
nouveau: Fix crash when pci_ram_rom() returns a size of 0
drm/nouveau: select POWER_SUPPLY
drm/nouveau: inform userspace of relaxed kernel subchannel requirements
Revert "drm/nouveau: inform userspace of new kernel subchannel requirements"
drm/nouveau: oops, create m2mf for nvd9 too
mplayer -vo fbdev tries to create a screen that is twice as tall as the
allocated framebuffer for "doublebuffering". By default, and all in-tree
users, only sufficient memory is allocated and mapped to satisfy the
smallest framebuffer and the virtual size is no larger than the actual.
For these users, we should therefore reject any userspace request to
create a screen that requires a buffer larger than the framebuffer
originally allocated.
References: https://bugs.freedesktop.org/show_bug.cgi?id=38138
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This was missed when we converted the source values to 16.16 fixed point.
Cc: stable@vger.kernel.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This hardware doesn't have an LVDS, it's a desktop box. Fix incorrect
LVDS detection.
Cc: stable@kernel.org
Signed-off-by: Anisse Astier <anisse@astier.eu>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
i915_drm_thaw was not locking the mode_config lock when calling
drm_helper_resume_force_mode. When there were multiple wake sources,
this caused FDI training failure on SNB which in turn corrupted the
display.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: Konstantin Belousov <kostikbel@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Pull dma-buf prime support from Dave Airlie:
"This isn't a majorly urgent thing to have, but we'd like to set the
stage for working on dma-buf support in the drm drivers for the next
merge window, so I'd like to push in the initial submission now so
people have something that we can build on top of. The code just
introduces the user interface and internal helper functions for
drivers to use.
We have driver support under development for i915, nouveau, udl on x86
and exynos, omapdrm on arm, which we would be aiming for the next
merge window."
In the -rc1 announcement I asked for people who would use this to
comment on it, and got severa "Yes please" from people for this and for
HSI (that I merged earlier).
So far crickets on pohmelfs and the DMA-mapping infrastructure.
* 'drm-prime-dmabuf-initial' of git://people.freedesktop.org/~airlied/linux:
drm: base prime/dma-buf support (v5)
Pull networking fixes from David Miller:
1) Provide device string properly for USB i2400m wimax devices, also
don't OOPS when providing firmware string. From Phil Sutter.
2) Add support for sh_eth SH7734 chips, from Nobuhiro Iwamatsu.
3) Add another device ID to USB zaurus driver, from Guan Xin.
4) Loop index start in pool vector iterator is wrong causing MAC to not
get configured in bnx2x driver, fix from Dmitry Kravkov.
5) EQL driver assumes HZ=100, fix from Eric Dumazet.
6) Now that skb_add_rx_frag() can specify the truesize increment
separately, do so in f_phonet and cdc_phonet, also from Eric
Dumazet.
7) virtio_net accidently uses net_ratelimit() not only on the kernel
warning but also the statistic bump, fix from Rick Jones.
8) ip_route_input_mc() uses fixed init_net namespace, oops, use
dev_net(dev) instead. Fix from Benjamin LaHaise.
9) dev_forward_skb() needs to clear the incoming interface index of the
SKB so that it looks like a new incoming packet, also from Benjamin
LaHaise.
10) iwlwifi mistakenly initializes a channel entry as 2GHZ instead of
5GHZ, fix from Stanislav Yakovlev.
11) Missing kmalloc() return value checks in orinoco, from Santosh
Nayak.
12) ath9k doesn't check for HT capabilities in the right way, it is
checking ht_supported instead of the ATH9K_HW_CAP_HT flag. Fix from
Sujith Manoharan.
13) Fix x86 BPF JIT emission of 16-bit immediate field of AND
instructions, from Feiran Zhuang.
14) Avoid infinite loop in GARP code when registering sysfs entries.
From David Ward.
15) rose protocol uses memcpy instead of memcmp in a device address
comparison, oops. Fix from Daniel Borkmann.
16) Fix build of lpc_eth due to dev_hw_addr_rancom() interface being
renamed to eth_hw_addr_random(). From Roland Stigge.
17) Make ipv6 RTM_GETROUTE interpret RTA_IIF attribute the same way
that ipv4 does. Fix from Shmulik Ladkani.
18) via-rhine has an inverted bit test, causing suspend/resume
regressions. Fix from Andreas Mohr.
19) RIONET assumes 4K page size, fix from Akinobu Mita.
20) Initialization of imask register in sky2 is buggy, because bits are
"or'd" into an uninitialized local variable. Fix from Lino
Sanfilippo.
21) Fix FCOE checksum offload handling, from Yi Zou.
22) Fix VLAN processing regression in e1000, from Jiri Pirko.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits)
sky2: dont overwrite settings for PHY Quick link
tg3: Fix 5717 serdes powerdown problem
net: usb: cdc_eem: fix mtu
net: sh_eth: fix endian check for architecture independent
usb/rtl8150 : Remove duplicated definitions
rionet: fix page allocation order of rionet_active
via-rhine: fix wait-bit inversion.
ipv6: Fix RTM_GETROUTE's interpretation of RTA_IIF to be consistent with ipv4
net: lpc_eth: Fix rename of dev_hw_addr_random
net/netfilter/nfnetlink_acct.c: use linux/atomic.h
rose_dev: fix memcpy-bug in rose_set_mac_address
Fix non TBI PHY access; a bad merge undid bug fix in a previous commit.
net/garp: avoid infinite loop if attribute already exists
x86 bpf_jit: fix a bug in emitting the 16-bit immediate operand of AND
bonding: emit event when bonding changes MAC
mac80211: fix oper channel timestamp updation
ath9k: Use HW HT capabilites properly
MAINTAINERS: adding maintainer for ipw2x00
net: orinoco: add error handling for failed kmalloc().
net/wireless: ipw2x00: fix a typo in wiphy struct initilization
...
This patch corrects a bug in function sky2_open() of the Marvell Yukon 2 driver
in which the settings for PHY quick link are overwritten.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Acked-by: Stephen Hemminger <shemminger@vyattta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If port 0 of a 5717 serdes device powers down, it hides the phy from
port 1. This patch works around the problem by keeping port 0's phy
powered up.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull HSI (High Speed Synchronous Serial Interface) framework from Carlos Chinea:
"The High Speed Synchronous Serial Interface (HSI) is a serial
interface mainly used for connecting application engines (APE) with
cellular modem engines (CMT) in cellular handsets.
The framework is currently being used for some people and we would
like to see it integrated into the kernel for 3.3. There is no HW
controller drivers in this pull, but some people have already some of
them pending which they would like to push as soon as this integrated.
I am also working on the acceptance for an TI OMAP one, based on a
compatible legacy version of the interface called SSI."
Ok, so it didn't get into 3.3, but here it is pulled into 3.4.
Several people piped up to say "yeah, we want this".
* 'for-next' of git://gitorious.org/kernel-hsi/kernel-hsi:
HSI: hsi_char: Update ioctl-number.txt
HSI: Add HSI API documentation
HSI: hsi_char: Add HSI char device kernel configuration
HSI: hsi_char: Add HSI char device driver
HSI: hsi: Introducing HSI framework
Pull powerpc fixes from Benjamin Herrenschmidt:
"This contains a couple more fixes for the system.h disintegration, a
trivial section mismatch fix, a couple of patches from akpm that I
didn't quite get he expected me to pickup, and a few more trivialities
form Kumar that he appear to have forgotten to send me in the previous
batch."
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/eeh: Fix use of set_current_state() in eeh event handling set_current_state() wart
powerpc/eeh: Remove eeh_event_handler()->daemonize()
powerpc/kvm: Fallout from system.h disintegration
powerpc: Fix fallout from system.h split up
powerpc: Mark const init data with __initconst instead of __initdata
powerpc/qe: Update the SNUM table for MPC8569 Rev2.0
powerpc/dts: Removed fsl,msi property from dts.
powerpc/epapr: add "memory" as a clobber to all hypercalls
powerpc/85xx: Enable I2C_CHARDEV and I2C_MPC options in defconfigs
powerpc/85xx: add the P1020UTM-PC DTS support
powerpc/85xx: add the P1020MBG-PC DTS support
powerpc/8xxx: remove 85xx/86xx restrictions from fsl_guts.h
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Merge tag 'for-linus' of git://github.com/rustyrussell/linux
Pull cpumask cleanups from Rusty Russell:
"(Somehow forgot to send this out; it's been sitting in linux-next, and
if you don't want it, it can sit there another cycle)"
I'm a sucker for things that actually delete lines of code.
Fix up trivial conflict in arch/arm/kernel/kprobes.c, where Rusty fixed
a user of &cpu_online_map to be cpu_online_mask, but that code got
deleted by commit b21d55e98a ("ARM: 7332/1: extract out code patch
function from kprobes").
* tag 'for-linus' of git://github.com/rustyrussell/linux:
cpumask: remove old cpu_*_map.
documentation: remove references to cpu_*_map.
drivers/cpufreq/db8500-cpufreq: remove references to cpu_*_map.
remove references to cpu_*_map in arch/
Totally unexpected that this regressed. Luckily it sounds like we just
need to have dmar disable on the igfx, not the entire system. At least
that's what a few days of testing between Tony Vroon and me indicates.
Reported-by: Tony Vroon <tony@linx.net>
Cc: Tony Vroon <tony@linx.net>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43024
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This adds PCI ID for IVB GT2 server variant which we were missing.
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
[danvet: fix up conflict because the patch has been diffed against next. tsk.]
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
There should be VM_MIXEDMAP, not VM_PFNMAP, because udl_gem_fault() inserts
pages via vm_insert_page(). Other drm/gem drivers already do this.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
On pre-R600 asics, the SpeedFanControl table is not
executed as part of ASIC_Init as it is on newer asics.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=29412
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
The code tries various methods for retreiving the BIOS data. However
it doesn't clear the bios->data pointer between the iterations.
In some cases, the shadow() method will fail and not update bios->data
at all, which will cause us to "score" the old data and incorrectly
attribute that score to the new method. This can cause double frees
later when disposing of the unused data.
Additionally, we were not freeing the data for methods that fail the
score test (we only freed when a "best" is superseeded, not when the
new method has a lower score than the exising "best"). Fix that as well.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From b15b244d6e6e20964bd4b85306722cb60c3c0809 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Mon, 2 Apr 2012 13:28:18 +1000
Subject:
Under some circumstances, pci_map_rom() can return a valid mapping
but a size of 0 (if it cannot find an image in the header).
This causes nouveau to try to kmalloc() a 0 sized pointer and
dereference it, which crashes.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Ben H. reported that building nouveau into the kernel and power supply
as a module was broken.
Just have nouveau select it, like radeon does.
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
* 'drm-nouveau-fixes' of git://git.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau: inform userspace of relaxed kernel subchannel requirements
Revert "drm/nouveau: inform userspace of new kernel subchannel requirements"
drm/nouveau: oops, create m2mf for nvd9 too
Make CDC EEM recalculate the hard_mtu after adjusting the
hard_header_len.
Without this, usbnet adjusts the MTU down to 1494 bytes, and the host is
unable to receive standard 1500-byte frames from the device.
Tested with the Linux USB Ethernet gadget.
Cc: Oliver Neukum <oliver@neukum.name>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
SuperH has the "CONFIG_CPU_LITTLE_ENDIAN" and the "__LITTLE_ENDIAN__".
But, other architecture doesn't have them. So, this patch fixes it.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There exist duplicated macro definitions in rtl8150.c, remove them.
Signed-off-by: Huajun Li <huajun.li.lee@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rionet_active is allocated from the page allocator and the allocation
order is calculated on the assumption that the page size is 4KB, so it
wastes memory on more than 4K page systems.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Bug appeared in a384a33bb1
("via-rhine: RHINE_WAIT_FOR macro removal). It can be noticed
during suspend/resume.
Signed-off-by: Andreas Mohr <andi@lisas.de>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: David Lv <DavidLv@viatech.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
In parallel to the integration of lpc_eth.c, dev_hw_addr_random() has been
renamed to eth_hw_addr_random(). This patch fixes it also in the new driver
lpc_eth.c.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The merge done in commit b26e478f undid bug fix in commit c3e072f8
("net: fsl_pq_mdio: fix non tbi phy access"), with the result that non
TBI (e.g. MDIO) PHYs cannot be accessed.
Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Noticed by staring at intel_reg_dumper diffs. Unfortunately it does
not seem to completely fix the bug.
Still, it's good to get this right, and maybe it helps someplace else.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=47117
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Ben Widawsky reported missed IRQ issues and this patch here helps.
We have one other missed IRQ report still left on snb, reported by QA:
https://bugs.freedesktop.org/show_bug.cgi?id=46145
This is _not_ a regression due to the forcewake voodoo though, it
started showing up before that was applied and has been on-and-off for
the past few weeks. According to QA this patch does not help. But the
missed IRQ is always from the blt ring (despite running piglit, so
also render activity expected), so I'm hopefully that this is an issue
with the blt ring itself.
Tested-by: Ben Widawsky <ben@bwidawsk.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Somehow the BIOS manages to screw things up when copying the VBT
around, because the one we scrap from the VBIOS rom actually works.
Cc: stable@kernel.org
Tested-by: Markus Heinz <markus.heinz@uni-dortmund.de>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=28812
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This is yet another chapter in the ongoing saga of bringing RC6 to Sandy
Bridge machines by default.
Now that we have discovered that RC6 issues are triggered by RC6+ state,
let's try to disable it by default. Plain RC6 is the one responsible for
most energy savings, and so far it haven't given any problems - at least,
none we are aware of.
So with this, when i915_enable_rc6=-1 (e.g., the default value), we'll
attempt to enable plain RC6 only on SNB. For Ivy Bridge, the behavior
stays the same as always - we enable both RC6 and deep RC6.
Note that while this exact patch does not has explicit tested-by's, the
equivalent settings were fixed in 3.3 kernel by a smaller patch. And it
has also received considerable testing through Canonical RC6 task-force
testing at https://wiki.ubuntu.com/Kernel/PowerManagementRC6. Up to date,
it looks like all the known issues are gone.
v2: improve description and reference a couple of open bugs related to
RC6 which seem to be fixed with this change.
References: https://bugs.freedesktop.org/show_bug.cgi?id=41682
References: https://bugs.freedesktop.org/show_bug.cgi?id=38567
References: https://bugs.freedesktop.org/show_bug.cgi?id=44867
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This allows to select which rc6 modes are to be used via kernel parameter,
via a bitmask parameter. E.g.:
- to enable rc6, i915_enable_rc6=1
- to enable rc6 and deep rc6, i915_enable_rc6=3
- to enable rc6 and deepest rc6, use i915_enable_rc6=5
- to enable rc6, deep and deepest rc6, use i915_enable_rc6=7
Please keep in mind that the deepest RC6 state really should NOT be used
by default, as it could potentially worsen the issues with deep RC6. So do
enable it only when you know what you are doing. However, having it around
could help solving possible future rc6-related issues and their debugging
on user machines.
Note that this changes behavior - previously, value of 1 would enable both
RC6 and deep RC6. Now it should only enable RC6 and deep/deepest RC6
stages must be enabled manually.
v2: address Chris Wilson comments and clean up the code.
References: https://bugs.freedesktop.org/show_bug.cgi?id=42579
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ben Widawsky <benjamin.widawsky@intel.com>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The BLT commands on gen2/3 utilize the fence registers and so we cannot
modify any fences for the object whilst those commands are in flight.
Currently we marked tiled commands as occupying a fence, but forgot to
restrict the untiled commands from preventing a fence being assigned
before they were completed.
One side-effect is that we ten have to double check that a fence was
allocated for a fenced buffer during move-to-active.
Reported-by: Jiri Slaby <jirislaby@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43427
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=47990
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Testcase: i-g-t/tests/gem_tiled_after_untiled_blt
Tested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The ppgtt page directory lives in a snatched part of the gtt pte
range. Which naturally gets cleared on hibernate when we pull the
power. Suspend to ram (which is what I've tested) works because
despite the fact that this is a mmio region, it is actually back by
system ram.
Fix this by moving the page directory setup code to the ppgtt init
code (which gets called on resume).
This fixes hibernate on my ivb and snb.
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Quoting the BSpec from time immemorial:
PIPEACONF, bits 28:27: Frame Start Delay (Debug)
Used to delay the frame start signal that is sent to the display planes.
Care must be taken to insure that there are enough lines during VBLANK
to support this setting.
An instance of the BIOS leaving these bits set was found in the wild,
where it caused our modesetting to go all squiffy and skewiff.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=47271
Reported-and-tested-by: Eva Wang <evawang@linpus.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43012
Reported-and-tested-by: Carl Richell <carl@system76.com>
Cc: stable@kernel.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Pull virtio S3 support patches from Amit Shah:
"Turns out S3 is not different from S4 for virtio devices: the device
is assumed to be reset, so the host and guest state are to be assumed
to be out of sync upon resume. We handle the S4 case with exactly the
same scenario, so just point the suspend/resume routines to the
freeze/restore ones.
Once that is done, we also use the PM API's macro to initialise the
sleep functions.
A couple of cleanups are included: there's no need for special thaw
processing in the balloon driver, so that's addressed in patches 1 and
2.
Testing: both S3 and S4 support have been tested using these patches
using a similar method used earlier during S4 patch development: a
guest is started with virtio-blk as the only disk, a virtio network
card, a virtio-serial port and a virtio balloon device. Ping from
guest to host, dd /dev/zero to a file on the disk, and IO from the
host on the virtio-serial port, all at once, while exercising S4 and
S3 (separately) were tested. They all continue to work fine after
resume. virtio balloon values too were tested by inflating and
deflating the balloon."
Pulling from Amit, since Rusty is off getting married (and presumably
shaving people).
* 's3-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/amit/virtio-console:
virtio-pci: switch to PM ops macro to initialise PM functions
virtio-pci: S3 support
virtio-pci: drop restore_common()
virtio: drop thaw PM operation
virtio: balloon: Allow stats update after restore from S4
Pull second try at vfs part d#2 from Al Viro:
"Miklos' first series (with do_lookup() rewrite split into edible
chunks) + assorted bits and pieces.
The 'untangling of do_lookup()' series is is a splitup of what used to
be a monolithic patch from Miklos, so this series is basically "how do
I convince myself that his patch is correct (or find a hole in it)".
No holes found and I like the resulting cleanup, so in it went..."
Changes from try 1: Fix a boot problem with selinux, and commit messages
prettied up a bit.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits)
vfs: fix out-of-date dentry_unhash() comment
vfs: split __lookup_hash
untangling do_lookup() - take __lookup_hash()-calling case out of line.
untangling do_lookup() - switch to calling __lookup_hash()
untangling do_lookup() - merge d_alloc_and_lookup() callers
untangling do_lookup() - merge failure exits in !dentry case
untangling do_lookup() - massage !dentry case towards __lookup_hash()
untangling do_lookup() - get rid of need_reval in !dentry case
untangling do_lookup() - eliminate a loop.
untangling do_lookup() - expand the area under ->i_mutex
untangling do_lookup() - isolate !dentry stuff from the rest of it.
vfs: move MAY_EXEC check from __lookup_hash()
vfs: don't revalidate just looked up dentry
vfs: fix d_need_lookup/d_revalidate order in do_lookup
ext3: move headers to fs/ext3/
migrate ext2_fs.h guts to fs/ext2/ext2.h
new helper: ext2_image_size()
get rid of pointless includes of ext2_fs.h
ext2: No longer export ext2_fs.h to user space
mtdchar: kill persistently held vfsmount
...
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
Pull SCSI updates from James Bottomley:
"This is primarily another round of driver updates (lpfc, bfa, fcoe,
ipr) plus a new ufshcd driver. There shouldn't be anything
controversial in here (The final deletion of scsi proc_ops which
caused some build breakage has been held over until the next merge
window to give us more time to stabilise it).
I'm afraid, with me moving continents at exactly the wrong time,
anything submitted after the merge window opened has been held over to
the next merge window."
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (63 commits)
[SCSI] ipr: Driver version 2.5.3
[SCSI] ipr: Increase alignment boundary of command blocks
[SCSI] ipr: Increase max concurrent oustanding commands
[SCSI] ipr: Remove unnecessary memory barriers
[SCSI] ipr: Remove unnecessary interrupt clearing on new adapters
[SCSI] ipr: Fix target id allocation re-use problem
[SCSI] atp870u, mpt2sas, qla4xxx use pci_dev->revision
[SCSI] fcoe: Drop the rtnl_mutex before calling fcoe_ctlr_link_up
[SCSI] bfa: Update the driver version to 3.0.23.0
[SCSI] bfa: BSG and User interface fixes.
[SCSI] bfa: Fix to avoid vport delete hang on request queue full scenario.
[SCSI] bfa: Move service parameter programming logic into firmware.
[SCSI] bfa: Revised Fabric Assigned Address(FAA) feature implementation.
[SCSI] bfa: Flash controller IOC pll init fixes.
[SCSI] bfa: Serialize the IOC hw semaphore unlock logic.
[SCSI] bfa: Modify ISR to process pending completions
[SCSI] bfa: Add fc host issue lip support
[SCSI] mpt2sas: remove extraneous sas_log_info messages
[SCSI] libfc: fcoe_transport_create fails in single-CPU environment
[SCSI] fcoe: reduce contention for fcoe_rx_list lock [v2]
...
... and mtdchar_notifier along with it; just have ->drop_inode() that
will unconditionally get evict them instead of dances on mtd device
removal and use simple_pin_fs() instead of kern_mount()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Since 3.2.12 and 3.3, some systems are failing to boot with a BUG_ON.
Some other systems using the pata_jmicron driver fail to boot because no
disks are detected. Passing pcie_aspm=force on the kernel command line
works around it.
The cause: commit 4949be1682 ("PCI: ignore pre-1.1 ASPM quirking when
ASPM is disabled") changed the behaviour of pcie_aspm_sanity_check() to
always return 0 if aspm is disabled, in order to avoid cases where we
changed ASPM state on pre-PCIe 1.1 devices.
This skipped the secondary function of pcie_aspm_sanity_check which was
to avoid us enabling ASPM on devices that had non-PCIe children, causing
trouble later on. Move the aspm_disabled check so we continue to honour
that scenario.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=42979 and
http://bugs.debian.org/665420
Reported-by: Romain Francoise <romain@orebokech.com> # kernel panic
Reported-by: Chris Holland <bandidoirlandes@gmail.com> # disk detection trouble
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Cc: stable@vger.kernel.org
Tested-by: Hatem Masmoudi <hatem.masmoudi@gmail.com> # Dell Latitude E5520
Tested-by: janek <jan0x6c@gmail.com> # pata_jmicron with JMB362/JMB363
[jn: with more symptoms in log message]
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David S. Miller