The memory allocator passed to __unflatten_device_tree() (e.g. a wrapped
kzalloc) can fail so add the missing sanity check to avoid dereferencing
a NULL pointer.
Fixes: fe14042358 ("of/flattree: Refactor unflatten_device_tree and add fdt_unflatten_tree")
Cc: stable <stable@vger.kernel.org> # 2.6.38
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Highlights include:
- rework the Linux page table geometry to lower memory usage on 64-bit Book3S
(IBM chips) using the Hash MMU.
- support for a new device tree binding for discovering CPU features on future
firmwares.
- Freescale updates from Scott: "Includes a fix for a powerpc/next mm regression
on 64e, a fix for a kernel hang on 64e when using a debugger inside a
relocated kernel, a qman fix, and misc qe improvements."
Thanks to:
Christophe Leroy, Gavin Shan, Horia Geantă, LiuHailong, Nicholas Piggin, Roy
Pledge, Scott Wood, Valentin Longchamp.
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Merge tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc updates from Michael Ellerman:
"The change to the Linux page table geometry was delayed for more
testing with 16G pages, and there's the new CPU features stuff which
just needed one more polish before going in. Plus a few changes from
Scott which came in a bit late. And then various fixes, mostly minor.
Summary highlights:
- rework the Linux page table geometry to lower memory usage on
64-bit Book3S (IBM chips) using the Hash MMU.
- support for a new device tree binding for discovering CPU features
on future firmwares.
- Freescale updates from Scott:
"Includes a fix for a powerpc/next mm regression on 64e, a fix for
a kernel hang on 64e when using a debugger inside a relocated
kernel, a qman fix, and misc qe improvements."
Thanks to: Christophe Leroy, Gavin Shan, Horia Geantă, LiuHailong,
Nicholas Piggin, Roy Pledge, Scott Wood, Valentin Longchamp"
* tag 'powerpc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Support new device tree binding for discovering CPU features
powerpc: Don't print cpu_spec->cpu_name if it's NULL
of/fdt: introduce of_scan_flat_dt_subnodes and of_get_flat_dt_phandle
powerpc/64s: Fix unnecessary machine check handler relocation branch
powerpc/mm/book3s/64: Rework page table geometry for lower memory usage
powerpc: Fix distclean with Makefile.postlink
powerpc/64e: Don't place the stack beyond TASK_SIZE
powerpc/powernv: Block PCI config access on BCM5718 during EEH recovery
powerpc/8xx: Adding support of IRQ in MPC8xx GPIO
soc/fsl/qbman: Disable IRQs for deferred QBMan work
soc/fsl/qe: add EXPORT_SYMBOL for the 2 qe_tdm functions
soc/fsl/qe: only apply QE_General4 workaround on affected SoCs
soc/fsl/qe: round brg_freq to 1kHz granularity
soc/fsl/qe: get rid of immrbar_virt_to_phys()
net: ethernet: ucc_geth: fix MEM_PART_MURAM mode
powerpc/64e: Fix hang when debugging programs with relocated kernel
A change to function pointers that was meant to address a sparse warning
turned out to cause hundreds of new gcc-7 warnings:
include/linux/of_irq.h:11:13: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]
drivers/of/of_reserved_mem.c: In function '__reserved_mem_init_node':
drivers/of/of_reserved_mem.c:200:7: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]
int const (*initfn)(struct reserved_mem *rmem) = i->data;
Turns out the sparse warnings were spurious and have been fixed in
upstream sparse since 0.5.0 in commit "sparse: treat function pointers
as pointers to const data".
This partially reverts commit 17a70355ea.
Fixes: 17a70355ea ("of: fix sparse warnings in fdt, irq, reserved mem, and resolver code")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Herring <robh@kernel.org>
This includes:
* Some code optimizations for the Intel VT-d driver
* Code to switch off a previously enabled Intel IOMMU
* Support for 'struct iommu_device' for OMAP, Rockchip and
Mediatek IOMMUs
* Some header optimizations for IOMMU core code headers and a
few fixes that became necessary in other parts of the kernel
because of that
* ACPI/IORT updates and fixes
* Some Exynos IOMMU optimizations
* Code updates for the IOMMU dma-api code to bring it closer to
use per-cpu iova caches
* New command-line option to set default domain type allocated
by the iommu core code
* Another command line option to allow the Intel IOMMU switched
off in a tboot environment
* ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using
an IDENTITY domain in conjunction with DMA ops, Support for
SMR masking, Support for 16-bit ASIDs (was previously broken)
* Various other small fixes and improvements
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Merge tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
- code optimizations for the Intel VT-d driver
- ability to switch off a previously enabled Intel IOMMU
- support for 'struct iommu_device' for OMAP, Rockchip and Mediatek
IOMMUs
- header optimizations for IOMMU core code headers and a few fixes that
became necessary in other parts of the kernel because of that
- ACPI/IORT updates and fixes
- Exynos IOMMU optimizations
- updates for the IOMMU dma-api code to bring it closer to use per-cpu
iova caches
- new command-line option to set default domain type allocated by the
iommu core code
- another command line option to allow the Intel IOMMU switched off in
a tboot environment
- ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using an
IDENTITY domain in conjunction with DMA ops, Support for SMR masking,
Support for 16-bit ASIDs (was previously broken)
- various other small fixes and improvements
* tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (63 commits)
soc/qbman: Move dma-mapping.h include to qman_priv.h
soc/qbman: Fix implicit header dependency now causing build fails
iommu: Remove trace-events include from iommu.h
iommu: Remove pci.h include from trace/events/iommu.h
arm: dma-mapping: Don't override dma_ops in arch_setup_dma_ops()
ACPI/IORT: Fix CONFIG_IOMMU_API dependency
iommu/vt-d: Don't print the failure message when booting non-kdump kernel
iommu: Move report_iommu_fault() to iommu.c
iommu: Include device.h in iommu.h
x86, iommu/vt-d: Add an option to disable Intel IOMMU force on
iommu/arm-smmu: Return IOVA in iova_to_phys when SMMU is bypassed
iommu/arm-smmu: Correct sid to mask
iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid()
iommu: Make iommu_bus_notifier return NOTIFY_DONE rather than error code
omap3isp: Remove iommu_group related code
iommu/omap: Add iommu-group support
iommu/omap: Make use of 'struct iommu_device'
iommu/omap: Store iommu_dev pointer in arch_data
iommu/omap: Move data structures to omap-iommu.h
iommu/omap: Drop legacy-style device support
...
Introduce primitives for FDT parsing. These will be used for powerpc
cpufeatures node scanning, which has quite complex structure but should
be processed early.
Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Merge tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- add framework for supporting PCIe devices in Endpoint mode (Kishon
Vijay Abraham I)
- use non-postable PCI config space mappings when possible (Lorenzo
Pieralisi)
- clean up and unify mmap of PCI BARs (David Woodhouse)
- export and unify Function Level Reset support (Christoph Hellwig)
- avoid FLR for Intel 82579 NICs (Sasha Neftin)
- add pci_request_irq() and pci_free_irq() helpers (Christoph Hellwig)
- short-circuit config access failures for disconnected devices (Keith
Busch)
- remove D3 sleep delay when possible (Adrian Hunter)
- freeze PME scan before suspending devices (Lukas Wunner)
- stop disabling MSI/MSI-X in pci_device_shutdown() (Prarit Bhargava)
- disable boot interrupt quirk for ASUS M2N-LR (Stefan Assmann)
- add arch-specific alignment control to improve device passthrough by
avoiding multiple BARs in a page (Yongji Xie)
- add sysfs sriov_drivers_autoprobe to control VF driver binding
(Bodong Wang)
- allow slots below PCI-to-PCIe "reverse bridges" (Bjorn Helgaas)
- fix crashes when unbinding host controllers that don't support
removal (Brian Norris)
- add driver for MicroSemi Switchtec management interface (Logan
Gunthorpe)
- add driver for Faraday Technology FTPCI100 host bridge (Linus
Walleij)
- add i.MX7D support (Andrey Smirnov)
- use generic MSI support for Aardvark (Thomas Petazzoni)
- make Rockchip driver modular (Brian Norris)
- advertise 128-byte Read Completion Boundary support for Rockchip
(Shawn Lin)
- advertise PCI_EXP_LNKSTA_SLC for Rockchip root port (Shawn Lin)
- convert atomic_t to refcount_t in HV driver (Elena Reshetova)
- add CPU IRQ affinity in HV driver (K. Y. Srinivasan)
- fix PCI bus removal in HV driver (Long Li)
- add support for ThunderX2 DMA alias topology (Jayachandran C)
- add ThunderX pass2.x 2nd node MCFG quirk (Tomasz Nowicki)
- add ITE 8893 bridge DMA alias quirk (Jarod Wilson)
- restrict Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices
(Manish Jaggi)
* tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (146 commits)
PCI: Don't allow unbinding host controllers that aren't prepared
ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP
MAINTAINERS: Add PCI Endpoint maintainer
Documentation: PCI: Add userguide for PCI endpoint test function
tools: PCI: Add sample test script to invoke pcitest
tools: PCI: Add a userspace tool to test PCI endpoint
Documentation: misc-devices: Add Documentation for pci-endpoint-test driver
misc: Add host side PCI driver for PCI test function device
PCI: Add device IDs for DRA74x and DRA72x
dt-bindings: PCI: dra7xx: Add DT bindings to enable unaligned access
PCI: dwc: dra7xx: Workaround for errata id i870
dt-bindings: PCI: dra7xx: Add DT bindings for PCI dra7xx EP mode
PCI: dwc: dra7xx: Add EP mode support
PCI: dwc: dra7xx: Facilitate wrapper and MSI interrupts to be enabled independently
dt-bindings: PCI: Add DT bindings for PCI designware EP mode
PCI: dwc: designware: Add EP mode support
Documentation: PCI: Add binding documentation for pci-test endpoint function
ixgbe: Use pcie_flr() instead of duplicating it
IB/hfi1: Use pcie_flr() instead of duplicating it
PCI: imx6: Fix spelling mistake: "contol" -> "control"
...
- Fix sparse warnings in drivers/of/.
- Add more overlay unittests.
- Update dtc to v1.4.4-8-g756ffc4f52f6. This adds more checks on dts
files such as unit-address formatting and stricter character sets for
node and property names.
- Add a common DT modalias function.
- Move trivial-devices.txt up and out of i2c dir.
- ARM NVIC interrupt controller binding.
- Vendor prefixes for Sensirion, Dioo, Nordic, ROHM.
- Correct some binding file locations.
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Merge tag 'devicetree-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
- fix sparse warnings in drivers/of/
- add more overlay unittests
- update dtc to v1.4.4-8-g756ffc4f52f6. This adds more checks on dts
files such as unit-address formatting and stricter character sets for
node and property names
- add a common DT modalias function
- move trivial-devices.txt up and out of i2c dir
- ARM NVIC interrupt controller binding
- vendor prefixes for Sensirion, Dioo, Nordic, ROHM
- correct some binding file locations
* tag 'devicetree-for-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (24 commits)
of: fix sparse warnings in fdt, irq, reserved mem, and resolver code
of: fix sparse warning in of_pci_range_parser_one
of: fix sparse warnings in of_find_next_cache_node
of/unittest: Missing unlocks on error
of: fix uninitialized variable warning for overlay test
of: fix unittest build without CONFIG_OF_OVERLAY
of: Add unit tests for applying overlays
of: per-file dtc compiler flags
fpga: region: add missing DT documentation for config complete timeout
of: Add vendor prefix for ROHM Semiconductor
of: fix "/cpus" reference leak in of_numa_parse_cpu_nodes()
of: Add vendor prefix for Nordic Semiconductor
dt-bindings: arm,nvic: Binding for ARM NVIC interrupt controller on Cortex-M
dtc: update warning settings for new bus and node/property name checks
scripts/dtc: Update to upstream version v1.4.4-8-g756ffc4f52f6
scripts/dtc: automate getting dtc version and log in update script
of: Add function for generating a DT modalias with a newline
of: fix of_device_get_modalias returned length when truncating buffers
Documentation: devicetree: move trivial-devices out of I2C realm
dt-bindings: add vendor prefix for Dioo
..
Highlights include:
- Larger virtual address space on 64-bit server CPUs. By default we use a 128TB
virtual address space, but a process can request access to the full 512TB by
passing a hint to mmap().
- Support for the new Power9 "XIVE" interrupt controller.
- TLB flushing optimisations for the radix MMU on Power9.
- Support for CAPI cards on Power9, using the "Coherent Accelerator Interface
Architecture 2.0".
- The ability to configure the mmap randomisation limits at build and runtime.
- Several small fixes and cleanups to the kprobes code, as well as support for
KPROBES_ON_FTRACE.
- Major improvements to handling of system reset interrupts, correctly treating
them as NMIs, giving them a dedicated stack and using a new hypervisor call
to trigger them, all of which should aid debugging and robustness.
Many fixes and other minor enhancements.
Thanks to:
Alastair D'Silva, Alexey Kardashevskiy, Alistair Popple, Andrew Donnellan,
Aneesh Kumar K.V, Anshuman Khandual, Anton Blanchard, Balbir Singh, Ben
Hutchings, Benjamin Herrenschmidt, Bhupesh Sharma, Chris Packham, Christian
Zigotzky, Christophe Leroy, Christophe Lombard, Daniel Axtens, David Gibson,
Gautham R. Shenoy, Gavin Shan, Geert Uytterhoeven, Guilherme G. Piccoli,
Hamish Martin, Hari Bathini, Kees Cook, Laurent Dufour, Madhavan Srinivasan,
Mahesh J Salgaonkar, Mahesh Salgaonkar, Masami Hiramatsu, Matt Brown, Matthew
R. Ochs, Michael Neuling, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran,
Pan Xinhui, Paul Mackerras, Rashmica Gupta, Russell Currey, Sukadev
Bhattiprolu, Thadeu Lima de Souza Cascardo, Tobin C. Harding, Tyrel Datwyler,
Uma Krishnan, Vaibhav Jain, Vipin K Parashar, Yang Shi.
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Merge tag 'powerpc-4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights include:
- Larger virtual address space on 64-bit server CPUs. By default we
use a 128TB virtual address space, but a process can request access
to the full 512TB by passing a hint to mmap().
- Support for the new Power9 "XIVE" interrupt controller.
- TLB flushing optimisations for the radix MMU on Power9.
- Support for CAPI cards on Power9, using the "Coherent Accelerator
Interface Architecture 2.0".
- The ability to configure the mmap randomisation limits at build and
runtime.
- Several small fixes and cleanups to the kprobes code, as well as
support for KPROBES_ON_FTRACE.
- Major improvements to handling of system reset interrupts,
correctly treating them as NMIs, giving them a dedicated stack and
using a new hypervisor call to trigger them, all of which should
aid debugging and robustness.
- Many fixes and other minor enhancements.
Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Alistair Popple,
Andrew Donnellan, Aneesh Kumar K.V, Anshuman Khandual, Anton
Blanchard, Balbir Singh, Ben Hutchings, Benjamin Herrenschmidt,
Bhupesh Sharma, Chris Packham, Christian Zigotzky, Christophe Leroy,
Christophe Lombard, Daniel Axtens, David Gibson, Gautham R. Shenoy,
Gavin Shan, Geert Uytterhoeven, Guilherme G. Piccoli, Hamish Martin,
Hari Bathini, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Mahesh J
Salgaonkar, Mahesh Salgaonkar, Masami Hiramatsu, Matt Brown, Matthew
R. Ochs, Michael Neuling, Naveen N. Rao, Nicholas Piggin, Oliver
O'Halloran, Pan Xinhui, Paul Mackerras, Rashmica Gupta, Russell
Currey, Sukadev Bhattiprolu, Thadeu Lima de Souza Cascardo, Tobin C.
Harding, Tyrel Datwyler, Uma Krishnan, Vaibhav Jain, Vipin K Parashar,
Yang Shi"
* tag 'powerpc-4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (214 commits)
powerpc/64s: Power9 has no LPCR[VRMASD] field so don't set it
powerpc/powernv: Fix TCE kill on NVLink2
powerpc/mm/radix: Drop support for CPUs without lockless tlbie
powerpc/book3s/mce: Move add_taint() later in virtual mode
powerpc/sysfs: Move #ifdef CONFIG_HOTPLUG_CPU out of the function body
powerpc/smp: Document irq enable/disable after migrating IRQs
powerpc/mpc52xx: Don't select user-visible RTAS_PROC
powerpc/powernv: Document cxl dependency on special case in pnv_eeh_reset()
powerpc/eeh: Clean up and document event handling functions
powerpc/eeh: Avoid use after free in eeh_handle_special_event()
cxl: Mask slice error interrupts after first occurrence
cxl: Route eeh events to all drivers in cxl_pci_error_detected()
cxl: Force context lock during EEH flow
powerpc/64: Allow CONFIG_RELOCATABLE if COMPILE_TEST
powerpc/xmon: Teach xmon oops about radix vectors
powerpc/mm/hash: Fix off-by-one in comment about kernel contexts ids
powerpc/pseries: Enable VFIO
powerpc/powernv: Fix iommu table size calculation hook for small tables
powerpc/powernv: Check kzalloc() return value in pnv_pci_table_alloc
powerpc: Add arch/powerpc/tools directory
...
sparse generates the following warnings in drivers/of/:
../drivers/of/fdt.c:63:36: warning: cast to restricted __be32
../drivers/of/fdt.c:68:33: warning: cast to restricted __be32
../drivers/of/irq.c:105:88: warning: incorrect type in initializer (different base types)
../drivers/of/irq.c:105:88: expected restricted __be32
../drivers/of/irq.c:105:88: got int
../drivers/of/irq.c:526:35: warning: incorrect type in assignment (different modifiers)
../drivers/of/irq.c:526:35: expected int ( *const [usertype] irq_init_cb )( ... )
../drivers/of/irq.c:526:35: got void const *const data
../drivers/of/of_reserved_mem.c:200:50: warning: incorrect type in initializer (different modifiers)
../drivers/of/of_reserved_mem.c:200:50: expected int ( *[usertype] initfn )( ... )
../drivers/of/of_reserved_mem.c:200:50: got void const *const data
../drivers/of/resolver.c:95:42: warning: incorrect type in assignment (different base types)
../drivers/of/resolver.c:95:42: expected unsigned int [unsigned] [usertype] <noident>
../drivers/of/resolver.c:95:42: got restricted __be32 [usertype] <noident>
All these are harmless type mismatches fixed by adjusting the types.
Signed-off-by: Rob Herring <robh@kernel.org>
sparse gives the following warning for 'pci_space':
../drivers/of/address.c:266:26: warning: incorrect type in assignment (different base types)
../drivers/of/address.c:266:26: expected unsigned int [unsigned] [usertype] pci_space
../drivers/of/address.c:266:26: got restricted __be32 const [usertype] <noident>
It appears that pci_space is only ever accessed on powerpc, so the endian
swap is often not needed.
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
sparse gives a warning that 'handle' is not a __be32:
../drivers/of/base.c:2261:61: warning: incorrect type in argument 1 (different base types)
../drivers/of/base.c:2261:61: expected restricted __be32 const [usertype] *p
../drivers/of/base.c:2261:61: got unsigned int const [usertype] *[assigned] handle
We could just change the type, but the code can be improved by using
of_parse_phandle instead of open coding it with of_get_property and
of_find_node_by_phandle.
Signed-off-by: Rob Herring <robh@kernel.org>
Static checkers complain that we should unlock before returning. Which
is true.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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Merge tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux
Pull drm u pdates from Dave Airlie:
"This is the main drm pull request for v4.12. Apart from two fixes
pulls, everything should have been in drm-next for at least 2 weeks.
The biggest thing in here is AMD released the public headers for their
upcoming VEGA GPUs. These as always are quite a sizeable chunk of
header files. They've also added initial non-display support for those
GPUs, though they aren't available in production yet.
Otherwise it's pretty much normal.
New bridge drivers:
- megachips-stdpxxxx-ge-b850v3-fw LVDS->DP++
- generic LVDS bridge support.
Core:
- Displayport link train failure reporting to userspace
- debugfs interface cleaned up
- subsystem TODO in kerneldoc now
- Extended fbdev support (flipping and vblank wait)
- drm_platform removed
- EDP CRC support in helper
- HF-VSDB SCDC support in EDID parser
- Lots of code cleanups and header extraction
- Thunderbolt external GPU awareness
- Atomic helper improvements
- Documentation improvements
panel:
- Sitronix and Samsung new panel support
amdgpu:
- Preliminary vega10 support
- Multi-level page table support
- GPU sensor support for userspace
- PRT support for sparse buffers
- SR-IOV improvements
- Non-contig VRAM CPU mapping
i915:
- Atomic modesetting enabled by default on Gen5+
- LSPCON improvements
- Atomic state handling for cdclk
- GPU reset improvements
- In-kernel unit tests
- Geminilake improvements and color manager support
- Designware i2c fixes
- vblank evasion improvements
- Hotplug safe connector iterators
- GVT scheduler QoS support
- GVT Kabylake support
nouveau:
- Acceleration support for Pascal (GP10x).
- Rearchitecture of code handling proprietary signed firmware
- Fix GTX 970 with odd MMU configuration
- GP10B support
- GP107 acceleration support
vmwgfx:
- Atomic modesetting support for vmwgfx
omapdrm:
- Support for render nodes
- Refactor omapdss code
- Fix some probe ordering issues
- Fix too dark RGB565 rendering
sunxi:
- prelim rework for multiple pipes.
mali-dp:
- Color management support
- Plane scaling
- Power management improvements
imx-drm:
- Prefetch Resolve Engine/Gasket on i.MX6QP
- Deferred plane disabling
- Separate alpha support
mediatek:
- Mediatek SoC MT2701 support
rcar-du:
- Gen3 HDMI support
msm:
- 4k support for newer chips
- OPP bindings for gpu
- prep work for per-process pagetables
vc4:
- HDMI audio support
- fixes
qxl:
- minor fixes.
dw-hdmi:
- PHY improvements
- CSC fixes
- Amlogic GX SoC support"
* tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux: (1778 commits)
drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection
drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr()
drm/nouveau/kms: Increase max retries in scanout position queries.
drm/nouveau/bios/bitP: check that table is long enough for optional pointers
drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine
drm: mali-dp: use div_u64 for expensive 64-bit divisions
drm/i915: Confirm the request is still active before adding it to the await
drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio
drm/i915/selftests: Allocate inode/file dynamically
drm/i915: Fix system hang with EI UP masked on Haswell
drm/i915: checking for NULL instead of IS_ERR() in mock selftests
drm/i915: Perform link quality check unconditionally during long pulse
drm/i915: Fix use after free in lpe_audio_platdev_destroy()
drm/i915: Use the right mapping_gfp_mask for final shmem allocation
drm/i915: Make legacy cursor updates more unsynced
drm/i915: Apply a cond_resched() to the saturated signaler
drm/i915: Park the signaler before sleeping
drm: mali-dp: Check the mclk rate and allow up/down scaling
drm: mali-dp: Enable image enhancement when scaling
drm: mali-dp: Add plane upscaling support
...
gcc warns that an empty device tree would cause undefined behavior:
drivers/of/unittest.c: In function 'of_unittest':
drivers/of/unittest.c:2199:25: warning: 'last_sibling' may be used uninitialized in this function [-Wmaybe-uninitialized]
This adds an initialization of the variable to zero, which we handle
correctly.
Fixes: 81d0848fc8 ("of: Add unit tests for applying overlays")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Herring <robh@kernel.org>
We get a link error when the new tests are used by overlays
are not:
drivers/of/built-in.o: In function `unflatten_device_tree':
(.init.text+0x967): undefined reference to `unittest_unflatten_overlay_base'
This makes the #ifdef check match the symbols that lead to building
the unittest_unflatten_overlay_base function.
Fixes: 81d0848fc8 ("of: Add unit tests for applying overlays")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Frank Rowand <frank.rowand@sony.com>
Tested-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Existing overlay unit tests examine individual pieces of the overlay
code. The new tests target the entire process of applying an overlay.
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Some boards [1] leave the PHYs at an invalid state
during system power-up or reset thus causing unreliability
issues with the PHY which manifests as PHY not being detected
or link not functional. To fix this, these PHYs need to be RESET
via a GPIO connected to the PHY's RESET pin.
Some boards have a single GPIO controlling the PHY RESET pin of all
PHYs on the bus whereas some others have separate GPIOs controlling
individual PHY RESETs.
In both cases, the RESET de-assertion cannot be done in the PHY driver
as the PHY will not probe till its reset is de-asserted.
So do the RESET de-assertion in the MDIO bus driver.
[1] - am572x-idk, am571x-idk, a437x-idk
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Failures to look up an IOMMU when parsing the DT iommus property need to
be handled separately from the .of_xlate() failures to support deferred
probing.
The lack of a registered IOMMU can be caused by the lack of a driver for
the IOMMU, the IOMMU device probe not having been performed yet, having
been deferred, or having failed.
The first case occurs when the device tree describes the bus master and
IOMMU topology correctly but no device driver exists for the IOMMU yet
or the device driver has not been compiled in. Return NULL, the caller
will configure the device without an IOMMU.
The second and third cases are handled by deferring the probe of the bus
master device which will eventually get reprobed after the IOMMU.
The last case is currently handled by deferring the probe of the bus
master device as well. A mechanism to either configure the bus master
device without an IOMMU or to fail the bus master device probe depending
on whether the IOMMU is optional or mandatory would be a good
enhancement.
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Laurent Pichart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Configuring DMA ops at probe time will allow deferring device probe when
the IOMMU isn't available yet. The dma_configure for the device is
now called from the generic device_attach callback just before the
bus/driver probe is called. This way, configuring the DMA ops for the
device would be called at the same place for all bus_types, hence the
deferred probing mechanism should work for all buses as well.
pci_bus_add_devices (platform/amba)(_device_create/driver_register)
| |
pci_bus_add_device (device_add/driver_register)
| |
device_attach device_initial_probe
| |
__device_attach_driver __device_attach_driver
|
driver_probe_device
|
really_probe
|
dma_configure
Similarly on the device/driver_unregister path __device_release_driver is
called which inturn calls dma_deconfigure.
This patch changes the dma ops configuration to probe time for
both OF and ACPI based platform/amba/pci bus devices.
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci part)
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Size of the dma-range is calculated as coherent_dma_mask + 1
and passed to arch_setup_dma_ops further. It overflows when
the coherent_dma_mask is set for full 64 bits 0xFFFFFFFFFFFFFFFF,
resulting in size getting passed as 0 wrongly. Fix this by
passsing in max(mask, mask + 1). Note that in this case
when the mask is set to full 64bits, we will be passing the mask
itself to arch_setup_dma_ops instead of the size. The real fix
for this should be to make arch_setup_dma_ops receive the
mask and handle it, to be done in the future.
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
As part of moving DMA initializing to probe time the
of_dma_deconfigure() function will need to be called from different
source files. Make it public and move it to drivers/of/device.c where
the of_dma_configure() function is.
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The call to of_find_node_by_path("/cpus") returns the cpus device_node
with its reference count incremented. There is no matching of_node_put()
call in of_numa_parse_cpu_nodes() which results in a leaked reference
to the "/cpus" node.
This patch adds an of_node_put() to release the reference.
fixes: 298535c00a ("of, numa: Add NUMA of binding implementation.")
Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Acked-by: David Daney <david.daney@cavium.com>
Cc: stable@vger.kernel.org # v4.7+
Signed-off-by: Rob Herring <robh@kernel.org>
There is of_property_read_u32_index but no u64 variant. This patch
adds one similar to the u32 version for u64.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The modalias sysfs attr is lacking a newline for DT aliases on platform
devices. The macio and ibmebus correctly add the newline, but open code it.
Introduce a new function, of_device_modalias(), that fills the buffer with
the modalias including the newline and update users of the old
of_device_get_modalias function.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the length of the modalias is greater than the buffer size, then the
modalias is truncated. However the untruncated length is returned which
will cause an error. Fix this to return the truncated length. If an error
in the case was desired, then then we should just return -ENOMEM.
The reality is no device will ever have 4KB of compatible strings to hit
this case.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
All users of the small MSI controller API have been migrated to use the
generic MSI infrastructure instead. We no longer need a global chained list
of msi_controller. Instead, MSI controllers are now represented as IRQ
domains attached to OF nodes, and the resolution between a device
requesting an MSI and the corresponding MSI controller is done by the
generic interrupt resolution logic.
Therefore, this API is now completely useless, and can be removed from the
kernel.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
First slice of drm-misc-next for 4.12:
Core/subsystem-wide:
- link status core patch from Manasi, for signalling link train fail
to userspace. I also had the i915 patch in here, but that had a
small buglet in our CI, so reverted.
- more debugfs_remove removal from Noralf, almost there now (Noralf
said he'll try to follow up with the stragglers).
- drm todo moved into kerneldoc, for better visibility (see
Documentation/gpu/todo.rst), lots of starter tasks in there.
- devm_ of helpers + use it in sti (from Ben Gaignard, acked by Rob
Herring)
- extended framebuffer fbdev support (for fbdev flipping), and vblank
wait ioctl fbdev support (Maxime Ripard)
- misc small things all over, as usual
- add vblank callbacks to drm_crtc_funcs, plus make lots of good use
of this to simplify drivers (Shawn Guo)
- new atomic iterator macros to unconfuse old vs. new state
Small drivers:
- vc4 improvements from Eric
- vc4 kerneldocs (Eric)!
- tons of improvements for dw-mipi-dsi in rockchip from John Keeping
and Chris Zhong.
- MAINTAINERS entries for drivers managed in drm-misc. It's not yet
official, still an experiment, but definitely not complete fail and
better to avoid confusion. We kinda screwed that up with drm-misc a
bit when we started committers last year.
- qxl atomic conversion (Gabriel Krisman)
- bunch of virtual driver polish (qxl, virgl, ...)
- misc tiny patches all over
This is the first time we've done the same merge-window blackout for
drm-misc as we've done for drm-intel for ages, hence why we have a
_lot_ of stuff queued already. But it's still only half of drm-intel
(room to grow!), and the drivers in drm-misc experiment seems to work
at least insofar as that you also get lots of driver updates here
alredy.
* tag 'drm-misc-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-misc: (141 commits)
drm/vc4: Fix OOPSes from trying to cache a partially constructed BO.
drm/vc4: Fulfill user BO creation requests from the kernel BO cache.
Revert "drm/i915: Implement Link Rate fallback on Link training failure"
drm/fb-helper: implement ioctl FBIO_WAITFORVSYNC
drm: Update drm_fbdev_cma_init documentation
drm/rockchip/dsi: add dw-mipi power domain support
drm/rockchip/dsi: fix insufficient bandwidth of some panel
dt-bindings: add power domain node for dw-mipi-rockchip
drm/rockchip/dsi: remove mode_valid function
drm/rockchip/dsi: dw-mipi: correct the coding style
drm/rockchip/dsi: dw-mipi: support RK3399 mipi dsi
dt-bindings: add rk3399 support for dw-mipi-rockchip
drm/rockchip: dw-mipi-dsi: add reset control
drm/rockchip: dw-mipi-dsi: support non-burst modes
drm/rockchip: dw-mipi-dsi: defer probe if panel is not loaded
drm/rockchip: vop: test for P{H,V}SYNC
drm/rockchip: dw-mipi-dsi: use positive check for N{H, V}SYNC
drm/rockchip: dw-mipi-dsi: use specific poll helper
drm/rockchip: dw-mipi-dsi: improve PLL configuration
drm/rockchip: dw-mipi-dsi: properly configure PHY timing
...
Lots of calls to of_platform_populate() are not unbalanced by a call
to of_platform_depopulate(). This create issues while drivers are
bind/unbind.
In way to solve those issues is to add devm_of_platform_populate()
which will call of_platform_depopulate() when the device is unbound
from the bus.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1487952874-23635-2-git-send-email-benjamin.gaignard@linaro.org
- Sync dtc to upstream commit 0931cea3ba20. This picks up overlay
support in dtc.
- Set dma_ops for reserved memory users.
- Make references to IOMMU consistent in DT bindings.
- Cleanup references to pm_power_off in bindings.
- Move some display bindings that snuck into the old bindings/video/
path.
- Fix some wrong documentation paths caused from binding restructuring.
- Vendor prefixes for Faraday and Fujitsu.
- Fix an of_node ref counting leak in of_find_node_opts_by_path
- Introduce new graph helper of_graph_get_remote_node() which will be
used by DRM drivers in 4.12.
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Merge tag 'devicetree-for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
"Pretty standard stuff with dtc upstream sync being the biggest piece.
- Sync dtc to upstream commit 0931cea3ba20. This picks up overlay
support in dtc.
- Set dma_ops for reserved memory users.
- Make references to IOMMU consistent in DT bindings.
- Cleanup references to pm_power_off in bindings.
- Move some display bindings that snuck into the old bindings/video/
path.
- Fix some wrong documentation paths caused from binding
restructuring.
- Vendor prefixes for Faraday and Fujitsu.
- Fix an of_node ref counting leak in of_find_node_opts_by_path
- Introduce new graph helper of_graph_get_remote_node() which will be
used by DRM drivers in 4.12"
* tag 'devicetree-for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (27 commits)
DT: add Faraday Tec. as vendor
of: introduce of_graph_get_remote_node
of: Add missing space at end of pr_fmt().
of: make of_device_make_bus_id() static
of: fix of_node leak caused in of_find_node_opts_by_path
dt-bindings: net: remove reference to fixed link support
dt-bindings: power: reset: qnap-poweroff: Drop reference to pm_power_off
dt-bindings: power: reset: gpio-poweroff: Drop reference to pm_power_off
dt-bindings: mfd: as3722: Drop reference to pm_power_off
dt-bindings: display: move ANX7814 and SiI8620 bridge bindings
of/unittest: Swap arguments of of_unittest_apply_overlay()
Documentation: usb: fix wrong documentation paths
serial: fsl-imx-uart.txt: Remove generic property
devicetree: Add Fujitsu Ltd. vendor prefix
Documentation: display: fix wrong documentation paths
of: remove redundant memset in overlay
bus:qcom : Fix typo in qcom,ebi2.txt
dt-bindings: qman: Remove pool channel node
Documentation: panel-dpi: fix path to display-timing.txt
devicetree: bindings: clk: mvebu: fix description for sata1 on Armada XP
...
Here is the big USB and PHY driver updates for 4.11-rc1.
Nothing major, just the normal amount of churn in the usb gadget and dwc
and xhci controllers, new device ids, new phy drivers, a new usb-serial
driver, and a few other minor changes in different USB drivers.
All have been in linux-next for a long time with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big USB and PHY driver updates for 4.11-rc1.
Nothing major, just the normal amount of churn in the usb gadget and
dwc and xhci controllers, new device ids, new phy drivers, a new
usb-serial driver, and a few other minor changes in different USB
drivers.
All have been in linux-next for a long time with no reported issues"
* tag 'usb-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (265 commits)
usb: cdc-wdm: remove logically dead code
USB: serial: keyspan: drop header file
USB: serial: io_edgeport: drop io-tables header file
usb: musb: add code comment for clarification
usb: misc: add USB251xB/xBi Hi-Speed Hub Controller Driver
usb: misc: usbtest: remove redundant check on retval < 0
USB: serial: upd78f0730: sort device ids
USB: serial: upd78f0730: add ID for EVAL-ADXL362Z
ohci-hub: fix typo in dbg_port macro
usb: musb: dsps: Manage CPPI 4.1 DMA interrupt in DSPS
usb: musb: tusb6010: Clean up tusb_omap_dma structure
usb: musb: cppi_dma: Clean up cppi41_dma_controller structure
usb: musb: cppi_dma: Clean up cppi structure
usb: musb: cppi41: Detect aborted transfers in cppi41_dma_callback()
usb: musb: dma: Add a DMA completion platform callback
drivers: usb: usbip: Add missing break statement to switch
usb: mtu3: remove redundant dev_err call in get_ssusb_rscs()
USB: serial: mos7840: fix another NULL-deref at open
USB: serial: console: clean up sanity checks
USB: serial: console: fix uninitialised spinlock
...
- Errata workarounds for Qualcomm's Falkor CPU
- Qualcomm L2 Cache PMU driver
- Qualcomm SMCCC firmware quirk
- Support for DEBUG_VIRTUAL
- CPU feature detection for userspace via MRS emulation
- Preliminary work for the Statistical Profiling Extension
- Misc cleanups and non-critical fixes
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
- Errata workarounds for Qualcomm's Falkor CPU
- Qualcomm L2 Cache PMU driver
- Qualcomm SMCCC firmware quirk
- Support for DEBUG_VIRTUAL
- CPU feature detection for userspace via MRS emulation
- Preliminary work for the Statistical Profiling Extension
- Misc cleanups and non-critical fixes
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (74 commits)
arm64/kprobes: consistently handle MRS/MSR with XZR
arm64: cpufeature: correctly handle MRS to XZR
arm64: traps: correctly handle MRS/MSR with XZR
arm64: ptrace: add XZR-safe regs accessors
arm64: include asm/assembler.h in entry-ftrace.S
arm64: fix warning about swapper_pg_dir overflow
arm64: Work around Falkor erratum 1003
arm64: head.S: Enable EL1 (host) access to SPE when entered at EL2
arm64: arch_timer: document Hisilicon erratum 161010101
arm64: use is_vmalloc_addr
arm64: use linux/sizes.h for constants
arm64: uaccess: consistently check object sizes
perf: add qcom l2 cache perf events driver
arm64: remove wrong CONFIG_PROC_SYSCTL ifdef
ARM: smccc: Update HVC comment to describe new quirk parameter
arm64: do not trace atomic operations
ACPI/IORT: Fix the error return code in iort_add_smmu_platform_device()
ACPI/IORT: Fix iort_node_get_id() mapping entries indexing
arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA
perf: xgene: Include module.h
...
Pull networking updates from David Miller:
"Highlights:
1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini
Varadhan.
2) Simplify classifier state on sk_buff in order to shrink it a bit.
From Willem de Bruijn.
3) Introduce SIPHASH and it's usage for secure sequence numbers and
syncookies. From Jason A. Donenfeld.
4) Reduce CPU usage for ICMP replies we are going to limit or
suppress, from Jesper Dangaard Brouer.
5) Introduce Shared Memory Communications socket layer, from Ursula
Braun.
6) Add RACK loss detection and allow it to actually trigger fast
recovery instead of just assisting after other algorithms have
triggered it. From Yuchung Cheng.
7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot.
8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert.
9) Export MPLS packet stats via netlink, from Robert Shearman.
10) Significantly improve inet port bind conflict handling, especially
when an application is restarted and changes it's setting of
reuseport. From Josef Bacik.
11) Implement TX batching in vhost_net, from Jason Wang.
12) Extend the dummy device so that VF (virtual function) features,
such as configuration, can be more easily tested. From Phil
Sutter.
13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric
Dumazet.
14) Add new bpf MAP, implementing a longest prefix match trie. From
Daniel Mack.
15) Packet sample offloading support in mlxsw driver, from Yotam Gigi.
16) Add new aquantia driver, from David VomLehn.
17) Add bpf tracepoints, from Daniel Borkmann.
18) Add support for port mirroring to b53 and bcm_sf2 drivers, from
Florian Fainelli.
19) Remove custom busy polling in many drivers, it is done in the core
networking since 4.5 times. From Eric Dumazet.
20) Support XDP adjust_head in virtio_net, from John Fastabend.
21) Fix several major holes in neighbour entry confirmation, from
Julian Anastasov.
22) Add XDP support to bnxt_en driver, from Michael Chan.
23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan.
24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi.
25) Support GRO in IPSEC protocols, from Steffen Klassert"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits)
Revert "ath10k: Search SMBIOS for OEM board file extension"
net: socket: fix recvmmsg not returning error from sock_error
bnxt_en: use eth_hw_addr_random()
bpf: fix unlocking of jited image when module ronx not set
arch: add ARCH_HAS_SET_MEMORY config
net: napi_watchdog() can use napi_schedule_irqoff()
tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"
net/hsr: use eth_hw_addr_random()
net: mvpp2: enable building on 64-bit platforms
net: mvpp2: switch to build_skb() in the RX path
net: mvpp2: simplify MVPP2_PRS_RI_* definitions
net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT
net: mvpp2: remove unused register definitions
net: mvpp2: simplify mvpp2_bm_bufs_add()
net: mvpp2: drop useless fields in mvpp2_bm_pool and related code
net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue'
net: mvpp2: release reference to txq_cpu[] entry after unmapping
net: mvpp2: handle too large value in mvpp2_rx_time_coal_set()
net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set()
net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set
...
Some Cavium dev boards have firmware which doesn't supply a proper
ethernet-phy-ieee802.3-c22" compatible property. Restore these boards
to working order by whitelisting this compatible value.
Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The OF graph API leaves too much of the graph walking to clients when
in many cases the driver doesn't care about accessing the port or
endpoint nodes. The drivers typically just want the device connected via
a particular graph connection. of_graph_get_remote_node provides this
functionality.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Make pr_fmt() in fdt.c consistent with all other files in drivers/of/
Signed-off-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
of_device_make_bus_id() was changed to non-static by commit c660122538
("of/device: Make of_device_make_bus_id() usable by other code") more than
6 years ago, but there are no users of it outside of platform.c. Make the
function static again.
Signed-off-by: Frank Rowand <frank.rowand@am.sony.com>
Signed-off-by: Rob Herring <robh@kernel.org>
During stepping down the tree, parent node is gotten first and its refcount is
increased with of_node_get() in __of_get_next_child(). Since it just being used
as tmp node, its refcount must be decreased with of_node_put() after traversing
its child nodes.
Or, its refcount will never be descreased to ZERO, then it will never be freed,
as well as other related memory blocks.
To fix this, decrease refcount of parent with of_node_put() after
__of_find_node_by_path().
Signed-off-by: Qi Hou <qi.hou@windriver.com>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Rob Herring <robh@kernel.org>
Function signature
of_unittest_apply_overlay(int unittest_nr, int overlay_nr, ...
and call sites, like in of_unittest_apply_overlay_check():
ret = of_unittest_apply_overlay(overlay_nr, unittest_nr, ...
do not match. Fix this in one place (function signature).
The only affected test case is 15, which supplies non-existing
overlay number 16, but two bugs matched here. Fix the test case.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
The ULPI bus can be built as a module, and it will soon be
calling these functions when it supports probing devices from DT.
Export them so they can be used by the ULPI module.
Acked-by: Rob Herring <robh@kernel.org>
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
In the case of ULPI devices, we want to be able to load the
driver before registering the device so that we don't get stuck
in a loop waiting for the phy module to appear and failing usb
controller probe. Currently we request the ulpi module via the
ulpi ids, but in the DT case we might need to request it with the
OF based modalias instead. Add a common function that allows
anyone to request a module with the OF based modalias.
Acked-by: Rob Herring <robh@kernel.org>
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
It is useful to have helper function just to get the number of cache
levels for a given logical cpu. We can obtain the same by just checking
the level at which the last cache is present. This patch adds support
to find the level of the last cache for a given cpu.
It will be used on ARM64 platform where the device tree provides the
information for the additional non-architected/transparent/external
last level caches that are not integrated with the processors.
Cc: Mark Rutland <mark.rutland@arm.com>
Suggested-by: Rob Herring <robh+dt@kernel.org>
Acked-by: Rob Herring <robh+dt@kernel.org>
Tested-by: Tan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
[will: use u32 instead of int for cache_level]
Signed-off-by: Will Deacon <will.deacon@arm.com>
memset in of_build_overlay_info is redundant, the ovinfo has been
zeroed in of_fill_overlay_info when error.
Signed-off-by: YiPing Xu <xuyiping@hisilicon.com>
Signed-off-by: Rob Herring <robh@kernel.org>
On PowerPC machines some PCI slots might not have level triggered
interrupts capability (also know as level signaled interrupts),
leading of_irq_parse_pci() to complain by presenting error messages
on the kernel log - in this case, the properties "interrupt-map" and
"interrupt-map-mask" are not present on device's node in the device
tree.
This patch introduces a different message for this specific case,
and also reduces its level from error to warning. Besides, we warn
(once) that possibly some PCI slots on the system have no level
triggered interrupts available.
We changed some error return codes too on function of_irq_parse_raw()
in order other failure's cases can be presented in a more precise way.
Before this patch, when an adapter was plugged in a slot without level
interrupts capabilitiy on PowerPC, we saw a generic error message
like this:
[54.239] pci 002d:70:00.0: of_irq_parse_pci() failed with rc=-22
Now, with this applied, we see the following specific message:
[16.154] pci 0014:60:00.1: of_irq_parse_pci: no interrupt-map found,
INTx interrupts not available
Finally, we standardize the error path in of_irq_parse_raw() by always
taking the fail path instead of returning directly from the loop.
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
For some IPs, there may be virtual child devices created and for them its
necessary to set the dma_ops if it's using reserved memory else it will call
the dummy dma_ops during buffer operations for the child devices which will
lead to memory mapping failure.
Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Rob Herring <robh@kernel.org>
When allocating a struct alias_prop, of_alias_scan() only requested that
it be aligned on a 4 byte boundary. The struct contains pointers which
leads to us attempting 64 bit writes on 64 bit systems, and if the CPU
doesn't support unaligned memory accesses then this causes problems -
for example on some MIPS64r2 CPUs including the "mips64r2-generic" QEMU
emulated CPU it will trigger an address error exception.
Fix this by requesting alignment for the struct alias_prop allocation
matching that which the compiler expects, using the __alignof__ keyword.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14306/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
An empty __dtb_start to __dtb_end section might result in
initial_boot_params being null for arch/mips/ralink. This showed that the
boot process hangs indefinitely in of_scan_flat_dt().
Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14605/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Merge tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"PCI changes:
- add support for PCI on ARM64 boxes with ACPI. We already had this
for theoretical spec-compliant hardware; now we're adding quirks
for the actual hardware (Cavium, HiSilicon, Qualcomm, X-Gene)
- add runtime PM support for hotplug ports
- enable runtime suspend for Intel UHCI that uses platform-specific
wakeup signaling
- add yet another host bridge registration interface. We hope this is
extensible enough to subsume the others
- expose device revision in sysfs for DRM
- to avoid device conflicts, make sure any VF BAR updates are done
before enabling the VF
- avoid unnecessary link retrains for ASPM
- allow INTx masking on Mellanox devices that support it
- allow access to non-standard VPD for Chelsio devices
- update Broadcom iProc support for PAXB v2, PAXC v2, inbound DMA,
etc
- update Rockchip support for max-link-speed
- add NVIDIA Tegra210 support
- add Layerscape LS1046a support
- update R-Car compatibility strings
- add Qualcomm MSM8996 support
- remove some uninformative bootup messages"
* tag 'pci-v4.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (115 commits)
PCI: Enable access to non-standard VPD for Chelsio devices (cxgb3)
PCI: Expand "VPD access disabled" quirk message
PCI: pciehp: Remove loading message
PCI: hotplug: Remove hotplug core message
PCI: Remove service driver load/unload messages
PCI/AER: Log AER IRQ when claiming Root Port
PCI/AER: Log errors with PCI device, not PCIe service device
PCI/AER: Remove unused version macros
PCI/PME: Log PME IRQ when claiming Root Port
PCI/PME: Drop unused support for PMEs from Root Complex Event Collectors
PCI: Move config space size macros to pci_regs.h
x86/platform/intel-mid: Constify mid_pci_platform_pm
PCI/ASPM: Don't retrain link if ASPM not possible
PCI: iproc: Skip check for legacy IRQ on PAXC buses
PCI: pciehp: Leave power indicator on when enabling already-enabled slot
PCI: pciehp: Prioritize data-link event over presence detect
PCI: rcar: Add gen3 fallback compatibility string for pcie-rcar
PCI: rcar: Use gen2 fallback compatibility last
PCI: rcar-gen2: Use gen2 fallback compatibility last
PCI: rockchip: Move the deassert of pm/aclk/pclk after phy_init()
..
- Add various vendor prefixes.
- Fix NUMA node handling when "numa=off" is passed on kernel command
line.
- Coding style Clean-up of overlay handling code.
- DocBook fixes in DT platform driver code
- Altera SoCFPGA binding addtions for freeze bridge, arria10 FPGA
manager and FPGA bridges.
- Couple of printk message fixes.
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Merge tag 'devicetree-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring:
- add various vendor prefixes.
- fix NUMA node handling when "numa=off" is passed on kernel command
line.
- coding style Clean-up of overlay handling code.
- DocBook fixes in DT platform driver code
- Altera SoCFPGA binding addtions for freeze bridge, arria10 FPGA
manager and FPGA bridges.
- a couple of printk message fixes.
* tag 'devicetree-for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (33 commits)
dt: pwm: bcm2835: fix typo in clocks property name
devicetree: add vendor prefix for National Instruments
Revert "of: base: add support to get machine model name"
of: Fix issue where code would fall through to error case.
drivers/of: fix missing pr_cont()s in of_print_phandle_args
devicetree: bindings: Add vendor prefix for Oki
devicetree: bindings: Add vendor prefix for Andes Technology Corporation
dt-bindings: add MYIR Tech hardware vendor prefix
add bindings document for altera freeze bridge
ARM: socfpga: add bindings doc for arria10 fpga manager
ARM: socfpga: add bindings document for fpga bridge drivers
of: base: add support to get machine model name
of/platform: clarify of_find_device_by_node refcounting
of/platform: fix of_platform_device_destroy comment
of: Remove unused variable overlay_symbols
of: Move setting of pointer to beside test for non-null
of: Add back an error message, restructured
of: Update comments to reflect changes and increase clarity
of: Remove redundant size check
of: Update structure of code to be clearer, also remove BUG_ON()
...
Linus Torvalds