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These are bits so to test if a pad is a sink you use & but not ==.
It looks like the only reason this hasn't caused problems before is that
media_get_pad_index() is currently only used with pads that do not set the
MEDIA_PAD_FL_MUST_CONNECT flag. So a pad really had only the SINK or SOURCE
flag set and nothing else.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: <stable@vger.kernel.org> # for v5.3 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The topology that v4l2_m2m_register_media_controller() creates for a
processing block actually created a source-to-source link and a sink-to-sink
link instead of two source-to-sink links.
Unfortunately v4l2-compliance never checked for such bad links, so this
went unreported for quite some time.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: Nicolas Dufresne <nicolas@ndufresne.ca>
Cc: <stable@vger.kernel.org> # for v4.19 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Only ARGB32-type pixelformat were assumed to have 4 components, which is
wrong since RGB32-type pixelformats may have an alpha channel, so they
should also assume 4 color components.
The XRGB32-type pixelformats really have only 3 color components, but this
complicated matters since that creates strides that are sometimes width * 3
and sometimes width * 4, and in fact this can result in buffer overflows.
Keep things simple by just always processing all 4 color components.
In the future we might want to optimize this again for the XRGB32-type
pixelformats, but for now keep it simple and robust.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: <stable@vger.kernel.org> # for v5.4 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The serio_close() call was moved to pulse8_cec_adap_free(),
but that can be too late if that is called after the serio
core pulled down the serio already, in which case you get
a kernel oops.
Keep it in the disconnect().
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Fixes: 601282d65b96 ("media: pulse8-cec: use adap_free callback")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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If earlier in the connect() an error occurred, then pulse8_cec_adap_free
was called by cec_delete_adapter, and that free function tried to
cancel the ping_eeprom_work workqueue, but that workqueue hasn't
been initialized yet, resulting in a kernel warning.
Move the initialization of that workqueue up to where the other
workqueues are initialized.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Fixes: 601282d65b96 ("media: pulse8-cec: use adap_free callback")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux
Pull chrome platform updates from Benson Leung:
"CrOS EC:
- Refactoring of some of cros_ec's headers:
include/linux/mfd/cros_ec.h now removed, new cros_ec.h added to
drivers/platform/chrome which contains shared operations of cros_ec
transport drivers.
- Response tracing in cros_ec_proto
Wilco EC:
- Fix unregistration order.
- Fix keyboard backlight probing on systems without keyboard
backlight
- Minor cleanup (newlines in printks, COMPILE_TEST)
Misc:
- chromeos_laptop converted to use i2c_new_scanned_device instead of
i2c_new_probed_device"
* tag 'tag-chrome-platform-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux:
platform/chrome: cros_ec: Match implementation with headers
platform/chrome: cros_ec: Drop unaligned.h include
platform/chrome: wilco_ec: Allow wilco to be compiled in COMPILE_TEST
platform/chrome: wilco_ec: Add newlines to printks
platform/chrome: wilco_ec: Fix unregistration order
cros_ec: treewide: Remove 'include/linux/mfd/cros_ec.h'
platform/chrome: cros_ec_ishtp: Make init_lock static
platform/chrome: chromeos_laptop: Convert to i2c_new_scanned_device
platform/chrome: cros_ec_lpc: Use platform_get_irq_optional() for optional IRQs
platform/chrome: cros_ec_proto: Add response tracing
platform/chrome: cros_ec_trace: Match trace commands with EC commands
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- New staging driver for Rockship ISPv1 unit
- New staging driver for Rockchip MIPI Synopsys DPHY RX0
- y2038 fixes at V4L2 API (backward-compatible)
- A dvb core fix when receiving invalid EIT sections
- Some clang-specific warnings got fixed
- Added support for touch V4L2 interface at vivid
- Several drivers were converted to use the new
i2c_new_scanned_device() kAPI
- Added sm1 support at meson's vdec driver
- Several other driver cleanups, fixes and improvements
* tag 'media/v5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (207 commits)
media: staging/intel-ipu3: remove TODO item about acronyms
media: v4l2-fwnode: Print the node name while parsing endpoints
media: Revert "media: staging/intel-ipu3: make imgu use fixed running mode"
media: mt9v111: constify copied structure
media: platform: VIDEO_MEDIATEK_JPEG can also depend on MTK_IOMMU
media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value
media: uvcvideo: Avoid cyclic entity chains due to malformed USB descriptors
media: hantro: fix post-processing NULL pointer dereference
media: rcar-vin: Use correct pixel format when aligning format
media: MAINTAINERS: add entry for Rockchip ISP1 driver
media: staging: rkisp1: add TODO file for staging
media: staging: rkisp1: add document for rkisp1 meta buffer format
media: staging: rkisp1: add output device for parameters
media: staging: rkisp1: add capture device for statistics
media: staging: rkisp1: add user space ABI definitions
media: staging: rkisp1: add streaming paths
media: staging: rkisp1: add Rockchip ISP1 base driver
media: staging: phy-rockchip-dphy-rx0: add Rockchip MIPI Synopsys DPHY RX0 driver
media: staging: dt-bindings: add Rockchip MIPI RX D-PHY RX0 yaml bindings
media: staging: dt-bindings: add Rockchip ISP1 yaml bindings
...
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Pull updates from Andrew Morton:
"Most of -mm and quite a number of other subsystems: hotfixes, scripts,
ocfs2, misc, lib, binfmt, init, reiserfs, exec, dma-mapping, kcov.
MM is fairly quiet this time. Holidays, I assume"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
kcov: ignore fault-inject and stacktrace
include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc()
execve: warn if process starts with executable stack
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
init/main.c: fix misleading "This architecture does not have kernel memory protection" message
init/main.c: fix quoted value handling in unknown_bootoption
init/main.c: remove unnecessary repair_env_string in do_initcall_level
init/main.c: log arguments and environment passed to init
fs/binfmt_elf.c: coredump: allow process with empty address space to coredump
fs/binfmt_elf.c: coredump: delete duplicated overflow check
fs/binfmt_elf.c: coredump: allocate core ELF header on stack
fs/binfmt_elf.c: make BAD_ADDR() unlikely
fs/binfmt_elf.c: better codegen around current->mm
fs/binfmt_elf.c: don't copy ELF header around
fs/binfmt_elf.c: fix ->start_code calculation
fs/binfmt_elf.c: smaller code generation around auxv vector fill
lib/find_bit.c: uninline helper _find_next_bit()
lib/find_bit.c: join _find_next_bit{_le}
uapi: rename ext2_swab() to swab() and share globally in swab.h
lib/scatterlist.c: adjust indentation in __sg_alloc_table
...
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In order to provide a clearer, more symmetric API for pinning and
unpinning DMA pages. This way, pin_user_pages*() calls match up with
unpin_user_pages*() calls, and the API is a lot closer to being
self-explanatory.
Link: http://lkml.kernel.org/r/20200107224558.2362728-23-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1. Change v4l2 from get_user_pages() to pin_user_pages().
2. Because all FOLL_PIN-acquired pages must be released via
put_user_page(), also convert the put_page() call over to
put_user_pages_dirty_lock().
Link: http://lkml.kernel.org/r/20200107224558.2362728-19-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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After DMA is complete, and the device and CPU caches are synchronized,
it's still required to mark the CPU pages as dirty, if the data was
coming from the device. However, this driver was just issuing a bare
put_page() call, without any set_page_dirty*() call.
Fix the problem, by calling set_page_dirty_lock() if the CPU pages were
potentially receiving data from the device.
Link: http://lkml.kernel.org/r/20200107224558.2362728-11-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: <stable@vger.kernel.org>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull drm updates from Davbe Airlie:
"This is the main pull request for graphics for 5.6. Usual selection of
changes all over.
I've got one outstanding vmwgfx pull that touches mm so kept it
separate until after all of this lands. I'll try and get it to you
soon after this, but it might be early next week (nothing wrong with
code, just my schedule is messy)
This also hits a lot of fbdev drivers with some cleanups.
Other notables:
- vulkan timeline semaphore support added to syncobjs
- nouveau turing secureboot/graphics support
- Displayport MST display stream compression support
Detailed summary:
uapi:
- dma-buf heaps added (and fixed)
- command line add support for panel oreientation
- command line allow overriding penguin count
drm:
- mipi dsi definition updates
- lockdep annotations for dma_resv
- remove dma-buf kmap/kunmap support
- constify fb_ops in all fbdev drivers
- MST fix for daisy chained hotplug-
- CTA-861-G modes with VIC >= 193 added
- fix drm_panel_of_backlight export
- LVDS decoder support
- more device based logging support
- scanline alighment for dumb buffers
- MST DSC helpers
scheduler:
- documentation fixes
- job distribution improvements
panel:
- Logic PD type 28 panel support
- Jimax8729d MIPI-DSI
- igenic JZ4770
- generic DSI devicetree bindings
- sony acx424AKP panel
- Leadtek LTK500HD1829
- xinpeng XPP055C272
- AUO B116XAK01
- GiantPlus GPM940B0
- BOE NV140FHM-N49
- Satoz SAT050AT40H12R2
- Sharp LS020B1DD01D panels.
ttm:
- use blocking WW lock
i915:
- hw/uapi state separation
- Lock annotation improvements
- selftest improvements
- ICL/TGL DSI VDSC support
- VBT parsing improvments
- Display refactoring
- DSI updates + fixes
- HDCP 2.2 for CFL
- CML PCI ID fixes
- GLK+ fbc fix
- PSR fixes
- GEN/GT refactor improvments
- DP MST fixes
- switch context id alloc to xarray
- workaround updates
- LMEM debugfs support
- tiled monitor fixes
- ICL+ clock gating programming removed
- DP MST disable sequence fixed
- LMEM discontiguous object maps
- prefaulting for discontiguous objects
- use LMEM for dumb buffers if possible
- add LMEM mmap support
amdgpu:
- enable sync object timelines for vulkan
- MST atomic routines
- enable MST DSC support
- add DMCUB display microengine support
- DC OEM i2c support
- Renoir DC fixes
- Initial HDCP 2.x support
- BACO support for Arcturus
- Use BACO for runtime PM power save
- gfxoff on navi10
- gfx10 golden updates and fixes
- DCN support on POWER
- GFXOFF for raven1 refresh
- MM engine idle handlers cleanup
- 10bpc EDP panel fixes
- renoir watermark fixes
- SR-IOV fixes
- Arcturus VCN fixes
- GDDR6 training fixes
- freesync fixes
- Pollock support
amdkfd:
- unify more codepath with amdgpu
- use KIQ to setup HIQ rather than MMIO
radeon:
- fix vma fault handler race
- PPC DMA fix
- register check fixes for r100/r200
nouveau:
- mmap_sem vs dma_resv fix
- rewrite the ACR secure boot code for Turing
- TU10x graphics engine support (TU11x pending)
- Page kind mapping for turing
- 10-bit LUT support
- GP10B Tegra fixes
- HD audio regression fix
hisilicon/hibmc:
- use generic fbdev code and helpers
rockchip:
- dsi/px30 support
virtio:
- fb damage support
- static some functions
vc4:
- use dma_resv lock wrappers
msm:
- use dma_resv lock wrappers
- sc7180 display + DSI support
- a618 support
- UBWC support improvements
vmwgfx:
- updates + new logging uapi
exynos:
- enable/disable callback cleanups
etnaviv:
- use dma_resv lock wrappers
atmel-hlcdc:
- clock fixes
mediatek:
- cmdq support
- non-smooth cursor fixes
- ctm property support
sun4i:
- suspend support
- A64 mipi dsi support
rcar-du:
- Color management module support
- LVDS encoder dual-link support
- R8A77980 support
analogic:
- add support for an6345
ast:
- atomic modeset support
- primary plane garbage fix
arcgpu:
- fixes for fourcc handling
tegra:
- minor fixes and improvments
mcde:
- vblank support
meson:
- OSD1 plane AFBC commit
gma500:
- add pageflip support
- reomve global drm_dev
komeda:
- tweak debugfs output
- d32 support
- runtime PM suppotr
udl:
- use generic shmem helpers
- cleanup and fixes"
* tag 'drm-next-2020-01-30' of git://anongit.freedesktop.org/drm/drm: (1998 commits)
drm/nouveau/fb/gp102-: allow module to load even when scrubber binary is missing
drm/nouveau/acr: return error when registering LSF if ACR not supported
drm/nouveau/disp/gv100-: not all channel types support reporting error codes
drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
drm/nouveau: support synchronous pushbuf submission
drm/nouveau: signal pending fences when channel has been killed
drm/nouveau: reject attempts to submit to dead channels
drm/nouveau: zero vma pointer even if we only unreference it rather than free
drm/nouveau: Add HD-audio component notifier support
drm/nouveau: fix build error without CONFIG_IOMMU_API
drm/nouveau/kms/nv04: remove set but not used variable 'width'
drm/nouveau/kms/nv50: remove set but not unused variable 'nv_connector'
drm/nouveau/mmu: fix comptag memory leak
drm/nouveau/gr/gp10b: Use gp100_grctx and gp100_gr_zbc
drm/nouveau/pmu/gm20b,gp10b: Fix Falcon bootstrapping
drm/exynos: Rename Exynos to lowercase
drm/exynos: change callback names
drm/mst: Don't do atomic checks over disabled managers
drm/amdgpu: add the lost mutex_init back
drm/amd/display: skip opp blank or unblank if test pattern enabled
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar:
"The main changes in this cycle were:
- Cleanup of the GOP [graphics output] handling code in the EFI stub
- Complete refactoring of the mixed mode handling in the x86 EFI stub
- Overhaul of the x86 EFI boot/runtime code
- Increase robustness for mixed mode code
- Add the ability to disable DMA at the root port level in the EFI
stub
- Get rid of RWX mappings in the EFI memory map and page tables,
where possible
- Move the support code for the old EFI memory mapping style into its
only user, the SGI UV1+ support code.
- plus misc fixes, updates, smaller cleanups.
... and due to interactions with the RWX changes, another round of PAT
cleanups make a guest appearance via the EFI tree - with no side
effects intended"
* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
efi/x86: Disable instrumentation in the EFI runtime handling code
efi/libstub/x86: Fix EFI server boot failure
efi/x86: Disallow efi=old_map in mixed mode
x86/boot/compressed: Relax sed symbol type regex for LLVM ld.lld
efi/x86: avoid KASAN false positives when accessing the 1: 1 mapping
efi: Fix handling of multiple efi_fake_mem= entries
efi: Fix efi_memmap_alloc() leaks
efi: Add tracking for dynamically allocated memmaps
efi: Add a flags parameter to efi_memory_map
efi: Fix comment for efi_mem_type() wrt absent physical addresses
efi/arm: Defer probe of PCIe backed efifb on DT systems
efi/x86: Limit EFI old memory map to SGI UV machines
efi/x86: Avoid RWX mappings for all of DRAM
efi/x86: Don't map the entire kernel text RW for mixed mode
x86/mm: Fix NX bit clearing issue in kernel_map_pages_in_pgd
efi/libstub/x86: Fix unused-variable warning
efi/libstub/x86: Use mandatory 16-byte stack alignment in mixed mode
efi/libstub/x86: Use const attribute for efi_is_64bit()
efi: Allow disabling PCI busmastering on bridges during boot
efi/x86: Allow translating 64-bit arguments for mixed mode calls
...
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Print the node name during endpoint parsing for better debuggability.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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The mt9v111_def_fmt structure is only copied into another structure,
so make it const.
The opportunity for this change was found using Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Acked-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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mediatek jpeg codec driver can depend on MTK_IOMMU or MTK_IOMMU_V1
Signed-off-by: Maoguang Meng <maoguang.meng@mediatek.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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This device does not function correctly in raw mode in kernel
versions validating buffer sizes in bulk mode. It erroneously
announces 16 bits per pixel instead of 12 for NV12 format, so it
needs this quirk to fix computed frame size and avoid legitimate
frames getting discarded.
[Move info and div variables to local scope]
Signed-off-by: Sergey Zakharchenko <szakharchenko@digital-loggers.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Way back in 2017, fuzzing the 4.14-rc2 USB stack with syzkaller kicked
up the following WARNING from the UVC chain scanning code:
| list_add double add: new=ffff880069084010, prev=ffff880069084010,
| next=ffff880067d22298.
| ------------[ cut here ]------------
| WARNING: CPU: 1 PID: 1846 at lib/list_debug.c:31 __list_add_valid+0xbd/0xf0
| Modules linked in:
| CPU: 1 PID: 1846 Comm: kworker/1:2 Not tainted
| 4.14.0-rc2-42613-g1488251d1a98 #238
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
| Workqueue: usb_hub_wq hub_event
| task: ffff88006b01ca40 task.stack: ffff880064358000
| RIP: 0010:__list_add_valid+0xbd/0xf0 lib/list_debug.c:29
| RSP: 0018:ffff88006435ddd0 EFLAGS: 00010286
| RAX: 0000000000000058 RBX: ffff880067d22298 RCX: 0000000000000000
| RDX: 0000000000000058 RSI: ffffffff85a58800 RDI: ffffed000c86bbac
| RBP: ffff88006435dde8 R08: 1ffff1000c86ba52 R09: 0000000000000000
| R10: 0000000000000002 R11: 0000000000000000 R12: ffff880069084010
| R13: ffff880067d22298 R14: ffff880069084010 R15: ffff880067d222a0
| FS: 0000000000000000(0000) GS:ffff88006c900000(0000) knlGS:0000000000000000
| CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
| CR2: 0000000020004ff2 CR3: 000000006b447000 CR4: 00000000000006e0
| Call Trace:
| __list_add ./include/linux/list.h:59
| list_add_tail+0x8c/0x1b0 ./include/linux/list.h:92
| uvc_scan_chain_forward.isra.8+0x373/0x416
| drivers/media/usb/uvc/uvc_driver.c:1471
| uvc_scan_chain drivers/media/usb/uvc/uvc_driver.c:1585
| uvc_scan_device drivers/media/usb/uvc/uvc_driver.c:1769
| uvc_probe+0x77f2/0x8f00 drivers/media/usb/uvc/uvc_driver.c:2104
Looking into the output from usbmon, the interesting part is the
following data packet:
ffff880069c63e00 30710169 C Ci:1:002:0 0 143 = 09028f00 01030080
00090403 00000e01 00000924 03000103 7c003328 010204db
If we drop the lead configuration and interface descriptors, we're left
with an output terminal descriptor describing a generic display:
/* Output terminal descriptor */
buf[0] 09
buf[1] 24
buf[2] 03 /* UVC_VC_OUTPUT_TERMINAL */
buf[3] 00 /* ID */
buf[4] 01 /* type == 0x0301 (UVC_OTT_DISPLAY) */
buf[5] 03
buf[6] 7c
buf[7] 00 /* source ID refers to self! */
buf[8] 33
The problem with this descriptor is that it is self-referential: the
source ID of 0 matches itself! This causes the 'struct uvc_entity'
representing the display to be added to its chain list twice during
'uvc_scan_chain()': once via 'uvc_scan_chain_entity()' when it is
processed directly from the 'dev->entities' list and then again
immediately afterwards when trying to follow the source ID in
'uvc_scan_chain_forward()'
Add a check before adding an entity to a chain list to ensure that the
entity is not already part of a chain.
Link: https://lore.kernel.org/linux-media/CAAeHK+z+Si69jUR+N-SjN9q4O+o5KFiNManqEa-PjUta7EOb7A@mail.gmail.com/
Cc: <stable@vger.kernel.org>
Fixes: c0efd232929c ("V4L/DVB (8145a): USB Video Class driver")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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When aligning the format the pixel format that is being processed shall
be used to figure out alignment constraints, not the currently active
pixel format. The alignment might be part of a try operation and shall
not be effected by the active format. Fix this by looking at the correct
pixel format.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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msm needs 5.5-rc4, go to the latest.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Make sure to use the current alternate setting, which need not be the
first one by index, when verifying the endpoint descriptors and
initialising the URBs.
Failing to do so could cause the driver to misbehave or trigger a WARN()
in usb_submit_urb() that kernels with panic_on_warn set would choke on.
Fixes: 26ff63137c45 ("[media] Add support for the IguanaWorks USB IR Transceiver")
Fixes: ab1cbdf159be ("media: iguanair: add sanity checks")
Cc: stable <stable@vger.kernel.org> # 3.6
Cc: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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|
Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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i2c_new_client_device()
Use the newer API returning an ERRPTR and use the new helper to bail
out.
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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|
Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
|
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
|
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Use the newer API returning an ERRPTR and use the new helper to bail
out.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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In the case where v4l2_event_dequeue fails the structure ev is not
being filled and this garbage data from the stack is being copied
to the ev32 structure and being copied back to userspace on the
VIDIOC_DQEVENT_TIME32 ioctl. Fix this by ensuring the ev structure
is zero'd to ensure uninitialized data is not leaked back.
Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: 1a6c0b36dd19 ("media: v4l2-core: fix VIDIOC_DQEVENT for time64 ABI")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Despite using M2M in both the decoder and encoder, this driver used
vb2_v4l2_buffer as its base buffer structure, and placed a list_head
right after the buffer declaration in order to match the layout of a
v4l2_m2m_buffer. This is very dangerous as it means the driver will
break should the layout of v4l2_m2m_buffer change.
Fix this by directly using v4l2_m2m_buffer and updating the sites that
accessed the buffer accordingly.
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil-cisco@xs4all.nl: fix checkpatch warning]
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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In vpfe_register_ccdc_device(), failure to allocate dev->hw_ops
fields calls BUG_ON(). This patch returns the error to callers
instead of crashing. The issue was identified by a static
analysis tool, written by us.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Remove several functions that are no longer used now that the
conversion of cec drivers to cec_notifier_conn_(un)register() and
cec_notifier_cec_adap_(un)register() is complete.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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bdisp_device_run()
The driver may sleep while holding a spinlock.
The function call path (from bottom to top) in Linux 4.19 is:
drivers/media/platform/sti/bdisp/bdisp-hw.c, 385:
msleep in bdisp_hw_reset
drivers/media/platform/sti/bdisp/bdisp-v4l2.c, 341:
bdisp_hw_reset in bdisp_device_run
drivers/media/platform/sti/bdisp/bdisp-v4l2.c, 317:
_raw_spin_lock_irqsave in bdisp_device_run
To fix this bug, msleep() is replaced with udelay().
This bug is found by a static analysis tool STCheck written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Fixes coccicheck warning:
drivers/media/usb/pvrusb2/pvrusb2-encoder.c:288:2-3: Unneeded semicolon
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Ma Feng <mafeng.ma@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Move from the deprecated i2c_new_probed_device() to the new
i2c_new_scanned_device(). Make use of the new ERRPTR if suitable. Change
the legacy function to simply return void because the retval was never
used anywhere.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Move from the deprecated i2c_new_probed_device() to the new
i2c_new_scanned_device(). Make use of the new ERRPTR if suitable.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Move from the deprecated i2c_new_probed_device() to the new
i2c_new_scanned_device(). Make use of the new ERRPTR if suitable.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Here, this only means to update a comment in the driver.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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Move from the deprecated i2c_new_probed_device() to the new
i2c_new_scanned_device(). Make use of the new ERRPTR if suitable.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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In video_begin and video_end, saa7146_format_by_fourcc can return
NULL and is checked via BUG_ON. However, by returning the error
to the callers upstream, we can avoid the crash and handle it via
recovery code.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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In cx231xx_i2c_register, if dev->cx231xx_send_usb_command is NULL,
the code crashes. However, the callers in cx231xx-core are able to
handle the error without crashing. This patch fixes this issue.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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