Commit Graph

324 Commits

Author SHA1 Message Date
Marek Szyprowski
6ca3549d87 media: platform: s5p-mfc: Fix adding a standard frame skip mode control
Add proper control type to the recently introduced
V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE control. This will forward it to
v4l2_ctrl_new_std_menu() not v4l2_ctrl_new_std(), what causes the
failure. This fixes the following warning during driver initialization:

s5p_mfc_enc_ctrls_setup:2671: Adding control (18) failed
s5p_mfc_open:811: Failed to setup mfc controls

Fixes: ef56b3ee4f ("media: s5p-mfc: Use standard frame skip mode control")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-10-01 09:27:47 +02:00
Qiushi Wu
78741ce98c media: s5p-mfc: Fix a reference count leak
pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code, causing incorrect ref count if
pm_runtime_put_noidle() is not called in error handling paths.
Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails.

Fixes: c5086f130a ("[media] s5p-mfc: Use clock gating only on MFC v5 hardware")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-09-27 10:53:29 +02:00
Stanimir Varbanov
ef56b3ee4f media: s5p-mfc: Use standard frame skip mode control
Use the standard menu control for frame skip mode in the MFC
driver. The legacy private menu control is kept for backward
compatibility.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-09-01 14:13:29 +02:00
Joerg Roedel
0f45b04da1 iommu/exynos: Use dev_iommu_priv_get/set()
Remove the use of dev->archdata.iommu and use the private per-device
pointer provided by IOMMU core code instead.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200625130836.1916-2-joro@8bytes.org
2020-06-30 11:59:48 +02:00
Marek Szyprowski
cc8c0363dd media: s5p-mfc: Properly handle dma_parms for the allocated devices
Commit 9495b7e92f ("driver core: platform: Initialize dma_parms for
platform devices") in v5.7-rc5 added allocation of dma_parms structure to
all platform devices. Then vb2_dma_contig_set_max_seg_size() have been
changed not to allocate dma_parms structure and rely on the one allocated
by the device core. Lets allocate the needed structure also for the
devices created for the 2 MFC device memory ports.

Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Fixes: 9495b7e92f ("driver core: platform: Initialize dma_parms for platform devices")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-06-11 19:20:09 +02:00
Hans Verkuil
70cad4495a media: media/platform: rename VFL_TYPE_GRABBER to _VIDEO
'GRABBER' is a weird name, all other types map to the /dev
device names. Rename to 'VIDEO' to be consistent with the
other types.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-02-24 16:54:14 +01:00
Mauro Carvalho Chehab
95c520690f media: don't do a 31 bit shift on a signed int
On 32-bits archs, a signed integer has 31 bits plus on extra
bit for signal. Due to that, touching the 32th bit with something
like:

	int bar = 1 << 31;

has an undefined behavior in C on 32 bit architectures, as it
touches the signal bit. This is warned by cppcheck.

Instead, force the numbers to be unsigned, in order to solve this
issue.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-08-26 14:11:10 -03:00
Hans Verkuil
59fe916c84 media: media/platform: don't set description in ENUM_FMT
The V4L2 core sets the format description and flags for the driver in order
to ensure consistent naming.

So drop the strscpy of the description in drivers. Also remove any
description strings in driver-internal structures since those are
no longer needed.

And in am437x-vpfe.c drop an unnecessary f->type assignment in
vpfe_enum_fmt().

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Benoit Parrot <bparrot@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[hverkuil-cisco@xs4all.nl: addressed some small suggestions from Laurent]
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-07-22 14:43:59 -04:00
Linus Torvalds
ed63b9c873 media updates for v5.3-rc1
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Merge tag 'media/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - new Atmel microship ISC driver

 - coda has gained support for mpeg2 and mpeg4

 - cxusb gained support for analog TV

 - rockchip staging driver was split into two separate staging drivers

 - added a new staging driver for Allegro DVT video IP core

 - added a new staging driver for Amlogic Meson video decoder

 - lots of improvements and cleanups

* tag 'media/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (398 commits)
  media: allegro: use new v4l2_m2m_ioctl_try_encoder_cmd funcs
  media: doc-rst: Fix typos
  media: radio-raremono: change devm_k*alloc to k*alloc
  media: stv0297: fix frequency range limit
  media: rc: Prefer KEY_NUMERIC_* for number buttons on remotes
  media: dvb_frontend: split dvb_frontend_handle_ioctl function
  media: mceusb: disable "nonsensical irdata" messages
  media: rc: remove redundant dev_err message
  media: cec-notifier: add new notifier functions
  media: cec: add struct cec_connector_info support
  media: cec-notifier: rename variables, check kstrdup and n->conn_name
  media: MAINTAINERS: Add maintainers for Media Controller
  media: staging: media: tegra-vde: Defer dmabuf's unmapping
  media: staging: media: tegra-vde: Add IOMMU support
  media: hdpvr: fix locking and a missing msleep
  media: v4l2: Test type instead of cfg->type in v4l2_ctrl_new_custom()
  media: atmel: atmel-isc: fix i386 build error
  media: v4l2-ctrl: Move compound control initialization
  media: hantro: Use vb2_get_buffer
  media: pci: cx88: Change the type of 'missed' to u64
  ...
2019-07-09 09:47:22 -07:00
Marek Szyprowski
e08efef8fe media: s5p-mfc: Make additional clocks optional
Since the beginning the second clock ('special', 'sclk') was optional and
it is not available on some variants of Exynos SoCs (i.e. Exynos5420 with
v7 of MFC hardware).

However commit 1bce6fb3ed ("[media] s5p-mfc: Rework clock handling")
made handling of all specified clocks mandatory. This patch restores
original behavior of the driver and fixes its operation on
Exynos5420 SoCs.

Fixes: 1bce6fb3ed ("[media] s5p-mfc: Rework clock handling")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-21 16:50:54 -04:00
Thomas Gleixner
d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00
Marek Szyprowski
be22203aec media: s5p-mfc: fix reading min scratch buffer size on MFC v6/v7
MFC v6 and v7 has no register to read min scratch buffer size, so it has
to be read conditionally only if hardware supports it. This fixes following
NULL pointer exception on SoCs with MFC v6/v7:

8<--- cut here ---
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = f25837f9
[00000000] *pgd=bd93d835
Internal error: Oops: 17 [#1] PREEMPT SMP ARM
Modules linked in: btmrvl_sdio btmrvl bluetooth mwifiex_sdio mwifiex ecdh_generic ecc
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
PC is at s5p_mfc_get_min_scratch_buf_size+0x30/0x3c
LR is at s5p_mfc_get_min_scratch_buf_size+0x28/0x3c
...
[<c074f998>] (s5p_mfc_get_min_scratch_buf_size) from [<c0745bc0>] (s5p_mfc_irq+0x814/0xa5c)
[<c0745bc0>] (s5p_mfc_irq) from [<c019a218>] (__handle_irq_event_percpu+0x64/0x3f8)
[<c019a218>] (__handle_irq_event_percpu) from [<c019a5d8>] (handle_irq_event_percpu+0x2c/0x7c)
[<c019a5d8>] (handle_irq_event_percpu) from [<c019a660>] (handle_irq_event+0x38/0x5c)
[<c019a660>] (handle_irq_event) from [<c019ebc4>] (handle_fasteoi_irq+0xc4/0x180)
[<c019ebc4>] (handle_fasteoi_irq) from [<c0199270>] (generic_handle_irq+0x24/0x34)
[<c0199270>] (generic_handle_irq) from [<c0199888>] (__handle_domain_irq+0x7c/0xec)
[<c0199888>] (__handle_domain_irq) from [<c04ac298>] (gic_handle_irq+0x58/0x9c)
[<c04ac298>] (gic_handle_irq) from [<c0101ab0>] (__irq_svc+0x70/0xb0)
Exception stack(0xe73ddc60 to 0xe73ddca8)
...
[<c0101ab0>] (__irq_svc) from [<c01967d8>] (console_unlock+0x5a8/0x6a8)
[<c01967d8>] (console_unlock) from [<c01981d0>] (vprintk_emit+0x118/0x2d8)
[<c01981d0>] (vprintk_emit) from [<c01983b0>] (vprintk_default+0x20/0x28)
[<c01983b0>] (vprintk_default) from [<c01989b4>] (printk+0x30/0x54)
[<c01989b4>] (printk) from [<c07500b8>] (s5p_mfc_init_decode_v6+0x1d4/0x284)
[<c07500b8>] (s5p_mfc_init_decode_v6) from [<c07230d0>] (vb2_start_streaming+0x24/0x150)
[<c07230d0>] (vb2_start_streaming) from [<c0724e4c>] (vb2_core_streamon+0x11c/0x15c)
[<c0724e4c>] (vb2_core_streamon) from [<c07478b8>] (vidioc_streamon+0x64/0xa0)
[<c07478b8>] (vidioc_streamon) from [<c0709640>] (__video_do_ioctl+0x28c/0x45c)
[<c0709640>] (__video_do_ioctl) from [<c0709bc8>] (video_usercopy+0x260/0x8a4)
[<c0709bc8>] (video_usercopy) from [<c02b3820>] (do_vfs_ioctl+0xb0/0x9fc)
[<c02b3820>] (do_vfs_ioctl) from [<c02b41a0>] (ksys_ioctl+0x34/0x58)
[<c02b41a0>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall+0x0/0x28)
Exception stack(0xe73ddfa8 to 0xe73ddff0)
...
---[ end trace 376cf5ba6e0bee93 ]---

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-12 10:46:54 -04:00
Mauro Carvalho Chehab
5800571960 Linux 5.2-rc4
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Merge tag 'v5.2-rc4' into media/master

There are some conflicts due to SPDX changes. We also have more
patches being merged via media tree touching them.

So, let's merge back from upstream and address those.

Linux 5.2-rc4

* tag 'v5.2-rc4': (767 commits)
  Linux 5.2-rc4
  MAINTAINERS: Karthikeyan Ramasubramanian is MIA
  i2c: xiic: Add max_read_len quirk
  lockref: Limit number of cmpxchg loop retries
  uaccess: add noop untagged_addr definition
  x86/insn-eval: Fix use-after-free access to LDT entry
  kbuild: use more portable 'command -v' for cc-cross-prefix
  s390/unwind: correct stack switching during unwind
  block, bfq: add weight symlink to the bfq.weight cgroup parameter
  cgroup: let a symlink too be created with a cftype file
  drm/nouveau/secboot/gp10[2467]: support newer FW to fix SEC2 failures on some boards
  drm/nouveau/secboot: enable loading of versioned LS PMU/SEC2 ACR msgqueue FW
  drm/nouveau/secboot: split out FW version-specific LS function pointers
  drm/nouveau/secboot: pass max supported FW version to LS load funcs
  drm/nouveau/core: support versioned firmware loading
  drm/nouveau/core: pass subdev into nvkm_firmware_get, rather than device
  block: free sched's request pool in blk_cleanup_queue
  pktgen: do not sleep with the thread lock held.
  net: mvpp2: Use strscpy to handle stat strings
  net: rds: fix memory leak in rds_ib_flush_mr_pool
  ...

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-11 12:09:28 -04:00
Boris Brezillon
7e98b7b542 media: v4l2: Get rid of ->vidioc_enum_fmt_vid_{cap, out}_mplane
Support for multiplanar and singleplanar formats is mutually exclusive,
at least in practice. In our attempt to unify support for support for
mplane and !mplane in v4l, let's get rid of the
->vidioc_enum_fmt_{vid,out}_cap_mplane() hooks and call
->vidioc_enum_fmt_{vid,out}_cap() instead.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
[hverkuil-cisco@xs4all.nl: fix typos: pirv -> priv and prov -> priv]
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-05 07:48:32 -04:00
Boris Brezillon
1ddc8a9732 media: v4l2: Make sure all drivers set _MPLANE caps in vdev->device_caps
This is needed if we want the core to be able to check _MPLANE support
without having to call the ->vidioc_querycap() hook.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-05 07:45:37 -04:00
Thomas Gleixner
2874c5fd28 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:32 -07:00
Hans Verkuil
4914425e28 media: coda/venus/s5p_mfc: fix control typo
These two slice modes used by the V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE
control had a silly typo:

V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB
V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_BYTES

SICE should be SLICE.

Rename these enum values, keeping the old ones (under #ifndef __KERNEL__)
for backwards compatibility reasons.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-05-28 12:07:22 -04:00
Linus Torvalds
065b6c4c91 Devicetree updates for v5.1:
- Fix a unittest failure on UML. Preparation for converting to
   kunit test framework.
 
 - Add annotations to dtx_diff output
 
 - Fix unittest reporting of expected error
 
 - Move DMA configuration for virtual devices into the driver that
   needs it (s5p-mfc)
 
 - Vendor prefixes for feiyang and techstar
 
 - Convert ARM GIC, GICv3, and L2x0 to DT schema
 
 - Add r8a7778/9 HSCIF serial bindings
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Merge tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree updates from Rob Herring:

 - Fix a unittest failure on UML. Preparation for converting to kunit
   test framework.

 - Add annotations to dtx_diff output

 - Fix unittest reporting of expected error

 - Move DMA configuration for virtual devices into the driver that needs
   it (s5p-mfc)

 - Vendor prefixes for feiyang and techstar

 - Convert ARM GIC, GICv3, and L2x0 to DT schema

 - Add r8a7778/9 HSCIF serial bindings

* tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: unittest: unflatten device tree on UML when testing
  dt-bindings: Add vendor prefix for feiyang
  dt-bindings: Add vendor prefix for techstar
  dt-bindings: display: add missing semicolon in example
  of: mark early_init_dt_alloc_reserved_memory_arch static
  of: add dtc annotations functionality to dtx_diff
  of: unittest: add caution to function header comment
  of: unittest: remove report of expected error
  dt-bindings: interrupt-controller: Convert ARM GICv3 to json-schema
  dt-bindings: interrupt-controller: Convert ARM GIC to json-schema
  dt-bindings: arm: l2x0: Convert L2 cache to json-schema
  media: s5p-mfc: Fix memdev DMA configuration
  dt-bindings: serial: sh-sci: Document r8a7778/9 HSCIF bindings
2019-03-10 10:58:43 -07:00
Mauro Carvalho Chehab
8b72c18d46 media: platform: fix several typos
Use codespell to fix lots of typos over frontends.

Manually verified to avoid false-positives.

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Houlong Wei <houlong.wei@mediatek.com>
Reviewed-by: Yong Deng <yong.deng@magewell.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-03-01 09:35:21 -05:00
Robin Murphy
42e45a9449 media: s5p-mfc: Fix memdev DMA configuration
Having of_reserved_mem_device_init() forcibly reconfigure DMA for all
callers, potentially overriding the work done by a bus-specific
.dma_configure method earlier, is at best a bad idea and at worst
actively harmful. If drivers really need virtual devices to own
dma-coherent memory, they should explicitly configure those devices
based on the appropriate firmware node as they create them.

It looks like the only driver not passing in a proper OF platform device
is s5p-mfc, so move the rogue of_dma_configure() call into that driver
where it logically belongs.

Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-01-21 18:49:32 -06:00
Marek Szyprowski
1e0d0a5fd3 media: s5p-mfc: fix incorrect bus assignment in virtual child device
Virtual MFC codec's child devices must not be assigned to platform bus,
because they are allocated as raw 'struct device' and don't have the
corresponding 'platform' part. This fixes NULL pointer access revealed
recently by commit a66d972465 ("devres: Align data[] to
ARCH_KMALLOC_MINALIGN").

Fixes: c79667dd93 ("media: s5p-mfc: replace custom reserved memory handling code with generic one")

Reported-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by:  Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-01-07 14:39:36 -05:00
Hans Verkuil
8edf27c275 media: s5p_mfc_dec.c: convert g_crop to g_selection
The g_crop really implemented composition for the CAPTURE stream.

Replace g_crop by g_selection and set the V4L2_FL_QUIRK_INVERTED_CROP
flag since this is one of the old drivers that predates the selection
API. Those old drivers allowed g_crop when it really shouldn't have
since g_crop returns a compose rectangle instead of a crop rectangle.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-11-20 13:47:46 -05:00
Linus Torvalds
b3491d8430 media updates for v4.20-rc1
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Merge tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull new experimental media request API from Mauro Carvalho Chehab:
 "A new media request API

  This API is needed to support device drivers that can dynamically
  change their parameters for each new frame. The latest versions of
  Google camera and codec HAL depends on such feature.

  At this stage, it supports only stateless codecs.

  It has been discussed for a long time (at least over the last 3-4
  years), and we finally reached to something that seem to work.

  This series contain both the API and core changes required to support
  it and a new m2m decoder driver (cedrus).

  As the current API is still experimental, the only real driver using
  it (cedrus) was added at staging[1]. We intend to keep it there for a
  while, in order to test the API. Only when we're sure that this API
  works for other cases (like encoders), we'll move this driver out of
  staging and set the API into a stone.

  [1] We added support for the vivid virtual driver (used only for
  testing) to it too, as it makes easier to test the API for the ones
  that don't have the cedrus hardware"

* tag 'media/v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (53 commits)
  media: dt-bindings: Document the Rockchip VPU bindings
  media: platform: Add Cedrus VPU decoder driver
  media: dt-bindings: media: Document bindings for the Cedrus VPU driver
  media: v4l: Add definition for the Sunxi tiled NV12 format
  media: v4l: Add definitions for MPEG-2 slice format and metadata
  media: videobuf2-core: Rework and rename helper for request buffer count
  media: v4l2-ctrls.c: initialize an error return code with zero
  media: v4l2-compat-ioctl32.c: add missing documentation for a field
  media: media-request: update documentation
  media: media-request: EPERM -> EACCES/EBUSY
  media: v4l2-ctrls: improve media_request_(un)lock_for_update
  media: v4l2-ctrls: use media_request_(un)lock_for_access
  media: media-request: add media_request_(un)lock_for_access
  media: vb2: set reqbufs/create_bufs capabilities
  media: videodev2.h: add new capabilities for buffer types
  media: buffer.rst: only set V4L2_BUF_FLAG_REQUEST_FD for QBUF
  media: v4l2-ctrls: return -EACCES if request wasn't completed
  media: media-request: return -EINVAL for invalid request_fds
  media: vivid: add request support
  media: vivid: add mc
  ...
2018-10-31 10:53:29 -07:00
Mauro Carvalho Chehab
c0decac19d media: use strscpy() instead of strlcpy()
The implementation of strscpy() is more robust and safer.

That's now the recommended way to copy NUL terminated strings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-09-11 13:32:17 -04:00
Hans Verkuil
394dc58880 media: videobuf2-v4l2: integrate with media requests
This implements the V4L2 part of the request support. The main
change is that vb2_qbuf and vb2_prepare_buf now have a new
media_device pointer. This required changes to several drivers
that did not use the vb2_ioctl_qbuf/prepare_buf helper functions.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-08-31 11:19:30 -04:00
Sylwester Nawrocki
4faeaf9c0f media: s5p-mfc: Fix buffer look up in s5p_mfc_handle_frame_{new, copy_time} functions
Look up of buffers in s5p_mfc_handle_frame_new, s5p_mfc_handle_frame_copy_time
functions is not working properly for DMA addresses above 2 GiB. As a result
flags and timestamp of returned buffers are not set correctly and it breaks
operation of GStreamer/OMX plugins which rely on the CAPTURE buffer queue
flags.

Due to improper return type of the get_dec_y_adr, get_dspl_y_adr callbacks
and sign bit extension these callbacks return incorrect address values,
e.g. 0xfffffffffefc0000 instead of 0x00000000fefc0000. Then the statement:

"if (vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0) == dec_y_addr)"

is always false, which breaks looking up capture queue buffers.

To ensure proper matching by address u32 type is used for the DMA
addresses. This should work on all related SoCs, since the MFC DMA
address width is not larger than 32-bit.

Changes done in this patch are minimal as there is a larger patch series
pending refactoring the whole driver.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-27 13:09:40 -04:00
Wolfram Sang
666e994aa2 media: platform: s5p-mfc: simplify getting .drvdata
We should get drvdata from struct device directly. Going via
platform_device is an unneeded step back and forth.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-04 11:45:40 -04:00
Keiichi Watanabe
5520b9467a media: v4l2-ctrl: Change control for VP8 profile to menu control
Add a menu control V4L2_CID_MPEG_VIDEO_VP8_PROFILE for VP8 profile and make
V4L2_CID_MPEG_VIDEO_VPX_PROFILE an alias of it. This new control is used to
select the desired profile for VP8 encoder and query for supported profiles by
VP8 encoder/decoder.

Though we have originally a control V4L2_CID_MPEG_VIDEO_VPX_PROFILE and its name
contains 'VPX', it works only for VP8 because supported profiles usually differ
between VP8 and VP9. In addition, this control cannot be used for querying since
it is not a menu control but an integer control, which cannot return an
arbitrary set of supported profiles.

The new control V4L2_CID_MPEG_VIDEO_VP8_PROFILE is a menu control as with
controls for other codec profiles. (e.g. H264)

In addition, this patch also fixes the use of V4L2_CID_MPEG_VIDEO_VPX_PROFILE in
drivers of Qualcomm's venus and Samsung's s5p-mfc.

Signed-off-by: Keiichi Watanabe <keiichiw@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-07-04 09:28:38 -04:00
Hans Verkuil
fd1857240d media: s5p-mfc: fix two sparse warnings
media-git/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c: In function 'vidioc_querycap':
media-git/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c:1317:2: warning: 'strncpy' output may be truncated copying 31 bytes from a string of length 31 [-Wstringop-truncation]
  strncpy(cap->card, dev->vfd_enc->name, sizeof(cap->card) - 1);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
media-git/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c: In function 'vidioc_querycap':
media-git/drivers/media/platform/s5p-mfc/s5p_mfc_dec.c:275:2: warning: 'strncpy' output may be truncated copying 31 bytes from a string of length 31 [-Wstringop-truncation]
  strncpy(cap->card, dev->vfd_dec->name, sizeof(cap->card) - 1);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-05-25 15:31:00 -04:00
Mauro Carvalho Chehab
93eaf301a7 media: s5p_mfc_enc: get rid of new warnings
The values of enc_y_addr and enc_c_addr are initialized by
s5p_mfc_hw_call(), but, in thesis, this macro might be doing
nothing, if the get_enc_frame_buffer() is not declared.
That causes those GCC warnings:

	drivers/media/platform/s5p-mfc/s5p_mfc_enc.c:1242 enc_post_frame_start() error: uninitialized symbol 'enc_y_addr'.
	drivers/media/platform/s5p-mfc/s5p_mfc_enc.c:1243 enc_post_frame_start() error: uninitialized symbol 'enc_c_addr'.
	drivers/media/platform/s5p-mfc/s5p_mfc_enc.c:1256 enc_post_frame_start() error: uninitialized symbol 'enc_y_addr'.
	drivers/media/platform/s5p-mfc/s5p_mfc_enc.c:1257 enc_post_frame_start() error: uninitialized symbol 'enc_c_addr'.

Change the logic by initializing those constants to zero,
with should hopefully do the right thing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:23:48 -04:00
Sylwester Nawrocki
740ba614c9 media: s5p-mfc: Amend initial min, max values of HEVC hierarchical coding QP controls
Valid range for those controls is specified in documentation as [0, 51],
so initialize the controls to such range rather than [INT_MIN, INT_MAX].

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:21:29 -04:00
Sylwester Nawrocki
11b7090d80 media: s5p-mfc: Ensure HEVC QP controls range is properly updated
When value of V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP or V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP
controls is changed we should update range of a set of HEVC quantization
parameter v4l2 controls as specified in the HEVC controls documentation.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:20:34 -04:00
Marek Szyprowski
c8e6f90d82 media: s5p-mfc: Use real device for request_firmware() call
Provide proper (real) struct device to request_firmware() call. This fixes
following error messages:

(NULL device *): Direct firmware load for s5p-mfc-v6-v2.fw failed with error -2
(NULL device *): Direct firmware load for s5p-mfc-v6.fw failed with error -2

into a bit more meaningful ones:

s5p-mfc 11000000.codec: Direct firmware load for s5p-mfc-v6-v2.fw failed with error -2
s5p-mfc 11000000.codec: Direct firmware load for s5p-mfc-v6.fw failed with error -2

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:19:52 -04:00
Smitha T Murthy
3ce7f6aaf1 media: s5p-mfc: Add support for HEVC encoder
Add HEVC encoder support and necessary registers, V4L2 CIDs,
and hevc encoder parameters

Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:19:23 -04:00
Smitha T Murthy
fc92b92a04 media: s5p-mfc: Add VP9 decoder support
Add support for codec definition and corresponding buffer
requirements for VP9 decoder.

Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:18:13 -04:00
Smitha T Murthy
c9fcd51c16 media: s5p-mfc: Add support for HEVC decoder
Add support for codec definition and corresponding buffer
requirements for HEVC decoder.

Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:15:38 -04:00
Smitha T Murthy
1c700fa76b media: s5p-mfc: Support MFCv10.10 buffer requirements
Aligning the luma_dpb_size, chroma_dpb_size, mv_size and me_buffer_size
for MFCv10.10.

Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Kamil Debski <kamil@wypas.org>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:14:51 -04:00
Smitha T Murthy
c8ffbd433a media: s5p-mfc: Use min scratch buffer size as provided by F/W
After MFC v8.0, mfc f/w lets the driver know how much scratch buffer
size is required for decoder. If mfc f/w has the functionality,
E_MIN_SCRATCH_BUFFER_SIZE, driver can know how much scratch buffer size
is required for encoder too.

Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:08:26 -04:00
Smitha T Murthy
b1394dc151 media: s5p-mfc: Adding initial support for MFC v10.10
Adding the support for MFC v10.10, with new register file and
necessary hw control, decoder, encoder and structural changes.

Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:06:26 -04:00
Smitha T Murthy
f1a355bf9e media: s5p-mfc: Rename IS_MFCV8 macro
This patch renames macro IS_MFCV8 to IS_MFCV8_PLUS so that the MFCv8
code can be resued for MFCv10.10 support. Since the MFCv8 specific code
holds good for MFC v10.10 also.

Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Acked-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-22 07:04:28 -04:00
Linus Torvalds
a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00
Linus Torvalds
68c5735eaa media updates for v4.16-rc1
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Merge tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - videobuf2 was moved to a media/common dir, as it is now used by the
   DVB subsystem too

 - Digital TV core memory mapped support interface

 - new sensor driver: ov7740

 - several improvements at ddbridge driver

 - new V4L2 driver: IPU3 CIO2 CSI-2 receiver unit, found on some Intel
   SoCs

 - new tuner driver: tda18250

 - finally got rid of all LIRC staging drivers

 - as we don't have old lirc drivers anymore, restruct the lirc device
   code

 - add support for UVC metadata

 - add a new staging driver for NVIDIA Tegra Video Decoder Engine

 - DVB kAPI headers moved to include/media

 - synchronize the kAPI and uAPI for the DVB subsystem, removing the gap
   for non-legacy APIs

 - reduce the kAPI gap for V4L2

 - lots of other driver enhancements, cleanups, etc.

* tag 'media/v4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (407 commits)
  media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs
  media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic
  media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors
  media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type
  media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32
  media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer
  media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
  media: v4l2-compat-ioctl32.c: avoid sizeof(type)
  media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
  media: v4l2-compat-ioctl32.c: fix the indentation
  media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
  media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
  media: v4l2-ioctl.c: use check_fmt for enum/g/s/try_fmt
  media: vivid: fix module load error when enabling fb and no_error_inj=1
  media: dvb_demux: improve debug messages
  media: dvb_demux: Better handle discontinuity errors
  media: cxusb, dib0700: ignore XC2028_I2C_FLUSH
  media: ts2020: avoid integer overflows on 32 bit machines
  media: i2c: ov7740: use gpio/consumer.h instead of gpio.h
  media: entity: Add a nop variant of media_entity_cleanup
  ...
2018-02-06 11:27:48 -08:00
Shuah Khan
f45ce98775 media: s5p-mfc: Fix lock contention - request_firmware() once
Driver calls request_firmware() whenever the device is opened for the
first time. As the device gets opened and closed, dev->num_inst == 1
is true several times. This is not necessary since the firmware is saved
in the fw_buf. s5p_mfc_load_firmware() copies the buffer returned by
the request_firmware() to dev->fw_buf.

fw_buf sticks around until it gets released from s5p_mfc_remove(), hence
there is no need to keep requesting firmware and copying it to fw_buf.

This might have been overlooked when changes are made to free fw_buf from
the device release interface s5p_mfc_release().

Fix s5p_mfc_load_firmware() to call request_firmware() once and keep state.
Change _probe() to load firmware once fw_buf has been allocated.

s5p_mfc_open() and it continues to call s5p_mfc_load_firmware() and init
hardware which is the step where firmware is written to the device.

This addresses the mfc_mutex contention due to repeated request_firmware()
calls from open() in the following circular locking warning:

[  552.194115] qtdemux0:sink/2710 is trying to acquire lock:
[  552.199488]  (&dev->mfc_mutex){+.+.}, at: [<bf145544>] s5p_mfc_mmap+0x28/0xd4 [s5p_mfc]
[  552.207459]
               but task is already holding lock:
[  552.213264]  (&mm->mmap_sem){++++}, at: [<c01df2e4>] vm_mmap_pgoff+0x44/0xb8
[  552.220284]
               which lock already depends on the new lock.

[  552.228429]
               the existing dependency chain (in reverse order) is:
[  552.235881]
               -> #2 (&mm->mmap_sem){++++}:
[  552.241259]        __might_fault+0x80/0xb0
[  552.245331]        filldir64+0xc0/0x2f8
[  552.249144]        call_filldir+0xb0/0x14c
[  552.253214]        ext4_readdir+0x768/0x90c
[  552.257374]        iterate_dir+0x74/0x168
[  552.261360]        SyS_getdents64+0x7c/0x1a0
[  552.265608]        ret_fast_syscall+0x0/0x28
[  552.269850]
               -> #1 (&type->i_mutex_dir_key#2){++++}:
[  552.276180]        down_read+0x48/0x90
[  552.279904]        lookup_slow+0x74/0x178
[  552.283889]        walk_component+0x1a4/0x2e4
[  552.288222]        link_path_walk+0x174/0x4a0
[  552.292555]        path_openat+0x68/0x944
[  552.296541]        do_filp_open+0x60/0xc4
[  552.300528]        file_open_name+0xe4/0x114
[  552.304772]        filp_open+0x28/0x48
[  552.308499]        kernel_read_file_from_path+0x30/0x78
[  552.313700]        _request_firmware+0x3ec/0x78c
[  552.318291]        request_firmware+0x3c/0x54
[  552.322642]        s5p_mfc_load_firmware+0x54/0x150 [s5p_mfc]
[  552.328358]        s5p_mfc_open+0x4e4/0x550 [s5p_mfc]
[  552.333394]        v4l2_open+0xa0/0x104 [videodev]
[  552.338137]        chrdev_open+0xa4/0x18c
[  552.342121]        do_dentry_open+0x208/0x310
[  552.346454]        path_openat+0x28c/0x944
[  552.350526]        do_filp_open+0x60/0xc4
[  552.354512]        do_sys_open+0x118/0x1c8
[  552.358586]        ret_fast_syscall+0x0/0x28
[  552.362830]
               -> #0 (&dev->mfc_mutex){+.+.}:
               -> #0 (&dev->mfc_mutex){+.+.}:
[  552.368379]        lock_acquire+0x6c/0x88
[  552.372364]        __mutex_lock+0x68/0xa34
[  552.376437]        mutex_lock_interruptible_nested+0x1c/0x24
[  552.382086]        s5p_mfc_mmap+0x28/0xd4 [s5p_mfc]
[  552.386939]        v4l2_mmap+0x54/0x88 [videodev]
[  552.391601]        mmap_region+0x3a8/0x638
[  552.395673]        do_mmap+0x330/0x3a4
[  552.399400]        vm_mmap_pgoff+0x90/0xb8
[  552.403472]        SyS_mmap_pgoff+0x90/0xc0
[  552.407632]        ret_fast_syscall+0x0/0x28
[  552.411876]
               other info that might help us debug this:

[  552.419848] Chain exists of:
                 &dev->mfc_mutex --> &type->i_mutex_dir_key#2 --> &mm->mmap_sem

[  552.431200]  Possible unsafe locking scenario:

[  552.437092]        CPU0                    CPU1
[  552.441598]        ----                    ----
[  552.446104]   lock(&mm->mmap_sem);
[  552.449484]                                lock(&type->i_mutex_dir_key#2);
[  552.456329]                                lock(&mm->mmap_sem);
[  552.462222]   lock(&dev->mfc_mutex);
[  552.465775]
                *** DEADLOCK ***

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-18 15:11:01 -05:00
Shuah Khan
a465321ac1 media: s5p-mfc: Remove firmware buf null check in s5p_mfc_load_firmware()
s5p_mfc_load_firmware() will not get called if fw_buf.virt allocation
fails. The allocation happens very early on in the probe routine and
probe fails if allocation fails.

There is no need to check if it is null in s5p_mfc_load_firmware().
Remove the check.

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-18 15:10:33 -05:00
Sylwester Nawrocki
ff51762f8b media: s5p-mfc: Fix encoder menu controls initialization
This patch fixes the menu_skip_mask field initialization and
addresses a following issue found by the SVACE static analysis:

* NO_EFFECT.SELF: assignment to self in expression 'cfg.menu_skip_mask = cfg.menu_skip_mask'
  No effect at drivers/media/platform/s5p-mfc/s5p_mfc_enc.c:2083

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-18 15:07:44 -05:00
Al Viro
c23e0cb81e media: annotate ->poll() instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-27 16:20:06 -05:00
Kees Cook
e99e88a9d2 treewide: setup_timer() -> timer_setup()
This converts all remaining cases of the old setup_timer() API into using
timer_setup(), where the callback argument is the structure already
holding the struct timer_list. These should have no behavioral changes,
since they just change which pointer is passed into the callback with
the same available pointers after conversion. It handles the following
examples, in addition to some other variations.

Casting from unsigned long:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, ptr);

and forced object casts:

    void my_callback(struct something *ptr)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr);

become:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

Direct function assignments:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    ptr->my_timer.function = my_callback;

have a temporary cast added, along with converting the args:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback;

And finally, callbacks without a data assignment:

    void my_callback(unsigned long data)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, 0);

have their argument renamed to verify they're unused during conversion:

    void my_callback(struct timer_list *unused)
    {
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

The conversion is done with the following Coccinelle script:

spatch --very-quiet --all-includes --include-headers \
	-I ./arch/x86/include -I ./arch/x86/include/generated \
	-I ./include -I ./arch/x86/include/uapi \
	-I ./arch/x86/include/generated/uapi -I ./include/uapi \
	-I ./include/generated/uapi --include ./include/linux/kconfig.h \
	--dir . \
	--cocci-file ~/src/data/timer_setup.cocci

@fix_address_of@
expression e;
@@

 setup_timer(
-&(e)
+&e
 , ...)

// Update any raw setup_timer() usages that have a NULL callback, but
// would otherwise match change_timer_function_usage, since the latter
// will update all function assignments done in the face of a NULL
// function initialization in setup_timer().
@change_timer_function_usage_NULL@
expression _E;
identifier _timer;
type _cast_data;
@@

(
-setup_timer(&_E->_timer, NULL, _E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E->_timer, NULL, (_cast_data)_E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, &_E);
+timer_setup(&_E._timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, (_cast_data)&_E);
+timer_setup(&_E._timer, NULL, 0);
)

@change_timer_function_usage@
expression _E;
identifier _timer;
struct timer_list _stl;
identifier _callback;
type _cast_func, _cast_data;
@@

(
-setup_timer(&_E->_timer, _callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
 _E->_timer@_stl.function = _callback;
|
 _E->_timer@_stl.function = &_callback;
|
 _E->_timer@_stl.function = (_cast_func)_callback;
|
 _E->_timer@_stl.function = (_cast_func)&_callback;
|
 _E._timer@_stl.function = _callback;
|
 _E._timer@_stl.function = &_callback;
|
 _E._timer@_stl.function = (_cast_func)_callback;
|
 _E._timer@_stl.function = (_cast_func)&_callback;
)

// callback(unsigned long arg)
@change_callback_handle_cast
 depends on change_timer_function_usage@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
identifier _handle;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
(
	... when != _origarg
	_handletype *_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
)
 }

// callback(unsigned long arg) without existing variable
@change_callback_handle_cast_no_arg
 depends on change_timer_function_usage &&
                     !change_callback_handle_cast@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
+	_handletype *_origarg = from_timer(_origarg, t, _timer);
+
	... when != _origarg
-	(_handletype *)_origarg
+	_origarg
	... when != _origarg
 }

// Avoid already converted callbacks.
@match_callback_converted
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
	    !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier t;
@@

 void _callback(struct timer_list *t)
 { ... }

// callback(struct something *handle)
@change_callback_handle_arg
 depends on change_timer_function_usage &&
	    !match_callback_converted &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
@@

 void _callback(
-_handletype *_handle
+struct timer_list *t
 )
 {
+	_handletype *_handle = from_timer(_handle, t, _timer);
	...
 }

// If change_callback_handle_arg ran on an empty function, remove
// the added handler.
@unchange_callback_handle_arg
 depends on change_timer_function_usage &&
	    change_callback_handle_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
identifier t;
@@

 void _callback(struct timer_list *t)
 {
-	_handletype *_handle = from_timer(_handle, t, _timer);
 }

// We only want to refactor the setup_timer() data argument if we've found
// the matching callback. This undoes changes in change_timer_function_usage.
@unchange_timer_function_usage
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg &&
	    !change_callback_handle_arg@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type change_timer_function_usage._cast_data;
@@

(
-timer_setup(&_E->_timer, _callback, 0);
+setup_timer(&_E->_timer, _callback, (_cast_data)_E);
|
-timer_setup(&_E._timer, _callback, 0);
+setup_timer(&_E._timer, _callback, (_cast_data)&_E);
)

// If we fixed a callback from a .function assignment, fix the
// assignment cast now.
@change_timer_function_assignment
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_func;
typedef TIMER_FUNC_TYPE;
@@

(
 _E->_timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-&_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
)

// Sometimes timer functions are called directly. Replace matched args.
@change_timer_function_calls
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression _E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_data;
@@

 _callback(
(
-(_cast_data)_E
+&_E->_timer
|
-(_cast_data)&_E
+&_E._timer
|
-_E
+&_E->_timer
)
 )

// If a timer has been configured without a data argument, it can be
// converted without regard to the callback argument, since it is unused.
@match_timer_function_unused_data@
expression _E;
identifier _timer;
identifier _callback;
@@

(
-setup_timer(&_E->_timer, _callback, 0);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0L);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0UL);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0L);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0UL);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0L);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0UL);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0L);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0UL);
+timer_setup(_timer, _callback, 0);
)

@change_callback_unused_data
 depends on match_timer_function_unused_data@
identifier match_timer_function_unused_data._callback;
type _origtype;
identifier _origarg;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *unused
 )
 {
	... when != _origarg
 }

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:07 -08:00
Kees Cook
b9eaf18722 treewide: init_timer() -> setup_timer()
This mechanically converts all remaining cases of ancient open-coded timer
setup with the old setup_timer() API, which is the first step in timer
conversions. This has no behavioral changes, since it ultimately just
changes the order of assignment to fields of struct timer_list when
finding variations of:

    init_timer(&t);
    f.function = timer_callback;
    t.data = timer_callback_arg;

to be converted into:

    setup_timer(&t, timer_callback, timer_callback_arg);

The conversion is done with the following Coccinelle script, which
is an improved version of scripts/cocci/api/setup_timer.cocci, in the
following ways:
 - assignments-before-init_timer() cases
 - limit the .data case removal to the specific struct timer_list instance
 - handling calls by dereference (timer->field vs timer.field)

spatch --very-quiet --all-includes --include-headers \
	-I ./arch/x86/include -I ./arch/x86/include/generated \
	-I ./include -I ./arch/x86/include/uapi \
	-I ./arch/x86/include/generated/uapi -I ./include/uapi \
	-I ./include/generated/uapi --include ./include/linux/kconfig.h \
	--dir . \
	--cocci-file ~/src/data/setup_timer.cocci

@fix_address_of@
expression e;
@@

 init_timer(
-&(e)
+&e
 , ...)

// Match the common cases first to avoid Coccinelle parsing loops with
// "... when" clauses.

@match_immediate_function_data_after_init_timer@
expression e, func, da;
@@

-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );
(
-\(e.function\|e->function\) = func;
-\(e.data\|e->data\) = da;
|
-\(e.data\|e->data\) = da;
-\(e.function\|e->function\) = func;
)

@match_immediate_function_data_before_init_timer@
expression e, func, da;
@@

(
-\(e.function\|e->function\) = func;
-\(e.data\|e->data\) = da;
|
-\(e.data\|e->data\) = da;
-\(e.function\|e->function\) = func;
)
-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );

@match_function_and_data_after_init_timer@
expression e, e2, e3, e4, e5, func, da;
@@

-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );
 ... when != func = e2
     when != da = e3
(
-e.function = func;
... when != da = e4
-e.data = da;
|
-e->function = func;
... when != da = e4
-e->data = da;
|
-e.data = da;
... when != func = e5
-e.function = func;
|
-e->data = da;
... when != func = e5
-e->function = func;
)

@match_function_and_data_before_init_timer@
expression e, e2, e3, e4, e5, func, da;
@@
(
-e.function = func;
... when != da = e4
-e.data = da;
|
-e->function = func;
... when != da = e4
-e->data = da;
|
-e.data = da;
... when != func = e5
-e.function = func;
|
-e->data = da;
... when != func = e5
-e->function = func;
)
... when != func = e2
    when != da = e3
-init_timer
+setup_timer
 ( \(&e\|e\)
+, func, da
 );

@r1 exists@
expression t;
identifier f;
position p;
@@

f(...) { ... when any
  init_timer@p(\(&t\|t\))
  ... when any
}

@r2 exists@
expression r1.t;
identifier g != r1.f;
expression e8;
@@

g(...) { ... when any
  \(t.data\|t->data\) = e8
  ... when any
}

// It is dangerous to use setup_timer if data field is initialized
// in another function.
@script:python depends on r2@
p << r1.p;
@@

cocci.include_match(False)

@r3@
expression r1.t, func, e7;
position r1.p;
@@

(
-init_timer@p(&t);
+setup_timer(&t, func, 0UL);
... when != func = e7
-t.function = func;
|
-t.function = func;
... when != func = e7
-init_timer@p(&t);
+setup_timer(&t, func, 0UL);
|
-init_timer@p(t);
+setup_timer(t, func, 0UL);
... when != func = e7
-t->function = func;
|
-t->function = func;
... when != func = e7
-init_timer@p(t);
+setup_timer(t, func, 0UL);
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:06 -08:00
Linus Torvalds
5d352e69c6 media updates for v4.15-rc1
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Merge tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - Documentation for digital TV (both kAPI and uAPI) are now in sync
   with the implementation (except for legacy/deprecated ioctls). This
   is a major step, as there were always a gap there

 - New sensor driver: imx274

 - New cec driver: cec-gpio

 - New platform driver for rockship rga and tegra CEC

 - New RC driver: tango-ir

 - Several cleanups at atomisp driver

 - Core improvements for RC, CEC, V4L2 async probing support and DVB

 - Lots of drivers cleanup, fixes and improvements.

* tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (332 commits)
  dvb_frontend: don't use-after-free the frontend struct
  media: dib0700: fix invalid dvb_detach argument
  media: v4l2-ctrls: Don't validate BITMASK twice
  media: s5p-mfc: fix lockdep warning
  media: dvb-core: always call invoke_release() in fe_free()
  media: usb: dvb-usb-v2: dvb_usb_core: remove redundant code in dvb_usb_fe_sleep
  media: au0828: make const array addr_list static
  media: cx88: make const arrays default_addr_list and pvr2000_addr_list static
  media: drxd: make const array fastIncrDecLUT static
  media: usb: fix spelling mistake: "synchronuously" -> "synchronously"
  media: ddbridge: fix build warnings
  media: av7110: avoid 2038 overflow in debug print
  media: Don't do DMA on stack for firmware upload in the AS102 driver
  media: v4l: async: fix unregister for implicitly registered sub-device notifiers
  media: v4l: async: fix return of unitialized variable ret
  media: imx274: fix missing return assignment from call to imx274_mode_regs
  media: camss-vfe: always initialize reg at vfe_set_xbar_cfg()
  media: atomisp: make function calls cleaner
  media: atomisp: get rid of storage_class.h
  media: atomisp: get rid of wrong stddef.h include
  ...
2017-11-15 20:30:12 -08:00
Shuah Khan
55a839a093 media: s5p-mfc: fix lockdep warning
The driver mmap functions shouldn't take lock when calling vb2_mmap().
Fix it to not take the lock. The following lockdep warning is fixed
with this change.

[ 2106.181412] ======================================================
[ 2106.187563] WARNING: possible circular locking dependency detected
[ 2106.193718] 4.14.0-rc2-00002-gfab205f-dirty #4 Not tainted
[ 2106.199175] ------------------------------------------------------
[ 2106.205328] qtdemux0:sink/2614 is trying to acquire lock:
[ 2106.210701]  (&dev->mfc_mutex){+.+.}, at: [<bf175544>] s5p_mfc_mmap+0x28/0xd4 [s5p_mfc]
[ 2106.218672]
[ 2106.218672] but task is already holding lock:
[ 2106.224477]  (&mm->mmap_sem){++++}, at: [<c01df2e4>] vm_mmap_pgoff+0x44/0xb8
[ 2106.231497]
[ 2106.231497] which lock already depends on the new lock.
[ 2106.231497]
[ 2106.239642]
[ 2106.239642] the existing dependency chain (in reverse order) is:
[ 2106.247095]
[ 2106.247095] -> #1 (&mm->mmap_sem){++++}:
[ 2106.252473]        __might_fault+0x80/0xb0
[ 2106.256567]        video_usercopy+0x1cc/0x510 [videodev]
[ 2106.261845]        v4l2_ioctl+0xa4/0xdc [videodev]
[ 2106.266596]        do_vfs_ioctl+0xa0/0xa18
[ 2106.270667]        SyS_ioctl+0x34/0x5c
[ 2106.274395]        ret_fast_syscall+0x0/0x28
[ 2106.278637]
[ 2106.278637] -> #0 (&dev->mfc_mutex){+.+.}:
[ 2106.284186]        lock_acquire+0x6c/0x88
[ 2106.288173]        __mutex_lock+0x68/0xa34
[ 2106.292244]        mutex_lock_interruptible_nested+0x1c/0x24
[ 2106.297893]        s5p_mfc_mmap+0x28/0xd4 [s5p_mfc]
[ 2106.302747]        v4l2_mmap+0x54/0x88 [videodev]
[ 2106.307409]        mmap_region+0x3a8/0x638
[ 2106.311480]        do_mmap+0x330/0x3a4
[ 2106.315207]        vm_mmap_pgoff+0x90/0xb8
[ 2106.319279]        SyS_mmap_pgoff+0x90/0xc0
[ 2106.323439]        ret_fast_syscall+0x0/0x28
[ 2106.327683]
[ 2106.327683] other info that might help us debug this:
[ 2106.327683]
[ 2106.335656]  Possible unsafe locking scenario:
[ 2106.335656]
[ 2106.341548]        CPU0                    CPU1
[ 2106.346053]        ----                    ----
[ 2106.350559]   lock(&mm->mmap_sem);
[ 2106.353939]                                lock(&dev->mfc_mutex);
[ 2106.353939]                                lock(&dev->mfc_mutex);
[ 2106.365897]   lock(&dev->mfc_mutex);
[ 2106.369450]
[ 2106.369450]  *** DEADLOCK ***
[ 2106.369450]
[ 2106.375344] 1 lock held by qtdemux0:sink/2614:
[ 2106.379762]  #0:  (&mm->mmap_sem){++++}, at: [<c01df2e4>] vm_mmap_pgoff+0x44/0xb8
[ 2106.387214]
[ 2106.387214] stack backtrace:
[ 2106.391550] CPU: 7 PID: 2614 Comm: qtdemux0:sink Not tainted 4.14.0-rc2-00002-gfab205f-dirty #4
[ 2106.400213] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[ 2106.406285] [<c01102c8>] (unwind_backtrace) from [<c010cabc>] (show_stack+0x10/0x14)
[ 2106.413995] [<c010cabc>] (show_stack) from [<c08543a4>] (dump_stack+0x98/0xc4)
[ 2106.421187] [<c08543a4>] (dump_stack) from [<c016b2fc>] (print_circular_bug+0x254/0x410)
[ 2106.429245] [<c016b2fc>] (print_circular_bug) from [<c016c580>] (check_prev_add+0x468/0x938)
[ 2106.437651] [<c016c580>] (check_prev_add) from [<c016f4dc>] (__lock_acquire+0x1314/0x14fc)
[ 2106.445883] [<c016f4dc>] (__lock_acquire) from [<c016fefc>] (lock_acquire+0x6c/0x88)
[ 2106.453596] [<c016fefc>] (lock_acquire) from [<c0869fb4>] (__mutex_lock+0x68/0xa34)
[ 2106.461221] [<c0869fb4>] (__mutex_lock) from [<c086aa08>] (mutex_lock_interruptible_nested+0x1c/0x24)
[ 2106.470425] [<c086aa08>] (mutex_lock_interruptible_nested) from [<bf175544>] (s5p_mfc_mmap+0x28/0xd4 [s5p_mfc])
[ 2106.480494] [<bf175544>] (s5p_mfc_mmap [s5p_mfc]) from [<bf037120>] (v4l2_mmap+0x54/0x88 [videodev])
[ 2106.489575] [<bf037120>] (v4l2_mmap [videodev]) from [<c01f4798>] (mmap_region+0x3a8/0x638)
[ 2106.497875] [<c01f4798>] (mmap_region) from [<c01f4d58>] (do_mmap+0x330/0x3a4)
[ 2106.505068] [<c01f4d58>] (do_mmap) from [<c01df330>] (vm_mmap_pgoff+0x90/0xb8)
[ 2106.512260] [<c01df330>] (vm_mmap_pgoff) from [<c01f28cc>] (SyS_mmap_pgoff+0x90/0xc0)
[ 2106.520059] [<c01f28cc>] (SyS_mmap_pgoff) from [<c0108820>] (ret_fast_syscall+0x0/0x28)

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Suggested-by: Hans Verkuil <hansverk@cisco.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-11-07 05:44:48 -05:00