Commit Graph

468403 Commits

Author SHA1 Message Date
Mauro Carvalho Chehab
24ab6338f3 [media] vpif_capture: get rid of some unused vars
drivers/media/platform/davinci/vpif_capture.c: In function 'vpif_channel_isr':
drivers/media/platform/davinci/vpif_capture.c:376:18: warning: variable 'field'
 set but not used [-Wunused-but-set-variable]
  enum v4l2_field field;
                  ^
drivers/media/platform/davinci/vpif_capture.c: In function 'vpif_calculate_offs
ets':
drivers/media/platform/davinci/vpif_capture.c:536:23: warning: variable 'vpitch
' set but not used [-Wunused-but-set-variable]
  unsigned int hpitch, vpitch, sizeimage;
                       ^

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-26 18:51:58 -03:00
Mauro Carvalho Chehab
a4f20e2fbc [media] vpif_display: get rid of some unused vars
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_channel_isr':
drivers/media/platform/davinci/vpif_display.c:363:18: warning: variable 'field'
 set but not used [-Wunused-but-set-variable]
  enum v4l2_field field;
                  ^
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_calculate_offs
ets':
drivers/media/platform/davinci/vpif_display.c:505:23: warning: variable 'vpitch
' set but not used [-Wunused-but-set-variable]
  unsigned int hpitch, vpitch, sizeimage;
                       ^
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_set_output':
drivers/media/platform/davinci/vpif_display.c:816:27: warning: variable 'subdev
_info' set but not used [-Wunused-but-set-variable]
  struct vpif_subdev_info *subdev_info = NULL;

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-26 18:51:57 -03:00
Randy Dunlap
b250392f7b [media] media: ttpci: fix av7110 build to be compatible with CONFIG_INPUT_EVDEV
Fix build when CONFIG_INPUT_EVDEV=m and DVB_AV7110=y.
Only build av7110_ir.c when CONFIG_INPUT_EVDEV is compatible with
CONFIG_DVB_AV7110.

Fixes these build errors:

drivers/built-in.o: In function `input_sync':
av7110_ir.c:(.text+0x1223ac): undefined reference to `input_event'
drivers/built-in.o: In function `av7110_emit_key':
av7110_ir.c:(.text+0x12247c): undefined reference to `input_event'
av7110_ir.c:(.text+0x122495): undefined reference to `input_event'
av7110_ir.c:(.text+0x122569): undefined reference to `input_event'
av7110_ir.c:(.text+0x1225a7): undefined reference to `input_event'
drivers/built-in.o:av7110_ir.c:(.text+0x122629): more undefined
references to `input_event' follow
drivers/built-in.o: In function `av7110_ir_init':
(.text+0x1227e4): undefined reference to `input_allocate_device'
drivers/built-in.o: In function `av7110_ir_init':
(.text+0x12298f): undefined reference to `input_register_device'
drivers/built-in.o: In function `av7110_ir_init':
(.text+0x12299e): undefined reference to `input_free_device'
drivers/built-in.o: In function `av7110_ir_exit':
(.text+0x122a94): undefined reference to `input_unregister_device'

drivers/built-in.o: In function `av7110_detach':
av7110.c:(.text+0x228d4a): undefined reference to `av7110_ir_exit'
drivers/built-in.o: In function `arm_thread':
av7110.c:(.text+0x22a404): undefined reference to `av7110_check_ir_config'
av7110.c:(.text+0x22a626): undefined reference to `av7110_check_ir_config'
drivers/built-in.o: In function `av7110_attach':
av7110.c:(.text+0x22b08c): undefined reference to `av7110_ir_init'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Jim Davis <jim.epost@gmail.com>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:38 -05:00
Mauro Carvalho Chehab
85c1abcb52 [media] usbtv: Make it dependent on ALSA
Now that alsa code is part of the driver, it can be compiled
only if alsa is enabled.

   drivers/built-in.o: In function `snd_usbtv_hw_free':
>> usbtv-audio.c:(.text+0x21eb55): undefined reference to `snd_pcm_lib_free_pages'
   drivers/built-in.o: In function `snd_usbtv_hw_params':
>> usbtv-audio.c:(.text+0x21eb72): undefined reference to `snd_pcm_lib_malloc_pages'
   drivers/built-in.o: In function `usbtv_audio_urb_received':
>> usbtv-audio.c:(.text+0x21ed66): undefined reference to `snd_pcm_link_rwlock'
>> usbtv-audio.c:(.text+0x21ed9f): undefined reference to `snd_pcm_link_rwlock'
>> usbtv-audio.c:(.text+0x21edf5): undefined reference to `snd_pcm_period_elapsed'
   drivers/built-in.o: In function `usbtv_audio_init':
>> (.text+0x21f00a): undefined reference to `snd_card_new'
   drivers/built-in.o: In function `usbtv_audio_init':
>> (.text+0x21f0a2): undefined reference to `snd_pcm_new'
   drivers/built-in.o: In function `usbtv_audio_init':
>> (.text+0x21f0e5): undefined reference to `snd_pcm_set_ops'
   drivers/built-in.o: In function `usbtv_audio_init':
>> (.text+0x21f103): undefined reference to `snd_pcm_lib_preallocate_pages_for_all'
   drivers/built-in.o: In function `usbtv_audio_init':
>> (.text+0x21f10c): undefined reference to `snd_card_register'
   drivers/built-in.o: In function `usbtv_audio_init':
>> (.text+0x21f12a): undefined reference to `snd_card_free'
   drivers/built-in.o: In function `usbtv_audio_free':
>> (.text+0x21f15c): undefined reference to `snd_card_free'
>> drivers/built-in.o:(.data+0x43250): undefined reference to `snd_pcm_lib_ioctl'

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:38 -05:00
Shuah Khan
66cae53024 [media] media: fix au0828 dvb suspend/resume to call dvb_frontend_suspend/resume
au0828 doesn't resume correctly and TV tuning fails with
xc_set_signal_source(0) failed message. Change au0828 dvb
suspend and resume interfaces to suspend and resume frontend
during suspend and resume respectively. dvb_frontend_suspend()
suspends tuner and fe using tuner and fe ops. dvb_frontend_resume()
resumes fe and tuner using fe and tuner ops ini before waking up
the frontend. With this change HVR950Q suspend and resume work
when system gets suspended when digital function is tuned to a
channel and with active TV stream, and after resume it went right
back to active TV stream.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:38 -05:00
Frank Schaefer
662c97cf8f [media] em28xx-v4l: fix video buffer field order reporting in progressive mode
The correct field order in progressive mode is V4L2_FIELD_NONE, not V4L2_FIELD_INTERLACED.

Cc: <stable@vger.kernel.org>
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:38 -05:00
Frank Schaefer
627530c32a [media] em28xx-v4l: give back all active video buffers to the vb2 core properly on streaming stop
When a new video frame is started, the driver takes the next video buffer from
the list of active buffers and moves it to dev->usb_ctl.vid_buf / dev->usb_ctl.vbi_buf
for further processing.

On streaming stop we currently only give back the pending buffers from the list
but not the ones which are currently processed.

This causes the following warning from the vb2 core since kernel 3.15:

...
 ------------[ cut here ]------------
 WARNING: CPU: 1 PID: 2284 at drivers/media/v4l2-core/videobuf2-core.c:2115 __vb2_queue_cancel+0xed/0x150 [videobuf2_core]()
 [...]
 Call Trace:
  [<c0769c46>] dump_stack+0x48/0x69
  [<c0245b69>] warn_slowpath_common+0x79/0x90
  [<f925e4ad>] ? __vb2_queue_cancel+0xed/0x150 [videobuf2_core]
  [<f925e4ad>] ? __vb2_queue_cancel+0xed/0x150 [videobuf2_core]
  [<c0245bfd>] warn_slowpath_null+0x1d/0x20
  [<f925e4ad>] __vb2_queue_cancel+0xed/0x150 [videobuf2_core]
  [<f925fa35>] vb2_internal_streamoff+0x35/0x90 [videobuf2_core]
  [<f925fac5>] vb2_streamoff+0x35/0x60 [videobuf2_core]
  [<f925fb27>] vb2_ioctl_streamoff+0x37/0x40 [videobuf2_core]
  [<f8e45895>] v4l_streamoff+0x15/0x20 [videodev]
  [<f8e4925d>] __video_do_ioctl+0x23d/0x2d0 [videodev]
  [<f8e49020>] ? video_ioctl2+0x20/0x20 [videodev]
  [<f8e48c63>] video_usercopy+0x203/0x5a0 [videodev]
  [<f8e49020>] ? video_ioctl2+0x20/0x20 [videodev]
  [<c039d0e7>] ? fsnotify+0x1e7/0x2b0
  [<f8e49012>] video_ioctl2+0x12/0x20 [videodev]
  [<f8e49020>] ? video_ioctl2+0x20/0x20 [videodev]
  [<f8e4461e>] v4l2_ioctl+0xee/0x130 [videodev]
  [<f8e44530>] ? v4l2_open+0xf0/0xf0 [videodev]
  [<c0378de2>] do_vfs_ioctl+0x2e2/0x4d0
  [<c0368eec>] ? vfs_write+0x13c/0x1c0
  [<c0369a8f>] ? vfs_writev+0x2f/0x50
  [<c0379028>] SyS_ioctl+0x58/0x80
  [<c076fff3>] sysenter_do_call+0x12/0x12
 ---[ end trace 5545f934409f13f4 ]---
...

Many thanks to Hans Verkuil, whose recently added check in the vb2 core unveiled
this long standing issue and who has investigated it further.

Cc: <stable@vger.kernel.org>
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:37 -05:00
Axel Lin
c0d04f4026 [media] via-camera: Include media/v4l2-image-sizes.h
So we can remove the same defines in the driver code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:37 -05:00
Axel Lin
7c5a62e1ee [media] sh_veu: Include media/v4l2-image-sizes.h
So we can remove the same defines in the driver code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:37 -05:00
Axel Lin
91ba0e59ba [media] tda7432: Fix setting TDA7432_MUTE bit for TDA7432_RF register
Fix a copy-paste bug when converting to the control framework.

Fixes: commit 5d478e0de8 ("[media] tda7432: convert to the control framework")

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:36 -05:00
Axel Lin
a14e55190b [media] soc_camera: ov772x: Include media/v4l2-image-sizes.h
So we can remove the same defines in the driver code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:36 -05:00
Axel Lin
665152a4fb [media] soc_camera: mt9t112: Include media/v4l2-image-sizes.h
So we can remove the same defines in the driver code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:36 -05:00
Axel Lin
37096b476b [media] vs6624: Include media/v4l2-image-sizes.h
So we can remove the same defines in the driver code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:36 -05:00
Axel Lin
4721b3eb66 [media] ov7670: Include media/v4l2-image-sizes.h
So we can remove the same defines in the driver code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:35 -05:00
Sakari Ailus
6e533c01a8 [media] v4l: Event documentation fixes
Constify event type constants and correct motion detection event number
(it's 6, not 5).

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:35 -05:00
Ulrich Eckhardt
6ddc2be511 [media] imon: Fix not working front panel
Make the front panel buttons working after another button on the
remote was pressed.

Signed-off-by: Ulrich Eckhardt <uli@uli-eckhardt.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:35 -05:00
Ulrich Eckhardt
7b5fc07149 [media] imon: Add internal key table for 15c2:0034
Add the key table for the Thermaltake DH-102 to the USB-Id 15c2:0034.

Signed-off-by: Ulrich Eckhardt <uli@uli-eckhardt.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:34 -05:00
Ulrich Eckhardt
0d8053f2ac [media] imon: Define keytables per USB Device Id
This patch defines the keytables per USB Device ID.

Signed-off-by: Ulrich Eckhardt <uli@uli-eckhardt.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:34 -05:00
Vitaly Osipov
d4b3264646 [media] staging: omap4iss: copy paste error in iss_get_clocks
It makes more sense to return PTR_ERR(iss->iss_ctrlclk) here. The
current code looks like an oversight in pasting the block just above
this one.

Signed-off-by: Vitaly Osipov <vitaly.osipov@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:34 -05:00
Federico Simoncelli
63ddf68de5 [media] usbtv: add audio support
Add an ALSA handler inside usbtv module, in order to make
audio to work with those devices.

Signed-off-by: Federico Simoncelli <fsimonce@redhat.com>
Tested-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:34 -05:00
Andreas Ruprecht
c8fa50549d [media] drivers: media: pci: Makefile: Remove duplicate subdirectory from obj-y
In the list of subdirectories compiled, b2c2/ appears twice.

This patch removes one of the appearances.

Signed-off-by: Andreas Ruprecht <rupran@einserver.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:33 -05:00
Axel Lin
6af6e9c84f [media] saa6752hs: Convert to devm_kzalloc()
Using the managed function the kfree() calls can be removed from the
probe error path and the remove handler.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:33 -05:00
Geert Uytterhoeven
43e9d4ab0c [media] cx23885: Spelling s/compuations/computations/
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:33 -05:00
Geert Uytterhoeven
d720b7aff6 [media] cx25840: Spelling s/compuations/computations/
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:32 -05:00
Hans Verkuil
0821344d9e [media] vb2: use pr_info instead of pr_debug
Modern kernels enable dynamic printk support, which is fine, except when it is
combined with a debug module option. Enabling debug in videobuf2-core now produces
no debugging unless it is also enabled through the dynamic printk support in debugfs.

Either use a debug module option + pr_info, or use pr_debug without a debug module
option. In this case the fact that you can set various debug levels is very useful,
so I believe that for videobuf2-core.c we should use pr_info.

The mix of the two is very confusing: I've spent too much time already trying to
figure out why I am not seeing any debug output in the kernel log when I do:

	echo 1 >/sys/modules/videobuf2_core/parameters/debug

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:32 -05:00
Hans Verkuil
83acb75d0d [media] DocBook media: fix order of v4l2_edid fields
The order of the last two fields in the G/S_EDID specification was swapped from
what is in the actual struct. Fix this.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:32 -05:00
Hans Verkuil
f035eb4e97 [media] videobuf2: fix lockdep warning
The following lockdep warning has been there ever since commit a517cca6b2
one year ago:

[  403.117947] ======================================================
[  403.117949] [ INFO: possible circular locking dependency detected ]
[  403.117953] 3.16.0-rc6-test-media #961 Not tainted
[  403.117954] -------------------------------------------------------
[  403.117956] v4l2-ctl/15377 is trying to acquire lock:
[  403.117959]  (&dev->mutex#3){+.+.+.}, at: [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[  403.117974]
[  403.117974] but task is already holding lock:
[  403.117976]  (&mm->mmap_sem){++++++}, at: [<ffffffff8118291f>] vm_mmap_pgoff+0x6f/0xc0
[  403.117987]
[  403.117987] which lock already depends on the new lock.
[  403.117987]
[  403.117990]
[  403.117990] the existing dependency chain (in reverse order) is:
[  403.117992]
[  403.117992] -> #1 (&mm->mmap_sem){++++++}:
[  403.117997]        [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0
[  403.118006]        [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30
[  403.118010]        [<ffffffff810d9da7>] lock_acquire+0xa7/0x160
[  403.118014]        [<ffffffff8118c9ec>] might_fault+0x7c/0xb0
[  403.118018]        [<ffffffffa0028a25>] video_usercopy+0x425/0x610 [videodev]
[  403.118028]        [<ffffffffa0028c25>] video_ioctl2+0x15/0x20 [videodev]
[  403.118034]        [<ffffffffa0022764>] v4l2_ioctl+0x184/0x1a0 [videodev]
[  403.118040]        [<ffffffff811d77d0>] do_vfs_ioctl+0x2f0/0x4f0
[  403.118307]        [<ffffffff811d7a51>] SyS_ioctl+0x81/0xa0
[  403.118311]        [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b
[  403.118319]
[  403.118319] -> #0 (&dev->mutex#3){+.+.+.}:
[  403.118324]        [<ffffffff810d6a96>] check_prevs_add+0x746/0x9f0
[  403.118329]        [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0
[  403.118333]        [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30
[  403.118336]        [<ffffffff810d9da7>] lock_acquire+0xa7/0x160
[  403.118340]        [<ffffffff81999664>] mutex_lock_interruptible_nested+0x64/0x640
[  403.118344]        [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[  403.118349]        [<ffffffffa0022122>] v4l2_mmap+0x62/0xa0 [videodev]
[  403.118354]        [<ffffffff81197270>] mmap_region+0x3d0/0x5d0
[  403.118359]        [<ffffffff8119778d>] do_mmap_pgoff+0x31d/0x400
[  403.118363]        [<ffffffff81182940>] vm_mmap_pgoff+0x90/0xc0
[  403.118366]        [<ffffffff81195cef>] SyS_mmap_pgoff+0x1df/0x2a0
[  403.118369]        [<ffffffff810085c2>] SyS_mmap+0x22/0x30
[  403.118376]        [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b
[  403.118381]
[  403.118381] other info that might help us debug this:
[  403.118381]
[  403.118383]  Possible unsafe locking scenario:
[  403.118383]
[  403.118385]        CPU0                    CPU1
[  403.118387]        ----                    ----
[  403.118388]   lock(&mm->mmap_sem);
[  403.118391]                                lock(&dev->mutex#3);
[  403.118394]                                lock(&mm->mmap_sem);
[  403.118397]   lock(&dev->mutex#3);
[  403.118400]
[  403.118400]  *** DEADLOCK ***
[  403.118400]
[  403.118403] 1 lock held by v4l2-ctl/15377:
[  403.118405]  #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff8118291f>] vm_mmap_pgoff+0x6f/0xc0
[  403.118411]
[  403.118411] stack backtrace:
[  403.118415] CPU: 0 PID: 15377 Comm: v4l2-ctl Not tainted 3.16.0-rc6-test-media #961
[  403.118418] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013
[  403.118420]  ffffffff82a6c9d0 ffff8800af37fb00 ffffffff819916a2 ffffffff82a6c9d0
[  403.118425]  ffff8800af37fb40 ffffffff810d5715 ffff8802308e4200 0000000000000000
[  403.118429]  ffff8802308e4a48 ffff8802308e4a48 ffff8802308e4200 0000000000000001
[  403.118433] Call Trace:
[  403.118441]  [<ffffffff819916a2>] dump_stack+0x4e/0x7a
[  403.118445]  [<ffffffff810d5715>] print_circular_bug+0x1d5/0x2a0
[  403.118449]  [<ffffffff810d6a96>] check_prevs_add+0x746/0x9f0
[  403.118455]  [<ffffffff8119c172>] ? find_vmap_area+0x42/0x70
[  403.118459]  [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0
[  403.118463]  [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30
[  403.118468]  [<ffffffff810d9da7>] lock_acquire+0xa7/0x160
[  403.118472]  [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[  403.118476]  [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[  403.118480]  [<ffffffff81999664>] mutex_lock_interruptible_nested+0x64/0x640
[  403.118484]  [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[  403.118488]  [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[  403.118493]  [<ffffffff810d8055>] ? mark_held_locks+0x75/0xa0
[  403.118497]  [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[  403.118502]  [<ffffffffa0022122>] v4l2_mmap+0x62/0xa0 [videodev]
[  403.118506]  [<ffffffff81197270>] mmap_region+0x3d0/0x5d0
[  403.118510]  [<ffffffff8119778d>] do_mmap_pgoff+0x31d/0x400
[  403.118513]  [<ffffffff81182940>] vm_mmap_pgoff+0x90/0xc0
[  403.118517]  [<ffffffff81195cef>] SyS_mmap_pgoff+0x1df/0x2a0
[  403.118521]  [<ffffffff810085c2>] SyS_mmap+0x22/0x30
[  403.118525]  [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b

The reason is that vb2_fop_mmap and vb2_fop_get_unmapped_area take the core lock
while they are called with the mmap_sem semaphore held. But elsewhere in the code
the core lock is taken first but calls to copy_to/from_user() can take the mmap_sem
semaphore as well, potentially causing a classical A-B/B-A deadlock.

However, the mmap/get_unmapped_area calls really shouldn't take the core lock
at all. So what would happen if they don't take the core lock anymore?

There are two situations that need to be taken into account: calling mmap while
new buffers are being added and calling mmap while buffers are being deleted.

The first case works almost fine without a lock: in all cases mmap relies on
correctly filled-in q->num_buffers/q->num_planes values and those are only
updated by reqbufs and create_buffers *after* any new buffers have been
initialized completely. Except in one case: if an error occurred while allocating
the buffers it will increase num_buffers and rely on __vb2_queue_free to
decrease it again. So there is a short period where the buffer information
may be wrong.

The second case definitely does pose a problem: buffers may be in the process
of being deleted, without the internal structure being updated.

In order to fix this a new mutex is added to vb2_queue that is taken when
buffers are allocated or deleted, and in vb2_mmap. That way vb2_mmap won't
get stale buffer data. Note that this is a problem only for MEMORY_MMAP, so
even though __qbuf_userptr and __qbuf_dmabuf also mess around with buffers
(mem_priv in particular), this doesn't clash with vb2_mmap or
vb2_get_unmapped_area since those are MMAP specific.

As an additional bonus the hack in __buf_prepare, the USERPTR case, can be
removed as well since mmap() no longer takes the core lock.

All in all a much cleaner solution.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:31 -05:00
Dan Carpenter
23d3090f8b [media] vmalloc_sg: off by one in error handling
The "i--" needs to happen at the start of the loop or it will try to
release something bogus (probably it will crash) and it won't release
the first ->vaddr_page[].

Fixes: 7b4eeed174 ('[media] vmalloc_sg: make sure all pages in vmalloc area are really DMA-ready')

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:31 -05:00
Mauro Carvalho Chehab
5b6aa19919 [media] as102-fe: Add a release function
This is needed to free state and for dvb_detach() to be
called.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:31 -05:00
Mauro Carvalho Chehab
4628f993bf [media] as102: add missing viterbi lock
In order to get FE_HAS_SYNC, the viterbi should already be
locked too. So, add the missing FE_HAS_VITERBI lock.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:31 -05:00
Mauro Carvalho Chehab
dcae778148 [media] as102-fe: make it an independent driver
Move as102-fe to dvb-frontends directory and make it an
independent driver.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:30 -05:00
Mauro Carvalho Chehab
47f79129ec [media] as102: prepare as102_fe to be compiled as a module
Remove the dependencies of as102_cmd from as102, in order to
allow it to be compiled as a separate module.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:30 -05:00
Mauro Carvalho Chehab
c098c219b0 [media] as102: get rid of as10x_fe_copy_tps_parameters()
This function just converts from the as10x internal data into
the DVBv5 cache. Get rid of it.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:30 -05:00
Mauro Carvalho Chehab
1d6207fd2c [media] as102: get rid of as102_fe_copy_tune_parameters()
This function just parses the frontend cache and converts
to the as102 internal format message. Get rid of it.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:29 -05:00
Mauro Carvalho Chehab
b601d9a5d6 [media] as102: Move ancillary routines to the beggining
Avoid having function prototypes by moving some
ancillary routines to the beginning of the file.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:29 -05:00
Mauro Carvalho Chehab
d8eb070b66 [media] as102: better name the unknown frontend
Make the frontend .name more coherent with DVB namespace.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:29 -05:00
Mauro Carvalho Chehab
1d5c2bb1f9 [media] as102: CodingStyle fixes
Fix this warning:

WARNING: quoted string split across lines
566: FILE: drivers/media/usb/as102/as102_fe.c:141:
+				"demod status: fc: 0x%08x, bad fc: 0x%08x, "
+				"bytes corrected: 0x%08x , MER: 0x%04x\n",

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:29 -05:00
Mauro Carvalho Chehab
1f2563d68c [media] as102: get rid of FSF mail address
Make checkpatch happier by removing FSF mail address.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:28 -05:00
Mauro Carvalho Chehab
d6317c68f3 [media] as102: promote it out of staging
This driver is stable and doesn't contain any really serious
issue. Move it out of staging.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:28 -05:00
Martin Kepplinger
2179de602c [media] staging: media: as102: replace custom dprintk() with dev_dbg()
remove dprintk() and replace it with dev_dbg() or pr_debug()
in order to use the common kernel coding style.

Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:28 -05:00
Mauro Carvalho Chehab
29bbb7bd0a [media] siano: add support for PCTV 77e
Add support for PCTV microStick (77e) device that uses a sms1140
chipset.

Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:27 -05:00
Sakari Ailus
a328e7e3fd [media] smiapp: Set 64-bit integer control using v4l2_ctrl_s_ctrl_int64()
Don't manipulate struct v4l2_ctrl directly. Instead, use
v4l2_ctrl_s_ctrl_int64() to change the values.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:27 -05:00
Sakari Ailus
e47a81d888 [media] smiapp: Use unlocked __v4l2_ctrl_modify_range()
Instead of modifying the control ranges directly by manipulating struct
v4l2_ctrl, use __v4l2_ctrl_modify_range() for the purpose.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:27 -05:00
Philipp Zabel
f23797b636 [media] coda: checkpatch cleanup
This patch breaks most long lines, concatenates broken up text strings,
and adds or removes parentheses where needed to make checkpatch happy.
The long codec list lines and a few 81-wide lines remain.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:26 -05:00
Philipp Zabel
a188a668dd [media] coda: disable old cropping ioctls
Since we neither support composing on the OUTPUT side, nor cropping
on the CAPTURE side, disable VIDIOC_CROPCAP and VIDIOC_G/S_CROP
altogether. This silences a GStreamer warning when GStreamer tries
to obtain the pixel aspect ratio using VIDIOC_CROPCAP.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:26 -05:00
Philipp Zabel
f95a6ce167 [media] coda: set capture frame size with output S_FMT
This patch makes coda_s_fmt_vid_out propagate the output frame size
to the capture side.
The GStreamer v4l2videodec only ever calls S_FMT on the output side
and then expects G_FMT on the capture side to return a valid format.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:26 -05:00
Philipp Zabel
2dc546d00c [media] coda: fix coda_s_fmt_vid_out
Set the context color space when s_fmt succeeded, not when it failed.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:26 -05:00
Philipp Zabel
18fd0cceb9 [media] coda: fix timestamp list handling
Lock modification of the timestamp list with bitstream_mutex and do not
try to remove a timestamp element if the list is empty. This can happen
if the userspace feeds us garbage or multiple encoded frames in a single
buffer.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:25 -05:00
Philipp Zabel
68fc31c5d2 [media] coda: improve allocation error messages
Produce some error messages when internal buffer allocation
fails, for example because the CMA region is too small.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:25 -05:00
Philipp Zabel
d60b18ba31 [media] coda: add an intermediate debug level
Dumping all register accesses drowns other debugging messages
in the log. Add a less verbose debug level.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-08-21 15:25:25 -05:00