diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2012-03-27 05:51:00 -0300 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-04-18 19:26:57 +0530 |
| commit | 00dcd785ac81bd4a6ca856ddd80bbb48b7f7177d (patch) | |
| tree | ebf37ffe83da52544e056a1a70f78acf0953a004 /sound/pci | |
| parent | e7b1b395d7e84bf023c546c02fac1727f5f6749d (diff) | |
[media] uvcvideo: Fix race-related crash in uvc_video_clock_update()
The driver frees the clock samples buffer before stopping the video
buffers queue. If a DQBUF call arrives in-between,
uvc_video_clock_update() will be called with a NULL clock samples
buffer, leading to a crash. This occurs very frequently when using the
webcam with the flash browser plugin.
Move clock initialization/cleanup to uvc_video_enable() in order to free
the clock samples buffer after the queue is stopped. Make sure the clock
is reset at resume time to avoid miscalculating timestamps.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'sound/pci')
0 files changed, 0 insertions, 0 deletions