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[media] saa7134: Fix crash when device is closed before streamoff

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pm_qos_remove_request was not called on video_release, resulting in the PM
core's list of requests being corrupted when the file handle was freed.
This has no immediate symptoms, but later in operation, the kernel will
panic as the PM core dereferences a dangling pointer.

Signed-off-by: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Simon Farnsworth 2013-09-20 13:15:28 -03:00 committed by Mauro Carvalho Chehab
parent f527b17ace
commit 9c9cff55bf
1 changed files with 1 additions and 0 deletions
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drivers/media/pci/saa7134/saa7134-video.c
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@ -1455,6 +1455,7 @@ static int video_release(struct file *file)
/* stop video capture */
if (res_check(fh, RESOURCE_VIDEO)) {
pm_qos_remove_request(&dev->qos_request);
videobuf_streamoff(&fh->cap);
res_free(dev,fh,RESOURCE_VIDEO);
}