[media] gspca: Switch to V4L2 core locking, except for the buffer queuing ioctls

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Due to latency concerns the VIDIOC_QBUF, DQBUF and QUERYBUF do not use the
core lock, instead they rely only on queue_lock.

Changes by HdG:
1) Change release from the video_device to the v4l2_device, to avoid a
race on disconnect.
2) Adjust for the V4L2 core changes which cause non ioctl fops to no longer
take the V4L2 core lock.

[mchehab@redhat.com: fix a merge conflict]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

...

This commit is contained in:

Hans Verkuil 2012-05-06 09:28:27 -03:00 • committed by Mauro Carvalho Chehab

parent 254902b01d

commit a3d6e8cc0e

2 changed files with 82 additions and 182 deletions

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259

drivers/media/video/gspca/gspca.c

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7

drivers/media/video/gspca/gspca.h

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