diff options
| author | Michael Jones <michael.jones@matrix-vision.de> | 2012-06-27 12:06:57 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-11 15:55:28 -0300 |
| commit | b1e71f31cb315cdc3be5a861b2eaab7401b70295 (patch) | |
| tree | 115f5cb2c4eaee665c6579b33e21b865c05dde09 /drivers/media/video | |
| parent | 13eaaa7f2fa1d2bd247d68792bf187239a24a33f (diff) | |
[media] omap3isp: queue: Fix omap3isp_video_queue_dqbuf() description comment
Signed-off-by: Michael Jones <michael.jones@matrix-vision.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video')
| -rw-r--r-- | drivers/media/video/omap3isp/ispqueue.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/media/video/omap3isp/ispqueue.c b/drivers/media/video/omap3isp/ispqueue.c index 9bebb1e57aab..e912f0cbd6ef 100644 --- a/drivers/media/video/omap3isp/ispqueue.c +++ b/drivers/media/video/omap3isp/ispqueue.c @@ -908,13 +908,14 @@ done: * * This function is intended to be used as a VIDIOC_DQBUF ioctl handler. * - * The v4l2_buffer structure passed from userspace is first sanity tested. If - * sane, the buffer is then processed and added to the main queue and, if the - * queue is streaming, to the IRQ queue. + * Wait until a buffer is ready to be dequeued, remove it from the queue and + * copy its information to the v4l2_buffer structure. * - * Before being enqueued, USERPTR buffers are checked for address changes. If - * the buffer has a different userspace address, the old memory area is unlocked - * and the new memory area is locked. + * If the nonblocking argument is not zero and no buffer is ready, return + * -EAGAIN immediately instead of waiting. + * + * If no buffer has been enqueued, or if the requested buffer type doesn't match + * the queue type, return -EINVAL. */ int omap3isp_video_queue_dqbuf(struct isp_video_queue *queue, struct v4l2_buffer *vbuf, int nonblocking) |