Hello,
On Wednesday, July 13, 2011 11:39 AM Hans Verkuil wrote:
> From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
>
> Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Acked-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> drivers/media/video/videobuf2-core.c | 7 +++++--
> 1 files changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/video/videobuf2-core.c
> b/drivers/media/video/videobuf2-core.c
> index 3015e60..1892bb8 100644
> --- a/drivers/media/video/videobuf2-core.c
> +++ b/drivers/media/video/videobuf2-core.c
> @@ -1365,6 +1365,7 @@ static int __vb2_cleanup_fileio(struct vb2_queue *q);
> */
> unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table
> *wait)
> {
> + unsigned long req_events = poll_requested_events(wait);
> unsigned long flags;
> unsigned int ret;
> struct vb2_buffer *vb = NULL;
> @@ -1373,12 +1374,14 @@ unsigned int vb2_poll(struct vb2_queue *q, struct
> file *file, poll_table *wait)
> * Start file I/O emulator only if streaming API has not been used
> yet.
> */
> if (q->num_buffers == 0 && q->fileio == NULL) {
> - if (!V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_READ))
> {
> + if (!V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_READ)
> &&
> + (req_events & (POLLIN | POLLRDNORM))) {
> ret = __vb2_init_fileio(q, 1);
> if (ret)
> return POLLERR;
> }
> - if (V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_WRITE))
> {
> + if (V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_WRITE)
> &&
> + (req_events & (POLLOUT | POLLWRNORM))) {
> ret = __vb2_init_fileio(q, 0);
> if (ret)
> return POLLERR;
> --
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
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