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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2010-03-31 12:29:26 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-18 00:52:52 -0300 |
| commit | ed3de6015a920c131fbcc770fb95097fde592d86 (patch) | |
| tree | 0dcf1e935719a6766fb156c79acb4b6c400b48d4 | |
| parent | 35a00c41ea8b280cb629503c735daf20cdf0f9f8 (diff) | |
| download | kernel_samsung_smdk4412-ed3de6015a920c131fbcc770fb95097fde592d86.zip kernel_samsung_smdk4412-ed3de6015a920c131fbcc770fb95097fde592d86.tar.gz kernel_samsung_smdk4412-ed3de6015a920c131fbcc770fb95097fde592d86.tar.bz2 | |
V4L/DVB: uvcvideo: Use POLLOUT and POLLWRNORM for output devices
The V4L2 specification requires drivers to use the write events in the
file operations poll handler for output devices. The uvcvideo driver
erroneously used read events for all devices. Fix this.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/uvc/uvc_queue.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/media/video/uvc/uvc_queue.c b/drivers/media/video/uvc/uvc_queue.c index 4a925a3..133c78d 100644 --- a/drivers/media/video/uvc/uvc_queue.c +++ b/drivers/media/video/uvc/uvc_queue.c @@ -388,8 +388,12 @@ unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file, poll_wait(file, &buf->wait, wait); if (buf->state == UVC_BUF_STATE_DONE || - buf->state == UVC_BUF_STATE_ERROR) - mask |= POLLIN | POLLRDNORM; + buf->state == UVC_BUF_STATE_ERROR) { + if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + mask |= POLLIN | POLLRDNORM; + else + mask |= POLLOUT | POLLWRNORM; + } done: mutex_unlock(&queue->mutex); |