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path: root/drivers/media/video/saa7134/saa7134-video.c
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Diffstat (limited to 'drivers/media/video/saa7134/saa7134-video.c')
-rw-r--r--drivers/media/video/saa7134/saa7134-video.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c
index 493cad94146..e305c1674ce 100644
--- a/drivers/media/video/saa7134/saa7134-video.c
+++ b/drivers/media/video/saa7134/saa7134-video.c
@@ -1057,6 +1057,7 @@ static int buffer_prepare(struct videobuf_queue *q,
buf->vb.field = field;
buf->fmt = fh->fmt;
buf->pt = &fh->pt_cap;
+ dev->video_q.curr = NULL;
err = videobuf_iolock(q,&buf->vb,&dev->ovbuf);
if (err)
@@ -1423,11 +1424,13 @@ video_poll(struct file *file, struct poll_table_struct *wait)
{
struct saa7134_fh *fh = file->private_data;
struct videobuf_buffer *buf = NULL;
+ unsigned int rc = 0;
if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type)
return videobuf_poll_stream(file, &fh->vbi, wait);
if (res_check(fh,RESOURCE_VIDEO)) {
+ mutex_lock(&fh->cap.vb_lock);
if (!list_empty(&fh->cap.stream))
buf = list_entry(fh->cap.stream.next, struct videobuf_buffer, stream);
} else {
@@ -1446,13 +1449,14 @@ video_poll(struct file *file, struct poll_table_struct *wait)
}
if (!buf)
- return POLLERR;
+ goto err;
poll_wait(file, &buf->done, wait);
if (buf->state == VIDEOBUF_DONE ||
buf->state == VIDEOBUF_ERROR)
- return POLLIN|POLLRDNORM;
- return 0;
+ rc = POLLIN|POLLRDNORM;
+ mutex_unlock(&fh->cap.vb_lock);
+ return rc;
err:
mutex_unlock(&fh->cap.vb_lock);