From 9b558434136138edc79710385aaf613cb4b30459 Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Mon, 29 Mar 2010 05:16:31 -0300 Subject: [PATCH] V4L/DVB: videobuf: make poll() report proper flags for output video devices According to the V4L2 specification, poll() should set POLLOUT | POLLWRNORM flags for output devices after the frame has been displayed. Signed-off-by: Pawel Osciak Reviewed-by: Kyungmin Park Reviewed-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/videobuf-core.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c index f47cf1ca1239..7d3378437ded 100644 --- a/drivers/media/video/videobuf-core.c +++ b/drivers/media/video/videobuf-core.c @@ -1120,8 +1120,18 @@ unsigned int videobuf_poll_stream(struct file *file, if (0 == rc) { poll_wait(file, &buf->done, wait); if (buf->state == VIDEOBUF_DONE || - buf->state == VIDEOBUF_ERROR) - rc = POLLIN|POLLRDNORM; + buf->state == VIDEOBUF_ERROR) { + switch (q->type) { + case V4L2_BUF_TYPE_VIDEO_OUTPUT: + case V4L2_BUF_TYPE_VBI_OUTPUT: + case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: + rc = POLLOUT | POLLWRNORM; + break; + default: + rc = POLLIN | POLLRDNORM; + break; + } + } } mutex_unlock(&q->vb_lock); return rc;