From c18f17c24f8eaf3eaae67f0f7e24de6dbe523aa3 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Wed, 13 Jul 2011 11:03:52 +0200 Subject: [PATCH] videobuf: only start streaming in poll() if so requested by the poll mask. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/videobuf-core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/videobuf-core.c b/drivers/media/video/videobuf-core.c index de4fa4eb8844..ffdf59cfe405 100644 --- a/drivers/media/video/videobuf-core.c +++ b/drivers/media/video/videobuf-core.c @@ -1129,6 +1129,7 @@ unsigned int videobuf_poll_stream(struct file *file, struct videobuf_queue *q, poll_table *wait) { + unsigned long req_events = poll_requested_events(wait); struct videobuf_buffer *buf = NULL; unsigned int rc = 0; @@ -1137,7 +1138,7 @@ unsigned int videobuf_poll_stream(struct file *file, if (!list_empty(&q->stream)) buf = list_entry(q->stream.next, struct videobuf_buffer, stream); - } else { + } else if (req_events & (POLLIN | POLLRDNORM)) { if (!q->reading) __videobuf_read_start(q); if (!q->reading) { -- 2.39.5