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[media] videobuf: only start streaming in poll() if so requested by the poll mask
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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1 changed files with 2 additions and 1 deletions
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@ -1129,6 +1129,7 @@ unsigned int videobuf_poll_stream(struct file *file,
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struct videobuf_queue *q,
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poll_table *wait)
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{
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unsigned long req_events = poll_requested_events(wait);
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struct videobuf_buffer *buf = NULL;
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unsigned int rc = 0;
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@ -1137,7 +1138,7 @@ unsigned int videobuf_poll_stream(struct file *file,
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if (!list_empty(&q->stream))
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buf = list_entry(q->stream.next,
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struct videobuf_buffer, stream);
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} else {
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} else if (req_events & (POLLIN | POLLRDNORM)) {
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if (!q->reading)
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__videobuf_read_start(q);
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if (!q->reading) {
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