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[media] ivtv: only start streaming in poll() if polling for input

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Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-02-03 05:12:18 -03:00 committed by Mauro Carvalho Chehab
parent 50953e0640
commit d0b66fdfd3
1 changed files with 4 additions and 2 deletions
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6
drivers/media/video/ivtv/ivtv-fileops.c
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@ -746,8 +746,9 @@ unsigned int ivtv_v4l2_dec_poll(struct file *filp, poll_table *wait)
return res;
}
unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait)
unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table *wait)
{
unsigned long req_events = poll_requested_events(wait);
struct ivtv_open_id *id = fh2id(filp->private_data);
struct ivtv *itv = id->itv;
struct ivtv_stream *s = &itv->streams[id->type];
@ -755,7 +756,8 @@ unsigned int ivtv_v4l2_enc_poll(struct file *filp, poll_table * wait)
unsigned res = 0;
/* Start a capture if there is none */
if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) {
if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags) &&
(req_events & (POLLIN | POLLRDNORM))) {
int rc;
rc = ivtv_start_capture(id);