V4L/DVB (13906): cx18: Start IDX streams automatically as an internal associated stream

This change starts the IDX stream along with the MPG stream as an internal
use (only) stream much like the VBI stream can be started as an internal use
stream for inserting sliced VBI packets.

The IDX stream is not started automatically with an MPEG strem if the IDX
stream is disabled (no buffers allocated) or if sliced VBI insertion is being
performed by the cx18 driver.  The cx18 driver doing sliced VBI insertion
makes the offsets in the IDX stream inaccurate for the final MPEG stream
presented to user space.  Since fixing the IDX offsets ourselves is not easy
and we cannot easily do what ivtv does to fix the offsets, we'll make sliced
VBI insertion and MPEG Index capture mutually exclusive for now.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c
index 304b6bc5121..9755f4416e9 100644
--- a/drivers/media/video/cx18/cx18-streams.c
+++ b/drivers/media/video/cx18/cx18-streams.c
@@ -356,13 +356,6 @@ void cx18_streams_cleanup(struct cx18 *cx, int unregister)
 	}
 }
 
-static inline bool cx18_stream_enabled(struct cx18_stream *s)
-{
-	return s->video_dev || s->dvb.enabled ||
-	       (s->type == CX18_ENC_STREAM_TYPE_IDX &&
-		s->cx->stream_buffers[CX18_ENC_STREAM_TYPE_IDX] != 0);
-}
-
 static void cx18_vbi_setup(struct cx18_stream *s)
 {
 	struct cx18 *cx = s->cx;