[media] v4l: omap4iss: Remove iss_video streaming field

The vb2 queue already keeps track of the streaming state, there's no
need to duplicate that in the driver.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/media/omap4iss/iss_video.c

@@ -743,11 +743,6 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
 
 	mutex_lock(&video->stream_lock);
 
-	if (video->streaming) {
-		mutex_unlock(&video->stream_lock);
-		return -EBUSY;
-	}
-
 	/* Start streaming on the pipeline. No link touching an entity in the
 	 * pipeline can be activated or deactivated once streaming is started.
 	 */
@@ -842,9 +837,6 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
 		video->queue = NULL;
 	}
 
-	if (!ret)
-		video->streaming = 1;
-
 	mutex_unlock(&video->stream_lock);
 	return ret;
 }
@@ -882,7 +874,6 @@ iss_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
 	omap4iss_pipeline_set_stream(pipe, ISS_PIPELINE_STREAM_STOPPED);
 	vb2_streamoff(&vfh->queue, type);
 	video->queue = NULL;
-	video->streaming = 0;
 
 	if (video->iss->pdata->set_constraints)
 		video->iss->pdata->set_constraints(video->iss, false);

drivers/staging/media/omap4iss/iss_video.h

@@ -156,9 +156,6 @@ struct iss_video {
 	unsigned int bpl_value;		/* bytes per line value */
 	unsigned int bpl_padding;	/* padding at end of line */
 
-	/* Entity video node streaming */
-	unsigned int streaming:1;
-
 	/* Pipeline state */
 	struct iss_pipeline pipe;
 	struct mutex stream_lock;	/* pipeline and stream states */