V4L/DVB (6602): V4L: Convert videobuf drivers to videobuf_stop

Drivers were using cookie cutter code for stopping the read/stream.  Use the
new videobuf_stop function which is lock safe.
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/bt8xx/bttv-driver.c

@@ -3827,10 +3827,7 @@ static int bttv_release(struct inode *inode, struct file *file)
 
 	/* stop vbi capture */
 	if (check_btres(fh, RESOURCE_VBI)) {
-		if (fh->vbi.streaming)
-			videobuf_streamoff(&fh->vbi);
-		if (fh->vbi.reading)
-			videobuf_read_stop(&fh->vbi);
+		videobuf_stop(&fh->vbi);
 		free_btres(btv,fh,RESOURCE_VBI);
 	}
 

drivers/media/video/cx88/cx88-blackbird.c

@@ -1085,10 +1085,7 @@ static int mpeg_release(struct inode *inode, struct file *file)
 
 	cx8802_cancel_buffers(fh->dev);
 	/* stop mpeg capture */
-	if (fh->mpegq.streaming)
-		videobuf_streamoff(&fh->mpegq);
-	if (fh->mpegq.reading)
-		videobuf_read_stop(&fh->mpegq);
+	videobuf_stop(&fh->mpegq);
 
 	videobuf_mmap_free(&fh->mpegq);
 	file->private_data = NULL;

drivers/media/video/cx88/cx88-video.c

@@ -851,10 +851,7 @@ static int video_release(struct inode *inode, struct file *file)
 
 	/* stop vbi capture */
 	if (res_check(fh, RESOURCE_VBI)) {
-		if (fh->vbiq.streaming)
-			videobuf_streamoff(&fh->vbiq);
-		if (fh->vbiq.reading)
-			videobuf_read_stop(&fh->vbiq);
+		videobuf_stop(&fh->vbiq);
 		res_free(dev,fh,RESOURCE_VBI);
 	}
 

drivers/media/video/saa7134/saa7134-empress.c

@@ -110,11 +110,8 @@ static int ts_release(struct inode *inode, struct file *file)
 {
 	struct saa7134_dev *dev = file->private_data;
 
-	if (dev->empress_tsq.streaming)
-		videobuf_streamoff(&dev->empress_tsq);
 	mutex_lock(&dev->empress_tsq.lock);
-	if (dev->empress_tsq.reading)
-		videobuf_read_stop(&dev->empress_tsq);
+	videobuf_stop(&dev->empress_tsq);
 	videobuf_mmap_free(&dev->empress_tsq);
 	dev->empress_users--;
 

drivers/media/video/saa7134/saa7134-video.c

@@ -1445,10 +1445,7 @@ static int video_release(struct inode *inode, struct file *file)
 
 	/* stop vbi capture */
 	if (res_check(fh, RESOURCE_VBI)) {
-		if (fh->vbi.streaming)
-			videobuf_streamoff(&fh->vbi);
-		if (fh->vbi.reading)
-			videobuf_read_stop(&fh->vbi);
+		videobuf_stop(&fh->vbi);
 		res_free(dev,fh,RESOURCE_VBI);
 	}
 

drivers/media/video/vivi.c

@@ -1076,6 +1076,7 @@ static int vivi_release(struct inode *inode, struct file *file)
 	int minor = iminor(inode);
 
 	vivi_stop_thread(vidq);
+	videobuf_stop(&fh->vb_vidq);
 	videobuf_mmap_free(&fh->vb_vidq);
 
 	kfree (fh);