1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/media/dvb-core/dvb_demux.c b/drivers/media/dvb-core/dvb_demux.c
index 58de4410c525..25f3c6484610 100644
--- a/drivers/media/dvb-core/dvb_demux.c
+++ b/drivers/media/dvb-core/dvb_demux.c
@@ -1032,8 +1032,13 @@ static int dmx_section_feed_release_filter(struct dmx_section_feed *feed,
                 return -EINVAL;
         }
 
-        if (feed->is_filtering)
+        if (feed->is_filtering) {
+                /* release dvbdmx->mutex as far as 
+                   it is acquired by stop_filtering() itself */
+                mutex_unlock(&dvbdmx->mutex);
                 feed->stop_filtering(feed);
+                mutex_lock(&dvbdmx->mutex);
+        }
 
         spin_lock_irq(&dvbdmx->lock);
         f = dvbdmxfeed->filter;