[media] saa7164: saa7164-buffer.c line 274 bugfix

Mark buffers free when the dvb dma engine stops.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/media/video/saa7164/saa7164-dvb.c b/drivers/media/video/saa7164/saa7164-dvb.c
index 2d21c01dea29..b305a01b3bde 100644
--- a/drivers/media/video/saa7164/saa7164-dvb.c
+++ b/drivers/media/video/saa7164/saa7164-dvb.c
@@ -143,6 +143,8 @@ static int saa7164_dvb_pause_port(struct saa7164_port *port)
 static int saa7164_dvb_stop_streaming(struct saa7164_port *port)
 {
         struct saa7164_dev *dev = port->dev;
+        struct saa7164_buffer *buf;
+        struct list_head *p, *q;
         int ret;
 
         dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);
@@ -151,6 +153,14 @@ static int saa7164_dvb_stop_streaming(struct saa7164_port *port)
         ret = saa7164_dvb_acquire_port(port);
         ret = saa7164_dvb_stop_port(port);
 
+        /* Mark the hardware buffers as free */
+        mutex_lock(&port->dmaqueue_lock);
+        list_for_each_safe(p, q, &port->dmaqueue.list) {
+                buf = list_entry(p, struct saa7164_buffer, list);
+                buf->flags = SAA7164_BUFFER_FREE;
+        }
+        mutex_unlock(&port->dmaqueue_lock);
+
         return ret;
 }