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path: root/drivers/media/usb/au0828/au0828-dvb.c
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Diffstat (limited to 'drivers/media/usb/au0828/au0828-dvb.c')
-rw-r--r--drivers/media/usb/au0828/au0828-dvb.c57
1 files changed, 51 insertions, 6 deletions
diff --git a/drivers/media/usb/au0828/au0828-dvb.c b/drivers/media/usb/au0828/au0828-dvb.c
index 4ae8b1074649..d8b5d9480279 100644
--- a/drivers/media/usb/au0828/au0828-dvb.c
+++ b/drivers/media/usb/au0828/au0828-dvb.c
@@ -114,16 +114,20 @@ static void urb_completion(struct urb *purb)
int ptype = usb_pipetype(purb->pipe);
unsigned char *ptr;
- dprintk(2, "%s()\n", __func__);
+ dprintk(2, "%s: %d\n", __func__, purb->actual_length);
- if (!dev)
+ if (!dev) {
+ dprintk(2, "%s: no dev!\n", __func__);
return;
+ }
- if (dev->urb_streaming == 0)
+ if (dev->urb_streaming == 0) {
+ dprintk(2, "%s: not streaming!\n", __func__);
return;
+ }
if (ptype != PIPE_BULK) {
- printk(KERN_ERR "%s() Unsupported URB type %d\n",
+ printk(KERN_ERR "%s: Unsupported URB type %d\n",
__func__, ptype);
return;
}
@@ -252,8 +256,6 @@ static void au0828_stop_transport(struct au0828_dev *dev, int full_stop)
au0828_write(dev, 0x60b, 0x00);
}
-
-
static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
@@ -296,6 +298,8 @@ static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
dprintk(1, "%s()\n", __func__);
if (dvb) {
+ cancel_work_sync(&dev->restart_streaming);
+
mutex_lock(&dvb->lock);
dvb->stop_count++;
dprintk(1, "%s(), start_count: %d, stop_count: %d\n", __func__,
@@ -338,6 +342,41 @@ static void au0828_restart_dvb_streaming(struct work_struct *work)
mutex_unlock(&dvb->lock);
}
+static int au0828_set_frontend(struct dvb_frontend *fe)
+{
+ struct au0828_dev *dev = fe->dvb->priv;
+ struct au0828_dvb *dvb = &dev->dvb;
+ int ret, was_streaming;
+
+ mutex_lock(&dvb->lock);
+ was_streaming = dev->urb_streaming;
+ if (was_streaming) {
+ au0828_stop_transport(dev, 1);
+
+ /*
+ * We can't hold a mutex here, as the restart_streaming
+ * kthread may also hold it.
+ */
+ mutex_unlock(&dvb->lock);
+ cancel_work_sync(&dev->restart_streaming);
+ mutex_lock(&dvb->lock);
+
+ stop_urb_transfer(dev);
+ }
+ mutex_unlock(&dvb->lock);
+
+ ret = dvb->set_frontend(fe);
+
+ if (was_streaming) {
+ mutex_lock(&dvb->lock);
+ au0828_start_transport(dev);
+ start_urb_transfer(dev);
+ mutex_unlock(&dvb->lock);
+ }
+
+ return ret;
+}
+
static int dvb_register(struct au0828_dev *dev)
{
struct au0828_dvb *dvb = &dev->dvb;
@@ -382,6 +421,10 @@ static int dvb_register(struct au0828_dev *dev)
goto fail_frontend;
}
+ /* Hook dvb frontend */
+ dvb->set_frontend = dvb->frontend->ops.set_frontend;
+ dvb->frontend->ops.set_frontend = au0828_set_frontend;
+
/* register demux stuff */
dvb->demux.dmx.capabilities =
DMX_TS_FILTERING | DMX_SECTION_FILTERING |
@@ -471,6 +514,8 @@ void au0828_dvb_unregister(struct au0828_dev *dev)
if (dvb->frontend == NULL)
return;
+ cancel_work_sync(&dev->restart_streaming);
+
dvb_net_release(&dvb->net);
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);