V4L/DVB (7537): cx88/saa7134: Fix: avoid OOPS on module unload
If frontend is not attached, both cx88-dvb and saa7134-dvb don't
register DVB. However, dvb unregister were inconditionally called.
Due to that, an OOPS is generated.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c
index 8fc929e..e83d986 100644
--- a/drivers/media/video/cx88/cx88-dvb.c
+++ b/drivers/media/video/cx88/cx88-dvb.c
@@ -951,7 +951,8 @@
struct cx8802_dev *dev = drv->core->dvbdev;
/* dvb */
- videobuf_dvb_unregister(&dev->dvb);
+ if (dev->dvb.frontend)
+ videobuf_dvb_unregister(&dev->dvb);
vp3054_i2c_remove(dev);
diff --git a/drivers/media/video/saa7134/saa7134-dvb.c b/drivers/media/video/saa7134/saa7134-dvb.c
index 5c84f45..e5c3569 100644
--- a/drivers/media/video/saa7134/saa7134-dvb.c
+++ b/drivers/media/video/saa7134/saa7134-dvb.c
@@ -1302,7 +1302,8 @@
}
}
}
- videobuf_dvb_unregister(&dev->dvb);
+ if (dev->dvb.frontend)
+ videobuf_dvb_unregister(&dev->dvb);
return 0;
}
