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>
git-mirror · Apr 24, 2008 · 9950c1b · 9950c1b
1 parent fb7b37c
commit 9950c1b
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c
@@ -951,7 +951,8 @@ static int cx8802_dvb_remove(struct cx8802_driver *drv)
 	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
@@ -1302,7 +1302,8 @@ static int dvb_fini(struct saa7134_dev *dev)
 			}
 		}
 	}
-	videobuf_dvb_unregister(&dev->dvb);
+	if (dev->dvb.frontend)
+		videobuf_dvb_unregister(&dev->dvb);
 	return 0;
 }