V4L/DVB (7325): cx88-dvb: fix an OOPS for xc3028 devices, when dvb_attach fails
If dvb_attach fails, dev->dvb.frontend is NULL. This will produce an OOPS, as
reported.
Thanks to Vanessa Ezekowitz <vanessaezekowitz@gmail.com>
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 cf6b9b0..d72b817 100644
--- a/drivers/media/video/cx88/cx88-dvb.c
+++ b/drivers/media/video/cx88/cx88-dvb.c
@@ -461,6 +461,13 @@
.video_dev = dev->core,
};
+ if (!dev->dvb.frontend) {
+ printk(KERN_ERR "%s/2: dvb frontend not attached. "
+ "Can't attach xc3028\n",
+ dev->core->name);
+ return -EINVAL;
+ }
+
fe = dvb_attach(xc2028_attach, dev->dvb.frontend, &cfg);
if (!fe) {
printk(KERN_ERR "%s/2: xc3028 attach failed\n",