[PATCH] avoid kernel oops when rmmod saa7134

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The following is a patch to avoid a kernel oops when running rmmod
saa7134 on kernel 2.6.27.1. The change is as suggested by mchehab on
irc.freenode.org

Signed-off-by: Hussam Al-Tayeb <ht990332@xxxxxxxxx>

--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -701,7 +701,7 @@
 {
 	struct rc_dev *rdev = input_get_drvdata(idev);
 
-	rdev->close(rdev);
+	 if (rdev) rdev->close(rdev);
 }
 
 /* class for /sys/class/rc */

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