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V4L/DVB: IR/lirc_dev: check for valid irctl in unregister path
author
Jarod Wilson
<jarod@redhat.com>
Fri, 17 Sep 2010 21:12:31 +0000
(18:12 -0300)
committer
Mauro Carvalho Chehab
<mchehab@redhat.com>
Thu, 21 Oct 2010 03:06:08 +0000
(
01:06
-0200)
Prompted by Red Hat bugzilla #633023
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/IR/lirc_dev.c
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diff --git
a/drivers/media/IR/lirc_dev.c
b/drivers/media/IR/lirc_dev.c
index
899891b
..
0572053
100644
(file)
--- a/
drivers/media/IR/lirc_dev.c
+++ b/
drivers/media/IR/lirc_dev.c
@@
-366,6
+366,11
@@
int lirc_unregister_driver(int minor)
}
ir = irctls[minor];
+ if (!ir) {
+ printk(KERN_ERR "lirc_dev: lirc_unregister_driver: "
+ "failed to get irctl struct for minor %d!", minor);
+ return -ENOENT;
+ }
mutex_lock(&lirc_dev_lock);