From 7a23ad44047b1084a032bc0d127fe08af024593a Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Thu, 14 Jun 2007 03:45:13 +0900
Subject: sysfs: make sysfs_put() ignore NULL sd
Make sysfs_put() ignore NULL sd instead of oopsing.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
fs/sysfs/sysfs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
(limited to 'fs')
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 687d959f60..f4fdbbffd5 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -111,7 +111,7 @@ static inline struct sysfs_dirent * sysfs_get(struct sysfs_dirent * sd)
static inline void sysfs_put(struct sysfs_dirent * sd)
{
- if (atomic_dec_and_test(&sd->s_count))
+ if (sd && atomic_dec_and_test(&sd->s_count))
release_sysfs_dirent(sd);
}
--
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