linux-kernel - [PATCH] Fix debugfs_create_dir's error checking method for arch/sh/kernel/

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Date:	Fri, 17 Oct 2008 19:25:03 +0800
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	lethal@...ux-sh.org
CC:	linux-sh@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] Fix debugfs_create_dir's error checking method for arch/sh/kernel/

Hi,

debugfs_create_dir() returns NULL if an error occurs, returns -ENODEV
when debugfs is not enabled in the kernel.

Signed-off-by: Zhao Lei <zhaolei@...fujitsu.com>
---
 arch/sh/kernel/setup.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index de83205..c41c4dc 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -530,6 +530,8 @@ struct dentry *sh_debugfs_root;
 static int __init sh_debugfs_init(void)
 {
 	sh_debugfs_root = debugfs_create_dir("sh", NULL);
+	if (!sh_debugfs_root)
+		return -ENOMEM;
 	if (IS_ERR(sh_debugfs_root))
 		return PTR_ERR(sh_debugfs_root);
 
-- 
1.5.5.3


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