linux-kernel - [PATCH] Fix debugfs_create_dir's error checking method for arm/plat-omap

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Message-ID: <48F85976.4070609@cn.fujitsu.com>
Date:	Fri, 17 Oct 2008 17:23:02 +0800
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	Russell King <rmk+kernel@....linux.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] Fix debugfs_create_dir's error checking method for arm/plat-omap

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/arm/plat-omap/clock.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index bf6a10c..0767985 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -483,6 +483,8 @@ static int __init clk_debugfs_init(void)
 	int err;
 
 	d = debugfs_create_dir("clock", NULL);
+	if (!d)
+		return -ENOMEM;
 	if (IS_ERR(d))
 		return PTR_ERR(d);
 	clk_debugfs_root = d;
-- 
1.5.5.3


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