linux-kernel - [PATCH] Fix debugfs_create_dir's error checking method for sound/soc/

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Date:	Fri, 17 Oct 2008 21:04:55 +0800
From:	Zhaolei <zhaolei@...fujitsu.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	lrg@...mlogic.co.uk, broonie@...nsource.wolfsonmicro.com,
	alsa-devel@...a-project.org
Subject: [PATCH] Fix debugfs_create_dir's error checking method for sound/soc/

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>
---
 sound/soc/soc-dapm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index efbd0b3..7351db9 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -831,7 +831,7 @@ int snd_soc_dapm_sys_add(struct device *dev)
 		return ret;
 
 	asoc_debugfs = debugfs_create_dir("asoc", NULL);
-	if (!IS_ERR(asoc_debugfs))
+	if (!IS_ERR(asoc_debugfs) && asoc_debugfs)
 		debugfs_create_u32("dapm_pop_time", 0744, asoc_debugfs,
 				   &pop_time);
 	else
-- 
1.5.5.3


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