From: Zhaolei Subject: [PATCH] Fix debugfs_create_dir's error checking method for sound/soc/ Date: Fri, 17 Oct 2008 21:04:55 +0800 Message-ID: <48F88D77.2080106@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-kernel-owner@vger.kernel.org To: "linux-kernel@vger.kernel.org" Cc: lrg@slimlogic.co.uk, broonie@opensource.wolfsonmicro.com, alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org 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 --- 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