ALSA: Fix debugfs_create_dir's error checking method for sound/soc/

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@cn.fujitsu.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index efbd0b37810aba581672c1208bf82a99a2d1554a..7351db9606e48f3d11870671a4b9e71c37081e50 100644 (file)
--- 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