Fix debugfs_create_file's error checking method for arch/sh/mm/
debugfs_create_file() 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>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index cef7276..8424167 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -394,6 +394,8 @@
dentry = debugfs_create_file("pmb", S_IFREG | S_IRUGO,
sh_debugfs_root, NULL, &pmb_debugfs_fops);
+ if (!dentry)
+ return -ENOMEM;
if (IS_ERR(dentry))
return PTR_ERR(dentry);