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 <[email protected]>
---
arch/sh/kernel/setup.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index de83205..c41c4dc 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -530,6 +530,8 @@ struct dentry *sh_debugfs_root;
static int __init sh_debugfs_init(void)
{
sh_debugfs_root = debugfs_create_dir("sh", NULL);
+ if (!sh_debugfs_root)
+ return -ENOMEM;
if (IS_ERR(sh_debugfs_root))
return PTR_ERR(sh_debugfs_root);
--
1.5.5.3