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authorZhaolei <zhaolei@cn.fujitsu.com>2008-10-17 19:25:09 +0800
committerPaul Mundt <lethal@linux-sh.org>2008-10-20 10:40:21 +0900
commit25627c7fd71269e2658b6872eef65719ee80b9aa (patch)
tree9f5b6f11354ef176348a42aa969c93b3f5794f8f /arch/sh
parent9986b311efdc9727a5a48f03c3dac3d536fbaa74 (diff)
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>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/mm/cache-debugfs.c6
-rw-r--r--arch/sh/mm/pmb.c2
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c
index 0e189ccd4a7..5ba067b2659 100644
--- a/arch/sh/mm/cache-debugfs.c
+++ b/arch/sh/mm/cache-debugfs.c
@@ -130,12 +130,18 @@ static int __init cache_debugfs_init(void)
dcache_dentry = debugfs_create_file("dcache", S_IRUSR, sh_debugfs_root,
(unsigned int *)CACHE_TYPE_DCACHE,
&cache_debugfs_fops);
+ if (!dcache_dentry)
+ return -ENOMEM;
if (IS_ERR(dcache_dentry))
return PTR_ERR(dcache_dentry);
icache_dentry = debugfs_create_file("icache", S_IRUSR, sh_debugfs_root,
(unsigned int *)CACHE_TYPE_ICACHE,
&cache_debugfs_fops);
+ if (!icache_dentry) {
+ debugfs_remove(dcache_dentry);
+ return -ENOMEM;
+ }
if (IS_ERR(icache_dentry)) {
debugfs_remove(dcache_dentry);
return PTR_ERR(icache_dentry);
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index cef727669c8..84241676265 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -394,6 +394,8 @@ static int __init pmb_debugfs_init(void)
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);