diff --git a/[refs] b/[refs]
index be85a55ae892..3fe6aba10559 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: dc8c85871c9728c5fddca6854a191fd41eb9438c
+refs/heads/master: 5c3e8964ce87477a12e3e9edc3742156a3929a74
diff --git a/trunk/fs/sysfs/dir.c b/trunk/fs/sysfs/dir.c
index da4bb66a610c..5d95aa8e23c6 100644
--- a/trunk/fs/sysfs/dir.c
+++ b/trunk/fs/sysfs/dir.c
@@ -428,8 +428,12 @@ void sysfs_addrm_start(struct sysfs_addrm_cxt *acxt,
  */
 int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
 {
-	if (sysfs_find_dirent(acxt->parent_sd, sd->s_name))
+	if (sysfs_find_dirent(acxt->parent_sd, sd->s_name)) {
+		printk(KERN_WARNING "sysfs: duplicate filename '%s' "
+		       "can not be created\n", sd->s_name);
+		WARN_ON(1);
 		return -EEXIST;
+	}
 
 	sd->s_parent = sysfs_get(acxt->parent_sd);