switch debugfs to umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 65894f0..42986d7 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1073,7 +1073,7 @@
 static void dasd_profile_init(struct dasd_profile *profile,
 			      struct dentry *base_dentry)
 {
-	mode_t mode;
+	umode_t mode;
 	struct dentry *pde;
 
 	if (!base_dentry)
@@ -1112,7 +1112,7 @@
 
 static void dasd_statistics_createroot(void)
 {
-	mode_t mode;
+	umode_t mode;
 	struct dentry *pde;
 
 	dasd_debugfs_root_entry = NULL;