diff --git a/drivers/char/diag/diag_memorydevice.c b/drivers/char/diag/diag_memorydevice.c
index da5a477375da..c552f263d7e5 100644
--- a/drivers/char/diag/diag_memorydevice.c
+++ b/drivers/char/diag/diag_memorydevice.c
@@ -356,8 +356,8 @@ int diag_md_init()
 			ch->tbl[j].buf = NULL;
 			ch->tbl[j].len = 0;
 			ch->tbl[j].ctx = 0;
-			spin_lock_init(&(ch->lock));
 		}
+		spin_lock_init(&(ch->lock));
 	}
 
 	return 0;