1 files changed, 2 insertions, 1 deletions

diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c
index 7eddacc53b6e..329c072d17d1 100644
--- a/arch/um/drivers/slip_user.c
+++ b/arch/um/drivers/slip_user.c
@@ -17,11 +17,12 @@
 #include "os.h"
 #include "um_malloc.h"
 
-void slip_user_init(void *data, void *dev)
+static int slip_user_init(void *data, void *dev)
 {
         struct slip_data *pri = data;
 
         pri->dev = dev;
+        return 0;
 }
 
 static int set_up_tty(int fd)