1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index b29134de983b..d399b8b0f000 100644
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -524,8 +524,8 @@ static void serio_init_port(struct serio *serio)
         spin_lock_init(&serio->lock);
         mutex_init(&serio->drv_mutex);
         device_initialize(&serio->dev);
-        dev_set_name(&serio->dev, "serio%ld",
-                        (long)atomic_inc_return(&serio_no) - 1);
+        dev_set_name(&serio->dev, "serio%lu",
+                     (unsigned long)atomic_inc_return(&serio_no) - 1);
         serio->dev.bus = &serio_bus;
         serio->dev.release = serio_release_port;
         serio->dev.groups = serio_device_attr_groups;