Input: serio - make write method mandatory

[linux-2.6-microblaze.git] / drivers / input / serio / serio.c

diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index 29f4910..8d229a1 100644 (file)
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -694,6 +694,11 @@ EXPORT_SYMBOL(serio_reconnect);
  */
 void __serio_register_port(struct serio *serio, struct module *owner)
 {
+       if (!serio->write) {
+               pr_err("%s: refusing to register %s without write method\n",
+                      __func__, serio->name);
+               return;
+       }
        serio_init_port(serio);
        serio_queue_event(serio, owner, SERIO_REGISTER_PORT);
 }