Input: handle serio_register_driver() errors

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index 73c6946..498e64a 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -1389,8 +1389,7 @@
 
 static int __init atkbd_init(void)
 {
-	serio_register_driver(&atkbd_drv);
-	return 0;
+	return serio_register_driver(&atkbd_drv);
 }
 
 static void __exit atkbd_exit(void)
diff --git a/drivers/input/keyboard/hil_kbd.c b/drivers/input/keyboard/hil_kbd.c
index e774dd3..7cc9728 100644
--- a/drivers/input/keyboard/hil_kbd.c
+++ b/drivers/input/keyboard/hil_kbd.c
@@ -381,8 +381,7 @@
 
 static int __init hil_kbd_init(void)
 {
-	serio_register_driver(&hil_kbd_serio_drv);
-        return 0;
+	return serio_register_driver(&hil_kbd_serio_drv);
 }
                 
 static void __exit hil_kbd_exit(void)
diff --git a/drivers/input/keyboard/lkkbd.c b/drivers/input/keyboard/lkkbd.c
index 0067c1f..1789785 100644
--- a/drivers/input/keyboard/lkkbd.c
+++ b/drivers/input/keyboard/lkkbd.c
@@ -758,8 +758,7 @@
 static int __init
 lkkbd_init (void)
 {
-	serio_register_driver(&lkkbd_drv);
-	return 0;
+	return serio_register_driver(&lkkbd_drv);
 }
 
 static void __exit
diff --git a/drivers/input/keyboard/newtonkbd.c b/drivers/input/keyboard/newtonkbd.c
index 33e8139..aa29b50 100644
--- a/drivers/input/keyboard/newtonkbd.c
+++ b/drivers/input/keyboard/newtonkbd.c
@@ -169,8 +169,7 @@
 
 static int __init nkbd_init(void)
 {
-	serio_register_driver(&nkbd_drv);
-	return 0;
+	return serio_register_driver(&nkbd_drv);
 }
 
 static void __exit nkbd_exit(void)
diff --git a/drivers/input/keyboard/stowaway.c b/drivers/input/keyboard/stowaway.c
index e60937d..f7b5c5b 100644
--- a/drivers/input/keyboard/stowaway.c
+++ b/drivers/input/keyboard/stowaway.c
@@ -173,8 +173,7 @@
 
 static int __init skbd_init(void)
 {
-	serio_register_driver(&skbd_drv);
-	return 0;
+	return serio_register_driver(&skbd_drv);
 }
 
 static void __exit skbd_exit(void)
diff --git a/drivers/input/keyboard/sunkbd.c b/drivers/input/keyboard/sunkbd.c
index d1b62f7..d6ab6d4 100644
--- a/drivers/input/keyboard/sunkbd.c
+++ b/drivers/input/keyboard/sunkbd.c
@@ -352,8 +352,7 @@
 
 static int __init sunkbd_init(void)
 {
-	serio_register_driver(&sunkbd_drv);
-	return 0;
+	return serio_register_driver(&sunkbd_drv);
 }
 
 static void __exit sunkbd_exit(void)
diff --git a/drivers/input/keyboard/xtkbd.c b/drivers/input/keyboard/xtkbd.c
index b53f716..a820934 100644
--- a/drivers/input/keyboard/xtkbd.c
+++ b/drivers/input/keyboard/xtkbd.c
@@ -174,8 +174,7 @@
 
 static int __init xtkbd_init(void)
 {
-	serio_register_driver(&xtkbd_drv);
-	return 0;
+	return serio_register_driver(&xtkbd_drv);
 }
 
 static void __exit xtkbd_exit(void)