TTY: serial: convert drivers/tty/serial/* to use module_platform_driver()

This patch converts the drivers in drivers/tty/serial/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jamie Iles <jamie@jamieiles.com>
Cc: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/tty/serial/8250_dw.c

@@ -177,17 +177,7 @@ static struct platform_driver dw8250_platform_driver = {
 	.remove			= __devexit_p(dw8250_remove),
 };
 
-static int __init dw8250_init(void)
-{
-	return platform_driver_register(&dw8250_platform_driver);
-}
-module_init(dw8250_init);
-
-static void __exit dw8250_exit(void)
-{
-	platform_driver_unregister(&dw8250_platform_driver);
-}
-module_exit(dw8250_exit);
+module_platform_driver(dw8250_platform_driver);
 
 MODULE_AUTHOR("Jamie Iles");
 MODULE_LICENSE("GPL");

drivers/tty/serial/sc26xx.c

@@ -736,19 +736,7 @@ static struct platform_driver sc26xx_driver = {
 	},
 };
 
-static int __init sc26xx_init(void)
-{
-	return platform_driver_register(&sc26xx_driver);
-}
-
-static void __exit sc26xx_exit(void)
-{
-	platform_driver_unregister(&sc26xx_driver);
-}
-
-module_init(sc26xx_init);
-module_exit(sc26xx_exit);
-
+module_platform_driver(sc26xx_driver);
 
 MODULE_AUTHOR("Thomas Bogendörfer");
 MODULE_DESCRIPTION("SC681/SC2692 serial driver");

drivers/tty/serial/timbuart.c

@@ -513,20 +513,7 @@ static struct platform_driver timbuart_platform_driver = {
 	.remove		= __devexit_p(timbuart_remove),
 };
 
-/*--------------------------------------------------------------------------*/
-
-static int __init timbuart_init(void)
-{
-	return platform_driver_register(&timbuart_platform_driver);
-}
-
-static void __exit timbuart_exit(void)
-{
-	platform_driver_unregister(&timbuart_platform_driver);
-}
-
-module_init(timbuart_init);
-module_exit(timbuart_exit);
+module_platform_driver(timbuart_platform_driver);
 
 MODULE_DESCRIPTION("Timberdale UART driver");
 MODULE_LICENSE("GPL v2");

drivers/tty/serial/vr41xx_siu.c

@@ -961,18 +961,7 @@ static struct platform_driver siu_device_driver = {
 	},
 };
 
-static int __init vr41xx_siu_init(void)
-{
-	return platform_driver_register(&siu_device_driver);
-}
-
-static void __exit vr41xx_siu_exit(void)
-{
-	platform_driver_unregister(&siu_device_driver);
-}
-
-module_init(vr41xx_siu_init);
-module_exit(vr41xx_siu_exit);
+module_platform_driver(siu_device_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:SIU");