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gpio: mpc5200: Use platform_register/unregister_drivers()

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These new helpers simplify implementing multi-driver modules and
properly handle failure to register one driver by unregistering all
previously registered drivers.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Thierry Reding 2015-12-02 17:19:55 +01:00 committed by Linus Walleij
parent 12b61c9d7e
commit 20d7090ffd
1 changed files with 7 additions and 10 deletions
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17
drivers/gpio/gpio-mpc5200.c
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@ -360,15 +360,14 @@ static struct platform_driver mpc52xx_simple_gpiochip_driver = {
.remove = mpc52xx_gpiochip_remove,
};
static struct platform_driver * const drivers[] = {
&mpc52xx_wkup_gpiochip_driver,
&mpc52xx_simple_gpiochip_driver,
};
static int __init mpc52xx_gpio_init(void)
{
if (platform_driver_register(&mpc52xx_wkup_gpiochip_driver))
printk(KERN_ERR "Unable to register wakeup GPIO driver\n");
if (platform_driver_register(&mpc52xx_simple_gpiochip_driver))
printk(KERN_ERR "Unable to register simple GPIO driver\n");
return 0;
return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
}
/* Make sure we get initialised before anyone else tries to use us */
@ -376,9 +375,7 @@ subsys_initcall(mpc52xx_gpio_init);
static void __exit mpc52xx_gpio_exit(void)
{
platform_driver_unregister(&mpc52xx_wkup_gpiochip_driver);
platform_driver_unregister(&mpc52xx_simple_gpiochip_driver);
platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
module_exit(mpc52xx_gpio_exit);