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regulator: wm831x-ldo: Use platform_register/unregister_drivers() 

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: Mark Brown <broonie@kernel.org>
This commit is contained in:
Thierry Reding 2015-12-02 17:32:53 +01:00 committed by Mark Brown
parent 55e03e9c2d
commit 92a513b79f
1 changed files with 8 additions and 19 deletions
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27
drivers/regulator/wm831x-ldo.c
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@ -653,32 +653,21 @@ static struct platform_driver wm831x_alive_ldo_driver = {
}, },
}; };
static struct platform_driver * const drivers[] = {
&wm831x_gp_ldo_driver,
&wm831x_aldo_driver,
&wm831x_alive_ldo_driver,
};
static int __init wm831x_ldo_init(void) static int __init wm831x_ldo_init(void)
{ {
int ret; return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
ret = platform_driver_register(&wm831x_gp_ldo_driver);
if (ret != 0)
pr_err("Failed to register WM831x GP LDO driver: %d\n", ret);
ret = platform_driver_register(&wm831x_aldo_driver);
if (ret != 0)
pr_err("Failed to register WM831x ALDO driver: %d\n", ret);
ret = platform_driver_register(&wm831x_alive_ldo_driver);
if (ret != 0)
pr_err("Failed to register WM831x alive LDO driver: %d\n",
ret);
return 0;
} }
subsys_initcall(wm831x_ldo_init); subsys_initcall(wm831x_ldo_init);
static void __exit wm831x_ldo_exit(void) static void __exit wm831x_ldo_exit(void)
{ {
platform_driver_unregister(&wm831x_alive_ldo_driver); platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
platform_driver_unregister(&wm831x_aldo_driver);
platform_driver_unregister(&wm831x_gp_ldo_driver);
} }
module_exit(wm831x_ldo_exit); module_exit(wm831x_ldo_exit);