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regulator: wm831x-dcdc: 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: Mark Brown <broonie@kernel.org>
This commit is contained in:
Thierry Reding 2015-12-02 17:32:52 +01:00 committed by Mark Brown
parent 8005c49d9a
commit 55e03e9c2d
1 changed files with 9 additions and 22 deletions
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31
drivers/regulator/wm831x-dcdc.c
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@ -884,35 +884,22 @@ static struct platform_driver wm831x_epe_driver = {
},
};
static struct platform_driver * const drivers[] = {
&wm831x_buckv_driver,
&wm831x_buckp_driver,
&wm831x_boostp_driver,
&wm831x_epe_driver,
};
static int __init wm831x_dcdc_init(void)
{
int ret;
ret = platform_driver_register(&wm831x_buckv_driver);
if (ret != 0)
pr_err("Failed to register WM831x BUCKV driver: %d\n", ret);
ret = platform_driver_register(&wm831x_buckp_driver);
if (ret != 0)
pr_err("Failed to register WM831x BUCKP driver: %d\n", ret);
ret = platform_driver_register(&wm831x_boostp_driver);
if (ret != 0)
pr_err("Failed to register WM831x BOOST driver: %d\n", ret);
ret = platform_driver_register(&wm831x_epe_driver);
if (ret != 0)
pr_err("Failed to register WM831x EPE driver: %d\n", ret);
return 0;
return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
}
subsys_initcall(wm831x_dcdc_init);
static void __exit wm831x_dcdc_exit(void)
{
platform_driver_unregister(&wm831x_epe_driver);
platform_driver_unregister(&wm831x_boostp_driver);
platform_driver_unregister(&wm831x_buckp_driver);
platform_driver_unregister(&wm831x_buckv_driver);
platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
module_exit(wm831x_dcdc_exit);