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gpu: host1x: 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>
This commit is contained in:
Thierry Reding 2015-12-02 17:24:20 +01:00
parent 663a233eef
commit 28fae81f93
1 changed files with 8 additions and 14 deletions
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22
drivers/gpu/host1x/dev.c
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@ -212,6 +212,11 @@ static struct platform_driver tegra_host1x_driver = {
.remove = host1x_remove,
};
static struct platform_driver * const drivers[] = {
&tegra_host1x_driver,
&tegra_mipi_driver,
};
static int __init tegra_host1x_init(void)
{
int err;
@ -220,28 +225,17 @@ static int __init tegra_host1x_init(void)
if (err < 0)
return err;
err = platform_driver_register(&tegra_host1x_driver);
err = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
if (err < 0)
goto unregister_bus;
err = platform_driver_register(&tegra_mipi_driver);
if (err < 0)
goto unregister_host1x;
return 0;
unregister_host1x:
platform_driver_unregister(&tegra_host1x_driver);
unregister_bus:
bus_unregister(&host1x_bus_type);
return err;
}
module_init(tegra_host1x_init);
static void __exit tegra_host1x_exit(void)
{
platform_driver_unregister(&tegra_mipi_driver);
platform_driver_unregister(&tegra_host1x_driver);
platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
bus_unregister(&host1x_bus_type);
}
module_exit(tegra_host1x_exit);