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Commit e7479a19 authored by Thierry Reding's avatar Thierry Reding Committed by Joerg Roedel
Browse files

iommu/msm: 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: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 9f9499ae

drivers/iommu/msm_iommu_dev.c

+7 −18
Original line number Diff line number Diff line
@@ -359,30 +359,19 @@ static struct platform_driver msm_iommu_ctx_driver = { 
	.remove		= msm_iommu_ctx_remove,

};



static struct platform_driver * const drivers[] = {

	&msm_iommu_driver,

	&msm_iommu_ctx_driver,

};



static int __init msm_iommu_driver_init(void)

{

	int ret;

	ret = platform_driver_register(&msm_iommu_driver);

	if (ret != 0) {

		pr_err("Failed to register IOMMU driver\n");

		goto error;

	}



	ret = platform_driver_register(&msm_iommu_ctx_driver);

	if (ret != 0) {

		platform_driver_unregister(&msm_iommu_driver);

		pr_err("Failed to register IOMMU context driver\n");

		goto error;

	}



error:

	return ret;

	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));

}



static void __exit msm_iommu_driver_exit(void)

{

	platform_driver_unregister(&msm_iommu_ctx_driver);

	platform_driver_unregister(&msm_iommu_driver);

	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));

}



subsys_initcall(msm_iommu_driver_init);