From: Nate Watterson Date: Thu, 29 Jun 2017 22:18:15 +0000 (-0400) Subject: iommu/arm-smmu-v3: Implement shutdown method X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7aa8619a66aea52b145e04cbab4f8d6a4e5f3f3b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git iommu/arm-smmu-v3: Implement shutdown method The shutdown method disables the SMMU to avoid corrupting a new kernel started with kexec. Signed-off-by: Nate Watterson Signed-off-by: Will Deacon --- diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 568c400eeaed..e67ba6c40faf 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2852,9 +2852,15 @@ static int arm_smmu_device_remove(struct platform_device *pdev) struct arm_smmu_device *smmu = platform_get_drvdata(pdev); arm_smmu_device_disable(smmu); + return 0; } +static void arm_smmu_device_shutdown(struct platform_device *pdev) +{ + arm_smmu_device_remove(pdev); +} + static const struct of_device_id arm_smmu_of_match[] = { { .compatible = "arm,smmu-v3", }, { }, @@ -2868,6 +2874,7 @@ static struct platform_driver arm_smmu_driver = { }, .probe = arm_smmu_device_probe, .remove = arm_smmu_device_remove, + .shutdown = arm_smmu_device_shutdown, }; module_platform_driver(arm_smmu_driver); diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index b97188acc4f1..b0b126ea9d85 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -2329,6 +2329,11 @@ static int arm_smmu_device_remove(struct platform_device *pdev) return 0; } +static void arm_smmu_device_shutdown(struct platform_device *pdev) +{ + arm_smmu_device_remove(pdev); +} + static struct platform_driver arm_smmu_driver = { .driver = { .name = "arm-smmu", @@ -2336,6 +2341,7 @@ static struct platform_driver arm_smmu_driver = { }, .probe = arm_smmu_device_probe, .remove = arm_smmu_device_remove, + .shutdown = arm_smmu_device_shutdown, }; module_platform_driver(arm_smmu_driver);