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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 <nwatters@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Nate Watterson 2017-06-29 18:18:15 -04:00 committed by Will Deacon
parent aae4e7a8bc
commit 7aa8619a66
2 changed files with 13 additions and 0 deletions
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7
drivers/iommu/arm-smmu-v3.c
View File

@ -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);

6
drivers/iommu/arm-smmu.c
View File

@ -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);