evie/android_kernel_oneplus_msm8998
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iommu/arm-smmu: on domain destroy invlidate domain cfg

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Invalidate the domain cfg when destroying the domain
otherwise this can cause issues on subsequent attaches.
For example if the cfb cbndx is not cleared then a new
context won't get assigned to the domain.

Change-Id: If576c6c8a7da90c4ce3f1061df4b3ba0dce495e1
Signed-off-by: Liam Mark <lmark@codeaurora.org>
This commit is contained in:
Liam Mark 2016-10-20 13:50:45 -07:00
parent 773f15cdab
commit 2fc4031194
1 changed files with 4 additions and 0 deletions
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4
drivers/iommu/arm-smmu.c
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@ -1870,6 +1870,10 @@ free_irqs:
arm_smmu_free_context_idx(smmu, cfg->cbndx); arm_smmu_free_context_idx(smmu, cfg->cbndx);
smmu_domain->smmu = NULL; smmu_domain->smmu = NULL;
cfg->cbndx = INVALID_CBNDX;
cfg->irptndx = INVALID_IRPTNDX;
cfg->asid = INVALID_ASID;
cfg->vmid = INVALID_VMID;
} }
static struct iommu_domain *arm_smmu_domain_alloc(unsigned type) static struct iommu_domain *arm_smmu_domain_alloc(unsigned type)