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iommu/ipmmu-vmsa: Invalidate TLB after unmapping

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The TLB must be invalidated after unmapping memory to remove stale TLB
entries. this was supposed to be performed already, but a bug in the
driver prevented the TLB invalidate function from being called. Fix it.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2014-07-24 15:34:54 +02:00
parent 22463cab3f
commit 9eca0a5875
1 changed files with 1 additions and 3 deletions
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4
drivers/iommu/ipmmu-vmsa.c
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@ -785,7 +785,6 @@ static int ipmmu_clear_mapping(struct ipmmu_vmsa_domain *domain,
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
int ret = 0;
if (!pgd)
return -EINVAL;
@ -847,8 +846,7 @@ static int ipmmu_clear_mapping(struct ipmmu_vmsa_domain *domain,
done:
spin_unlock_irqrestore(&domain->lock, flags);
if (ret)
ipmmu_tlb_invalidate(domain);
ipmmu_tlb_invalidate(domain);
return 0;
}