Commit 9eca0a58 authored Jul 24, 2014 by Laurent Pinchart

iommu/ipmmu-vmsa: Invalidate TLB after unmapping

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>

parent 22463cab

drivers/iommu/ipmmu-vmsa.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -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;
		@@ -847,7 +846,6 @@ static int ipmmu_clear_mapping(struct ipmmu_vmsa_domain *domain,
		done:
		spin_unlock_irqrestore(&domain->lock, flags);

		if (ret)
		ipmmu_tlb_invalidate(domain);

		return 0;