Commit 16c50dcf authored Feb 28, 2014 by Laurent Pinchart Committed by Will Deacon Apr 15, 2014

iommu/arm-smmu: Return 0 on unmap failure



The IOMMU core expects the unmap operation to return the number of bytes
that have been unmapped or 0 on failure, a negative return value being
treated like a number of bytes.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

parent c9eaa447

drivers/iommu/arm-smmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1499,7 +1499,7 @@ static size_t arm_smmu_unmap(struct iommu_domain *domain, unsigned long iova,

		ret = arm_smmu_handle_mapping(smmu_domain, iova, 0, size, 0);
		arm_smmu_tlb_inv_context(&smmu_domain->root_cfg);
		return ret ? ret : size;
		return ret ? 0 : size;
		}

		static phys_addr_t arm_smmu_iova_to_phys(struct iommu_domain *domain,