iommu: dma-mapping-fast: Fix error code for dma_map_sg



Zero indicates an error. Values less than zero trigger a bug, which is
undesirable.

Change-Id: I36296eeaf32a463503f7fe0a476ad2a35211c8e5
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>

parent 0df84ac3

drivers/iommu/dma-mapping-fast.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -434,7 +434,8 @@ static int fast_smmu_map_sg(struct device dev, struct scatterlist sg,
		int nents, enum dma_data_direction dir,
		unsigned long attrs)
		{
		return -EINVAL;
		/* 0 indicates error */
		return 0;
		}

		static void fast_smmu_unmap_sg(struct device *dev,