From 72fd97bf4e75e37552640614a0ea98897fc1dd77 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 21 Nov 2018 18:57:36 +0100 Subject: arm: remove the mapping_error dma_map_ops method Arm already returns (~(dma_addr_t)0x0) on mapping failures, so we can switch over to returning DMA_MAPPING_ERROR and let the core dma-mapping code handle the rest. Signed-off-by: Christoph Hellwig Acked-by: Russell King Acked-by: Linus Torvalds --- arch/arm/common/dmabounce.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) (limited to 'arch/arm/common/dmabounce.c') diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index 9a92de63426f..5ba4622030ca 100644 --- a/arch/arm/common/dmabounce.c +++ b/arch/arm/common/dmabounce.c @@ -257,7 +257,7 @@ static inline dma_addr_t map_single(struct device *dev, void *ptr, size_t size, if (buf == NULL) { dev_err(dev, "%s: unable to map unsafe buffer %p!\n", __func__, ptr); - return ARM_MAPPING_ERROR; + return DMA_MAPPING_ERROR; } dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n", @@ -327,7 +327,7 @@ static dma_addr_t dmabounce_map_page(struct device *dev, struct page *page, ret = needs_bounce(dev, dma_addr, size); if (ret < 0) - return ARM_MAPPING_ERROR; + return DMA_MAPPING_ERROR; if (ret == 0) { arm_dma_ops.sync_single_for_device(dev, dma_addr, size, dir); @@ -336,7 +336,7 @@ static dma_addr_t dmabounce_map_page(struct device *dev, struct page *page, if (PageHighMem(page)) { dev_err(dev, "DMA buffer bouncing of HIGHMEM pages is not supported\n"); - return ARM_MAPPING_ERROR; + return DMA_MAPPING_ERROR; } return map_single(dev, page_address(page) + offset, size, dir, attrs); @@ -453,11 +453,6 @@ static int dmabounce_dma_supported(struct device *dev, u64 dma_mask) return arm_dma_ops.dma_supported(dev, dma_mask); } -static int dmabounce_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return arm_dma_ops.mapping_error(dev, dma_addr); -} - static const struct dma_map_ops dmabounce_ops = { .alloc = arm_dma_alloc, .free = arm_dma_free, @@ -472,7 +467,6 @@ static const struct dma_map_ops dmabounce_ops = { .sync_sg_for_cpu = arm_dma_sync_sg_for_cpu, .sync_sg_for_device = arm_dma_sync_sg_for_device, .dma_supported = dmabounce_dma_supported, - .mapping_error = dmabounce_mapping_error, }; static int dmabounce_init_pool(struct dmabounce_pool *pool, struct device *dev, -- cgit v1.2.3