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ia64/sn: remove the mapping_error dma_map_ops method 

Return DMA_MAPPING_ERROR instead of 0 on a dma mapping failure and let
the core dma-mapping code handle the rest.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Christoph Hellwig 2018-11-21 19:18:10 +01:00
parent 07256950cd
commit 608b9761a0
1 changed files with 1 additions and 7 deletions
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8
arch/ia64/sn/pci/pci_dma.c
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@ -196,7 +196,7 @@ static dma_addr_t sn_dma_map_page(struct device *dev, struct page *page,
if (!dma_addr) {
printk(KERN_ERR "%s: out of ATEs\n", __func__);
return 0;
return DMA_MAPPING_ERROR;
}
return dma_addr;
}
@ -314,11 +314,6 @@ static int sn_dma_map_sg(struct device *dev, struct scatterlist *sgl,
return nhwentries;
}
static int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
static u64 sn_dma_get_required_mask(struct device *dev)
{
return DMA_BIT_MASK(64);
@ -441,7 +436,6 @@ static struct dma_map_ops sn_dma_ops = {
.unmap_page = sn_dma_unmap_page,
.map_sg = sn_dma_map_sg,
.unmap_sg = sn_dma_unmap_sg,
.mapping_error = sn_dma_mapping_error,
.dma_supported = sn_dma_supported,
.get_required_mask = sn_dma_get_required_mask,
};