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authorChristoph Hellwig <hch@lst.de>2017-05-22 11:50:29 +0200
committerChristoph Hellwig <hch@lst.de>2017-06-28 06:54:48 -0700
commit69f07be6221c4af8b1164a4ef229bced56846f92 (patch)
tree70308a8968da0d290457041d0ca0bcecd907f918 /arch/mips/loongson64
parent447d899b18169b2ee5e42b2fa8b32dbb40a30a24 (diff)
downloadlinux-69f07be6221c4af8b1164a4ef229bced56846f92.tar.bz2
mips/loongson64: implement ->dma_supported instead of ->set_dma_mask
Same behavior, less code duplication. Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'arch/mips/loongson64')
-rw-r--r--arch/mips/loongson64/common/dma-swiotlb.c19
1 files changed, 5 insertions, 14 deletions
diff --git a/arch/mips/loongson64/common/dma-swiotlb.c b/arch/mips/loongson64/common/dma-swiotlb.c
index 178ca17a5667..34486c138206 100644
--- a/arch/mips/loongson64/common/dma-swiotlb.c
+++ b/arch/mips/loongson64/common/dma-swiotlb.c
@@ -75,19 +75,11 @@ static void loongson_dma_sync_sg_for_device(struct device *dev,
mb();
}
-static int loongson_dma_set_mask(struct device *dev, u64 mask)
+static int loongson_dma_supported(struct device *dev, u64 mask)
{
- if (!dev->dma_mask || !dma_supported(dev, mask))
- return -EIO;
-
- if (mask > DMA_BIT_MASK(loongson_sysconf.dma_mask_bits)) {
- *dev->dma_mask = DMA_BIT_MASK(loongson_sysconf.dma_mask_bits);
- return -EIO;
- }
-
- *dev->dma_mask = mask;
-
- return 0;
+ if (mask > DMA_BIT_MASK(loongson_sysconf.dma_mask_bits))
+ return 0;
+ return swiotlb_dma_supported(dev, mask);
}
dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
@@ -126,8 +118,7 @@ static const struct dma_map_ops loongson_dma_map_ops = {
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
.sync_sg_for_device = loongson_dma_sync_sg_for_device,
.mapping_error = swiotlb_dma_mapping_error,
- .dma_supported = swiotlb_dma_supported,
- .set_dma_mask = loongson_dma_set_mask
+ .dma_supported = loongson_dma_supported,
};
void __init plat_swiotlb_setup(void)