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| author | Christoph Hellwig <hch@lst.de> | 2017-05-22 12:50:29 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2017-06-28 16:54:48 +0300 |
| commit | 69f07be6221c4af8b1164a4ef229bced56846f92 (patch) | |
| tree | 70308a8968da0d290457041d0ca0bcecd907f918 /arch/mips/loongson64 | |
| parent | 447d899b18169b2ee5e42b2fa8b32dbb40a30a24 (diff) | |
| download | linux-69f07be6221c4af8b1164a4ef229bced56846f92.tar.xz | |
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.c | 19 |
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) |