diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-05-22 11:38:27 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2017-06-28 06:54:46 -0700 |
| commit | 5860acc1a905b05c14e9ed9e22c20aad1a72554a (patch) | |
| tree | c7de41ef603b7f179b06241ca055966e65dcc995 /arch/x86/kernel | |
| parent | 418a7a7e4f05f36d6e4ab5b8548ea71f0b602140 (diff) | |
| download | linux-5860acc1a905b05c14e9ed9e22c20aad1a72554a.tar.gz linux-5860acc1a905b05c14e9ed9e22c20aad1a72554a.tar.bz2 linux-5860acc1a905b05c14e9ed9e22c20aad1a72554a.zip | |
x86: remove arch specific dma_supported implementation
And instead wire it up as method for all the dma_map_ops instances.
Note that this also means the arch specific check will be fully instead
of partially applied in the AMD iommu driver.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/amd_gart_64.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-calgary_64.c | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-dma.c | 8 | ||||
| -rw-r--r-- | arch/x86/kernel/pci-nommu.c | 1 |
4 files changed, 4 insertions, 7 deletions
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 815dd63f49d0..cc0e8bc0ea3f 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -704,6 +704,7 @@ static const struct dma_map_ops gart_dma_ops = { .alloc = gart_alloc_coherent, .free = gart_free_coherent, .mapping_error = gart_mapping_error, + .dma_supported = x86_dma_supported, }; static void gart_iommu_shutdown(void) diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c index e75b490f2b0b..5286a4a92cf7 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -493,6 +493,7 @@ static const struct dma_map_ops calgary_dma_ops = { .map_page = calgary_map_page, .unmap_page = calgary_unmap_page, .mapping_error = calgary_mapping_error, + .dma_supported = x86_dma_supported, }; static inline void __iomem * busno_to_bbar(unsigned char num) diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 3a216ec869cd..5e16d3f29594 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -213,10 +213,8 @@ static __init int iommu_setup(char *p) } early_param("iommu", iommu_setup); -int dma_supported(struct device *dev, u64 mask) +int x86_dma_supported(struct device *dev, u64 mask) { - const struct dma_map_ops *ops = get_dma_ops(dev); - #ifdef CONFIG_PCI if (mask > 0xffffffff && forbid_dac > 0) { dev_info(dev, "PCI: Disallowing DAC for device\n"); @@ -224,9 +222,6 @@ int dma_supported(struct device *dev, u64 mask) } #endif - if (ops->dma_supported) - return ops->dma_supported(dev, mask); - /* Copied from i386. Doesn't make much sense, because it will only work for pci_alloc_coherent. The caller just has to use GFP_DMA in this case. */ @@ -252,7 +247,6 @@ int dma_supported(struct device *dev, u64 mask) return 1; } -EXPORT_SYMBOL(dma_supported); static int __init pci_iommu_init(void) { diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c index 085fe6ce4049..a6d404087fe3 100644 --- a/arch/x86/kernel/pci-nommu.c +++ b/arch/x86/kernel/pci-nommu.c @@ -104,4 +104,5 @@ const struct dma_map_ops nommu_dma_ops = { .sync_sg_for_device = nommu_sync_sg_for_device, .is_phys = 1, .mapping_error = nommu_mapping_error, + .dma_supported = x86_dma_supported, }; |