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Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c49
1 files changed, 9 insertions, 40 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 353972c1946c..bd23971e8f1d 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -140,50 +140,19 @@ void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr,
free_pages((unsigned long)vaddr, get_order(size));
}
-void *dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
- gfp_t gfp, struct dma_attrs *attrs)
+bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp)
{
- struct dma_map_ops *ops = get_dma_ops(dev);
- void *memory;
-
- gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
-
- if (dma_alloc_from_coherent(dev, size, dma_handle, &memory))
- return memory;
-
- if (!dev)
- dev = &x86_dma_fallback_dev;
-
- if (!is_device_dma_capable(dev))
- return NULL;
-
- if (!ops->alloc)
- return NULL;
-
- memory = ops->alloc(dev, size, dma_handle,
- dma_alloc_coherent_gfp_flags(dev, gfp), attrs);
- debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
-
- return memory;
-}
-EXPORT_SYMBOL(dma_alloc_attrs);
-
-void dma_free_attrs(struct device *dev, size_t size,
- void *vaddr, dma_addr_t bus,
- struct dma_attrs *attrs)
-{
- struct dma_map_ops *ops = get_dma_ops(dev);
-
- WARN_ON(irqs_disabled()); /* for portability */
+ *gfp = dma_alloc_coherent_gfp_flags(*dev, *gfp);
+ *gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
- if (dma_release_from_coherent(dev, get_order(size), vaddr))
- return;
+ if (!*dev)
+ *dev = &x86_dma_fallback_dev;
+ if (!is_device_dma_capable(*dev))
+ return false;
+ return true;
- debug_dma_free_coherent(dev, size, vaddr, bus);
- if (ops->free)
- ops->free(dev, size, vaddr, bus, attrs);
}
-EXPORT_SYMBOL(dma_free_attrs);
+EXPORT_SYMBOL(arch_dma_alloc_attrs);
/*
* See <Documentation/x86/x86_64/boot-options.txt> for the iommu kernel