diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 22 | ||||
| -rw-r--r-- | arch/arm/mm/mm.h | 3 |
2 files changed, 7 insertions, 18 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index eb903beef2ff..aec31f9b918b 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -343,19 +343,13 @@ static void * __dma_alloc_remap(struct page *page, size_t size, gfp_t gfp, pgprot_t prot, const void *caller) { - /* - * DMA allocation can be mapped to user space, so lets - * set VM_USERMAP flags too. - */ - return dma_common_contiguous_remap(page, size, - VM_ARM_DMA_CONSISTENT | VM_USERMAP, + return dma_common_contiguous_remap(page, size, VM_DMA_COHERENT, prot, caller); } static void __dma_free_remap(void *cpu_addr, size_t size) { - dma_common_free_remap(cpu_addr, size, - VM_ARM_DMA_CONSISTENT | VM_USERMAP); + dma_common_free_remap(cpu_addr, size, VM_DMA_COHERENT); } #define DEFAULT_DMA_COHERENT_POOL_SIZE SZ_256K @@ -1371,8 +1365,8 @@ static void * __iommu_alloc_remap(struct page **pages, size_t size, gfp_t gfp, pgprot_t prot, const void *caller) { - return dma_common_pages_remap(pages, size, - VM_ARM_DMA_CONSISTENT | VM_USERMAP, prot, caller); + return dma_common_pages_remap(pages, size, VM_DMA_COHERENT, prot, + caller); } /* @@ -1456,7 +1450,7 @@ static struct page **__iommu_get_pages(void *cpu_addr, unsigned long attrs) return cpu_addr; area = find_vm_area(cpu_addr); - if (area && (area->flags & VM_ARM_DMA_CONSISTENT)) + if (area && (area->flags & VM_DMA_COHERENT)) return area->pages; return NULL; } @@ -1614,10 +1608,8 @@ void __arm_iommu_free_attrs(struct device *dev, size_t size, void *cpu_addr, return; } - if ((attrs & DMA_ATTR_NO_KERNEL_MAPPING) == 0) { - dma_common_free_remap(cpu_addr, size, - VM_ARM_DMA_CONSISTENT | VM_USERMAP); - } + if ((attrs & DMA_ATTR_NO_KERNEL_MAPPING) == 0) + dma_common_free_remap(cpu_addr, size, VM_DMA_COHERENT); __iommu_remove_mapping(dev, handle, size); __iommu_free_buffer(dev, pages, size, attrs); diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h index 941356d95a67..88c121ac14b3 100644 --- a/arch/arm/mm/mm.h +++ b/arch/arm/mm/mm.h @@ -70,9 +70,6 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page #define VM_ARM_MTYPE(mt) ((mt) << 20) #define VM_ARM_MTYPE_MASK (0x1f << 20) -/* consistent regions used by dma_alloc_attrs() */ -#define VM_ARM_DMA_CONSISTENT 0x20000000 - struct static_vm { struct vm_struct vm; |