diff options
Diffstat (limited to 'kernel/dma/remap.c')
| -rw-r--r-- | kernel/dma/remap.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/kernel/dma/remap.c b/kernel/dma/remap.c index 838123f79639..f6b90521a7e4 100644 --- a/kernel/dma/remap.c +++ b/kernel/dma/remap.c @@ -12,12 +12,11 @@ #include <linux/vmalloc.h> static struct vm_struct *__dma_common_pages_remap(struct page **pages, - size_t size, unsigned long vm_flags, pgprot_t prot, - const void *caller) + size_t size, pgprot_t prot, const void *caller) { struct vm_struct *area; - area = get_vm_area_caller(size, vm_flags, caller); + area = get_vm_area_caller(size, VM_DMA_COHERENT, caller); if (!area) return NULL; @@ -34,12 +33,11 @@ static struct vm_struct *__dma_common_pages_remap(struct page **pages, * Cannot be used in non-sleeping contexts */ void *dma_common_pages_remap(struct page **pages, size_t size, - unsigned long vm_flags, pgprot_t prot, - const void *caller) + pgprot_t prot, const void *caller) { struct vm_struct *area; - area = __dma_common_pages_remap(pages, size, vm_flags, prot, caller); + area = __dma_common_pages_remap(pages, size, prot, caller); if (!area) return NULL; @@ -53,7 +51,6 @@ void *dma_common_pages_remap(struct page **pages, size_t size, * Cannot be used in non-sleeping contexts */ void *dma_common_contiguous_remap(struct page *page, size_t size, - unsigned long vm_flags, pgprot_t prot, const void *caller) { int i; @@ -67,7 +64,7 @@ void *dma_common_contiguous_remap(struct page *page, size_t size, for (i = 0; i < (size >> PAGE_SHIFT); i++) pages[i] = nth_page(page, i); - area = __dma_common_pages_remap(pages, size, vm_flags, prot, caller); + area = __dma_common_pages_remap(pages, size, prot, caller); kfree(pages); @@ -79,11 +76,11 @@ void *dma_common_contiguous_remap(struct page *page, size_t size, /* * Unmaps a range previously mapped by dma_common_*_remap */ -void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags) +void dma_common_free_remap(void *cpu_addr, size_t size) { struct vm_struct *area = find_vm_area(cpu_addr); - if (!area || (area->flags & vm_flags) != vm_flags) { + if (!area || area->flags != VM_DMA_COHERENT) { WARN(1, "trying to free invalid coherent area: %p\n", cpu_addr); return; } @@ -136,7 +133,7 @@ static int __init dma_atomic_pool_init(void) if (!atomic_pool) goto free_page; - addr = dma_common_contiguous_remap(page, atomic_pool_size, VM_USERMAP, + addr = dma_common_contiguous_remap(page, atomic_pool_size, pgprot_dmacoherent(PAGE_KERNEL), __builtin_return_address(0)); if (!addr) @@ -153,7 +150,7 @@ static int __init dma_atomic_pool_init(void) return 0; remove_mapping: - dma_common_free_remap(addr, atomic_pool_size, VM_USERMAP); + dma_common_free_remap(addr, atomic_pool_size); destroy_genpool: gen_pool_destroy(atomic_pool); atomic_pool = NULL; @@ -228,7 +225,7 @@ void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, arch_dma_prep_coherent(page, size); /* create a coherent mapping */ - ret = dma_common_contiguous_remap(page, size, VM_USERMAP, + ret = dma_common_contiguous_remap(page, size, dma_pgprot(dev, PAGE_KERNEL, attrs), __builtin_return_address(0)); if (!ret) { |