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dma-mapping: always use VM_DMA_COHERENT for generic DMA remap

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Currently the generic dma remap allocator gets a vm_flags passed by
the caller that is a little confusing.  We just introduced a generic
vmalloc-level flag to identify the dma coherent allocations, so use
that everywhere and remove the now pointless argument.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2019-08-30 08:51:01 +02:00
parent fe9041c245
commit 512317401f
5 changed files with 21 additions and 28 deletions
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6
include/linux/dma-mapping.h
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@ -627,13 +627,11 @@ extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
unsigned long attrs);
void *dma_common_contiguous_remap(struct page *page, size_t size,
unsigned long vm_flags,
pgprot_t prot, const void *caller);
void *dma_common_pages_remap(struct page **pages, size_t size,
unsigned long vm_flags, pgprot_t prot,
const void *caller);
void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags);
pgprot_t prot, const void *caller);
void dma_common_free_remap(void *cpu_addr, size_t size);
bool dma_in_atomic_pool(void *start, size_t size);
void *dma_alloc_from_pool(size_t size, struct page **ret_page, gfp_t flags);