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arm64: dma-mapping: Cocci spatch "vma_pages" 

Use vma_pages function on vma object instead of explicit computation.
Found by coccinelle spatch "api/vma_pages.cocci"

Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Thomas Meyer 2017-09-21 00:29:36 +02:00 committed by Will Deacon
parent c2f0b54f10
commit b4f4a27556
1 changed files with 1 additions and 2 deletions
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3
arch/arm64/mm/dma-mapping.c
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@ -303,8 +303,7 @@ static int __swiotlb_mmap_pfn(struct vm_area_struct *vma,
unsigned long pfn, size_t size)
{
int ret = -ENXIO;
unsigned long nr_vma_pages = (vma->vm_end - vma->vm_start) >>
PAGE_SHIFT;
unsigned long nr_vma_pages = vma_pages(vma);
unsigned long nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
unsigned long off = vma->vm_pgoff;