Messages in this thread Patch in this message |  | | From | Colin King <> | Subject | [PATCH] arm: dma-mapping: use vma_pages helper function | Date | Sun, 19 Nov 2017 21:17:19 +0000 |
| |
From: Colin Ian King <colin.king@canonical.com>
Use the vma_pages helper function on vma instead of an explicit calculation.
Found by coccinelle spatch "api/vma_pages.cocci"
Signed-off-by: Colin Ian King <colin.king@canonical.com> --- arch/arm/mm/dma-mapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index ada8eb206a90..ec0f277d1d4d 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -831,7 +831,7 @@ static int __arm_dma_mmap(struct device *dev, struct vm_area_struct *vma, unsigned long attrs) { int ret; - 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 pfn = dma_to_pfn(dev, dma_addr); unsigned long off = vma->vm_pgoff; -- 2.14.1
|  |