* [PATCH] ARM: dma-mapping: Use vma_pages()
@ 2018-03-24 14:55 Fabio Estevam
0 siblings, 0 replies; only message in thread
From: Fabio Estevam @ 2018-03-24 14:55 UTC (permalink / raw)
To: linux-arm-kernel
From: Fabio Estevam <fabio.estevam@nxp.com>
Use vma_pages() function instead of open coding it.
Generated by scripts/coccinelle/api/vma_pages.cocci.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.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 8c398fe..c25cca6 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -845,7 +845,7 @@ 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;
--
2.7.4
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