ARM: dma-mapping: Use vma_pages()

PATCH New Fabio Estevam 1 participant 1 message Mar 24, 2018 Arm (32-bit)

lore

Share & tools

lore

Fabio Estevam

author

2018-03-24 14:55 UTC #0 lore raw

PATCH 1/1 ARM: dma-mapping: Use vma_pages()

From: Fabio Estevam <[email protected]>

Use vma_pages() function instead of open coding it.

Generated by scripts/coccinelle/api/vma_pages.cocci.

Signed-off-by Fabio Estevam <[email protected]>

---
 arch/arm/mm/dma-mapping.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

arch/arm/mm/dma-mapping.c +1 -1

index 8c398fe..c25cca6 100644
@@ -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;

Signature · 1 line

2.7.4