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Date: Sat, 21 May 2016 18:52:22 +0530 From: Muhammad Falak R Wani <falakreyaz@...il.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: linux-kernel@...r.kernel.org Subject: [PATCH] dma-mapping: use vma_pages(). Replace explicit computation of vma page count by a call to vma_pages() Signed-off-by: Muhammad Falak R Wani <falakreyaz@...il.com> --- drivers/base/dma-mapping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index d799662..1d82f7e 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -247,7 +247,7 @@ int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, { int ret = -ENXIO; #if defined(CONFIG_MMU) && !defined(CONFIG_ARCH_NO_COHERENT_DMA_MMAP) - unsigned long user_count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; + unsigned long user_count = vma_pages(vma); unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT; unsigned long pfn = page_to_pfn(virt_to_page(cpu_addr)); unsigned long off = vma->vm_pgoff; -- 1.9.1
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