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Commit 95da00e3 authored by Muhammad Falak R Wani's avatar Muhammad Falak R Wani Committed by Greg Kroah-Hartman
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dma-mapping: use vma_pages(). 



Replace explicit computation of vma page count by a call to
vma_pages()

Signed-off-by: default avatarMuhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e688f144

drivers/base/dma-mapping.c

+1 −1
Original line number Diff line number Diff line
@@ -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;