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authorMuhammad Falak R Wani <falakreyaz@gmail.com>2016-05-21 18:52:22 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-08-31 15:13:56 +0200
commit95da00e35acf92bb5d39f6f08267de0c1a5c8885 (patch)
tree32d7a3671623c2dda55f17febfcf1fdb2630955f /drivers/base
parente688f144305c678fb65138d9e6b6ce436e59778b (diff)
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@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/dma-mapping.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index 261420ddfe66..2e318ffa019e 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;