commit e688f144305c678fb65138d9e6b6ce436e59778b
author Muhammad Falak R Wani <falakreyaz@gmail.com> Sat May 21 18:52:57 2016 +0530
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Wed Aug 31 15:13:56 2016 +0200
tree f0cc14503ae14f18d8eebba48a97c3f0e599f0c9
parent 03aca7b260ea2aadf92596d2f57160e4aee8ffb0

drivers: dma-coherent: 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>

drivers/base/dma-coherent.c

diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c
index bdf28f7..db122a0 100644
--- a/drivers/base/dma-coherent.c
+++ b/drivers/base/dma-coherent.c
@@ -261,7 +261,7 @@
 		   (mem->virt_base + (mem->size << PAGE_SHIFT))) {
 		unsigned long off = vma->vm_pgoff;
 		int start = (vaddr - mem->virt_base) >> PAGE_SHIFT;
-		int user_count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+		int user_count = vma_pages(vma);
 		int count = size >> PAGE_SHIFT;
 
 		*ret = -ENXIO;