[PATCH 1/1] drivers:gpu: Use vma_pages()

[Allen Pais]

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

Signed-off-by: Allen Pais <allen.l...@gmail.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
index 1869c8b..d4c429c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c
@@ -220,7 +220,7 @@ static int rockchip_drm_gem_object_mmap_iommu(struct 
drm_gem_object *obj,
 {
        struct rockchip_gem_object *rk_obj = to_rockchip_obj(obj);
        unsigned int i, count = obj->size >> PAGE_SHIFT;
-       unsigned long user_count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+       unsigned long user_count =  vma_pages(vma);
        unsigned long uaddr = vma->vm_start;
        unsigned long offset = vma->vm_pgoff;
        unsigned long end = user_count + offset;
-- 
2.7.4