linux-kernel - [PATCH 1/1] drivers:gpu: Use vma

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Message-Id: <1505990303-27763-1-git-send-email-allen.lkml@gmail.com>
Date:   Thu, 21 Sep 2017 16:08:23 +0530
From:   Allen Pais <allen.lkml@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     mark.yao@...k-chips.com, linux-rockchip@...ts.infradead.org,
        Allen Pais <allen.lkml@...il.com>
Subject: [PATCH 1/1] drivers:gpu: Use vma_pages()

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

Signed-off-by: Allen Pais <allen.lkml@...il.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