[PATCH 7/9] drm/gma500: use gem get/put page helpers

[Rob Clark]

Signed-off-by: Rob Clark <robdclark at gmail.com>
---
 drivers/gpu/drm/gma500/gtt.c | 38 ++++++--------------------------------
 1 file changed, 6 insertions(+), 32 deletions(-)

diff --git a/drivers/gpu/drm/gma500/gtt.c b/drivers/gpu/drm/gma500/gtt.c
index 1f82183..92babac 100644
--- a/drivers/gpu/drm/gma500/gtt.c
+++ b/drivers/gpu/drm/gma500/gtt.c
@@ -196,37 +196,17 @@ void psb_gtt_roll(struct drm_device *dev, struct 
gtt_range *r, int roll)
  */
 static int psb_gtt_attach_pages(struct gtt_range *gt)
 {
-       struct inode *inode;
-       struct address_space *mapping;
-       int i;
-       struct page *p;
-       int pages = gt->gem.size / PAGE_SIZE;
+       struct page **pages;

        WARN_ON(gt->pages);

-       /* This is the shared memory object that backs the GEM resource */
-       inode = file_inode(gt->gem.filp);
-       mapping = inode->i_mapping;
+       pages = drm_gem_get_pages(&gt->gem, 0);
+       if (IS_ERR(pages))
+               return PTR_ERR(pages);

-       gt->pages = kmalloc(pages * sizeof(struct page *), GFP_KERNEL);
-       if (gt->pages == NULL)
-               return -ENOMEM;
-       gt->npage = pages;
+       gt->pages = pages;

-       for (i = 0; i < pages; i++) {
-               p = shmem_read_mapping_page(mapping, i);
-               if (IS_ERR(p))
-                       goto err;
-               gt->pages[i] = p;
-       }
        return 0;
-
-err:
-       while (i--)
-               page_cache_release(gt->pages[i]);
-       kfree(gt->pages);
-       gt->pages = NULL;
-       return PTR_ERR(p);
 }

 /**
@@ -240,13 +220,7 @@ err:
  */
 static void psb_gtt_detach_pages(struct gtt_range *gt)
 {
-       int i;
-       for (i = 0; i < gt->npage; i++) {
-               /* FIXME: do we need to force dirty */
-               set_page_dirty(gt->pages[i]);
-               page_cache_release(gt->pages[i]);
-       }
-       kfree(gt->pages);
+       drm_gem_put_pages(&gt->gem, gt->pages, true, false);
        gt->pages = NULL;
 }

-- 
1.8.3.1