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drm/gma500: use gem get/put page helpers 

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Rob Clark 2013-08-07 13:41:25 -04:00 committed by Dave Airlie
parent bcc5c9d50e
commit 8b9ba7a38c
1 changed files with 6 additions and 32 deletions
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38
drivers/gpu/drm/gma500/gtt.c
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@ -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;
}