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drm/udl: 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 13:41:26 -04:00 committed by Dave Airlie
parent 8b9ba7a38c
commit 5dc9e1e872
1 changed files with 6 additions and 38 deletions
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44
drivers/gpu/drm/udl/udl_gem.c
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@ -117,55 +117,23 @@ int udl_gem_init_object(struct drm_gem_object *obj)
static int udl_gem_get_pages(struct udl_gem_object *obj, gfp_t gfpmask)
{
int page_count, i;
struct page *page;
struct inode *inode;
struct address_space *mapping;
struct page **pages;
if (obj->pages)
return 0;
page_count = obj->base.size / PAGE_SIZE;
BUG_ON(obj->pages != NULL);
obj->pages = drm_malloc_ab(page_count, sizeof(struct page *));
if (obj->pages == NULL)
return -ENOMEM;
pages = drm_gem_get_pages(&obj->base, gfpmask);
if (IS_ERR(pages))
return PTR_ERR(pages);
inode = file_inode(obj->base.filp);
mapping = inode->i_mapping;
gfpmask |= mapping_gfp_mask(mapping);
for (i = 0; i < page_count; i++) {
page = shmem_read_mapping_page_gfp(mapping, i, gfpmask);
if (IS_ERR(page))
goto err_pages;
obj->pages[i] = page;
}
obj->pages = pages;
return 0;
err_pages:
while (i--)
page_cache_release(obj->pages[i]);
drm_free_large(obj->pages);
obj->pages = NULL;
return PTR_ERR(page);
}
static void udl_gem_put_pages(struct udl_gem_object *obj)
{
int page_count = obj->base.size / PAGE_SIZE;
int i;
if (obj->base.import_attach) {
drm_free_large(obj->pages);
obj->pages = NULL;
return;
}
for (i = 0; i < page_count; i++)
page_cache_release(obj->pages[i]);
drm_free_large(obj->pages);
drm_gem_put_pages(&obj->base, obj->pages, false, false);
obj->pages = NULL;
}