diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_tt.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_tt.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index 9e4d43d68e91..e90d3ed6283f 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -50,19 +50,25 @@ /** * Allocates storage for pointers to the pages that back the ttm. */ -static void ttm_tt_alloc_page_directory(struct ttm_tt *ttm) +static int ttm_tt_alloc_page_directory(struct ttm_tt *ttm) { ttm->pages = kvmalloc_array(ttm->num_pages, sizeof(void*), GFP_KERNEL | __GFP_ZERO); + if (!ttm->pages) + return -ENOMEM; + return 0; } -static void ttm_dma_tt_alloc_page_directory(struct ttm_dma_tt *ttm) +static int ttm_dma_tt_alloc_page_directory(struct ttm_dma_tt *ttm) { ttm->ttm.pages = kvmalloc_array(ttm->ttm.num_pages, sizeof(*ttm->ttm.pages) + sizeof(*ttm->dma_address), GFP_KERNEL | __GFP_ZERO); + if (!ttm->ttm.pages) + return -ENOMEM; ttm->dma_address = (void *) (ttm->ttm.pages + ttm->ttm.num_pages); + return 0; } #ifdef CONFIG_X86 @@ -197,8 +203,7 @@ int ttm_tt_init(struct ttm_tt *ttm, struct ttm_bo_device *bdev, ttm->state = tt_unpopulated; ttm->swap_storage = NULL; - ttm_tt_alloc_page_directory(ttm); - if (!ttm->pages) { + if (ttm_tt_alloc_page_directory(ttm)) { ttm_tt_destroy(ttm); pr_err("Failed allocating page table\n"); return -ENOMEM; @@ -230,8 +235,7 @@ int ttm_dma_tt_init(struct ttm_dma_tt *ttm_dma, struct ttm_bo_device *bdev, ttm->swap_storage = NULL; INIT_LIST_HEAD(&ttm_dma->pages_list); - ttm_dma_tt_alloc_page_directory(ttm_dma); - if (!ttm->pages) { + if (ttm_dma_tt_alloc_page_directory(ttm_dma)) { ttm_tt_destroy(ttm); pr_err("Failed allocating page table\n"); return -ENOMEM; |