korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-17 17:24:17 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/ttm: add dma_resv_assert_held() calls to vmap/vunmap

Browse Source 
Let's make sure nobody is calling those functions without holding the
appropriate locks.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220715111533.467012-2-christian.koenig@amd.com
This commit is contained in:
Christian König 2022-07-15 10:34:13 +02:00
parent 4aef208561
commit d6d36cf2f8
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/ttm/ttm_bo_util.c
View File

@ -402,6 +402,8 @@ int ttm_bo_vmap(struct ttm_buffer_object *bo, struct iosys_map *map)
struct ttm_resource *mem = bo->resource;
int ret;
dma_resv_assert_held(bo->base.resv);
ret = ttm_mem_io_reserve(bo->bdev, mem);
if (ret)
return ret;
@ -460,6 +462,8 @@ void ttm_bo_vunmap(struct ttm_buffer_object *bo, struct iosys_map *map)
{
struct ttm_resource *mem = bo->resource;
dma_resv_assert_held(bo->base.resv);
if (iosys_map_is_null(map))
return;