Commit d6d36cf2 authored by Christian König's avatar Christian König
Browse files

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



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

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarDmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220715111533.467012-2-christian.koenig@amd.com
parent 4aef2085

drivers/gpu/drm/ttm/ttm_bo_util.c

+4 −0
Original line number Diff line number Diff line
@@ -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;