| Message ID | 20220715111533.467012-2-christian.koenig@amd.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] drm/ttm: fix locking in vmap/vunmap TTM GEM helpers | expand |
diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index 1530982338e9..497ee1fdbad7 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -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;
Let's make sure nobody is calling those functions without holding the appropriate locks. Signed-off-by: Christian König <christian.koenig@amd.com> --- drivers/gpu/drm/ttm/ttm_bo_util.c | 4 ++++ 1 file changed, 4 insertions(+)