Commit 81b0d0e4 authored by Christian König's avatar Christian König
Browse files

drm/ttm: fix missing NULL check in ttm_device_swapout 



Resources about to be destructed are not tied to BOs any more.

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Fixes: 6a9b0289 ("drm/ttm: move the LRU into resource handling v4")
Link: https://patchwork.freedesktop.org/patch/msgid/20220603104604.456991-1-christian.koenig@amd.com
parent 4527d47b

drivers/gpu/drm/ttm/ttm_device.c

+5 −1
Original line number Diff line number Diff line
@@ -156,8 +156,12 @@ int ttm_device_swapout(struct ttm_device *bdev, struct ttm_operation_ctx *ctx, 


		ttm_resource_manager_for_each_res(man, &cursor, res) {

			struct ttm_buffer_object *bo = res->bo;

			uint32_t num_pages = PFN_UP(bo->base.size);

			uint32_t num_pages;



			if (!bo)

				continue;



			num_pages = PFN_UP(bo->base.size);

			ret = ttm_bo_swapout(bo, ctx, gfp_flags);

			/* ttm_bo_swapout has dropped the lru_lock */

			if (!ret)