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drm/ttm: fix missing NULL check in ttm_device_swapout

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

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Fixes: 6a9b02899402 ("drm/ttm: move the LRU into resource handling v4")
Link: https://patchwork.freedesktop.org/patch/msgid/20220603104604.456991-1-christian.koenig@amd.com
This commit is contained in:
Christian König 2022-06-03 12:43:50 +02:00
parent 4527d47bb6
commit 81b0d0e4f8
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/ttm/ttm_device.c
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@ -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)