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drm/ttm: fix missing NULL check in the new page pool 

The pool parameter can be NULL if we free through the shrinker.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Martin Peres <martin.peres@mupuf.org>
Acked-by: Martin Peres <martin.peres@mupuf.org>
Reported-by: Andy Lavr <andy.lavr@gmail.com>
Tested-by: Andy Lavr <andy.lavr@gmail.com>
Link: https://patchwork.freedesktop.org/patch/399365/
This commit is contained in:
Christian König 2020-11-06 15:06:49 +01:00
parent a7319c8f50
commit e3e043992c
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/ttm/ttm_pool.c
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@ -135,7 +135,7 @@ static void ttm_pool_free_page(struct ttm_pool *pool, enum ttm_caching caching,
set_pages_wb(p, 1 << order); set_pages_wb(p, 1 << order);
#endif #endif
if (!pool->use_dma_alloc) { if (!pool || !pool->use_dma_alloc) {
__free_pages(p, order); __free_pages(p, order);
return; return;
} }