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drm/ttm: return -EBUSY if waiting for busy BO fails

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Returning -EAGAIN prevents ttm_bo_mem_space from trying alternate
placements and can lead to live-locks in amdgpu_cs, retrying
indefinitely and never succeeding.

Fixes: d367bd2a5e ("drm/ttm: fix busy memory to fail other user v10")
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling 2019-06-26 02:32:43 -04:00 • committed by Alex Deucher
commit f631959653
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/ttm/ttm_bo.c
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@ -827,7 +827,7 @@ static int ttm_mem_evict_wait_busy(struct ttm_buffer_object *busy_bo,
if (!r)
reservation_object_unlock(busy_bo->resv);
return r == -EDEADLK ? -EAGAIN : r;
return r == -EDEADLK ? -EBUSY : r;
}
static int ttm_mem_evict_first(struct ttm_bo_device *bdev,