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drm/amdgpu: WARN when freeing kernel memory during suspend

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When buffers are freed during suspend there is no guarantee that
they can be re-allocated during resume.

The PSP subsystem seems to be quite buggy regarding this, so add
a WARN_ON() to point out those bugs.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexdeucher@amd.com>
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2022-11-16 15:45:36 +01:00 committed by Alex Deucher
parent 9c3db58bf8
commit 4d2ccd96ac
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
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@ -422,6 +422,8 @@ void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
if (*bo == NULL)
return;
WARN_ON(amdgpu_ttm_adev((*bo)->tbo.bdev)->in_suspend);
if (likely(amdgpu_bo_reserve(*bo, true) == 0)) {
if (cpu_addr)
amdgpu_bo_kunmap(*bo);