Commit 4d2ccd96 authored by Christian König's avatar Christian König Committed by Alex Deucher
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drm/amdgpu: WARN when freeing kernel memory during suspend 



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: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarAlex Deucher <alexdeucher@amd.com>
Tested-by: default avatarGuilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9c3db58b

drivers/gpu/drm/amd/amdgpu/amdgpu_object.c

+2 −0
Original line number Diff line number Diff line
@@ -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);