drm/amdgpu: don't evict vram on APUs for suspend to ram (v4)

Vram is system memory, so no need to evict.

v2: use PM_EVENT messages
v3: use correct dev
v4: use driver flags

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 4b29b82..0720504 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1028,13 +1028,10 @@ int amdgpu_bo_evict_vram(struct amdgpu_device *adev)
 {
        struct ttm_resource_manager *man;
 
-       /* late 2.6.33 fix IGP hibernate - we need pm ops to do this correct */
-#ifndef CONFIG_HIBERNATION
-       if (adev->flags & AMD_IS_APU) {
-               /* Useless to evict on IGP chips */
+       if (adev->in_s3 && (adev->flags & AMD_IS_APU)) {
+               /* No need to evict vram on APUs for suspend to ram */
                return 0;
        }
-#endif
 
        man = ttm_manager_type(&adev->mman.bdev, TTM_PL_VRAM);
        return ttm_resource_manager_evict_all(&adev->mman.bdev, man);