diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index abb51bd77ca776c31fd3663fe92bfebd00a94bfd..ae31744dac28a8df6550abef270d98403e5a9103 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -719,7 +719,7 @@ bool amdgpu_need_post(struct amdgpu_device *adev)
 	/* then check MEM_SIZE, in case the crtcs are off */
 	reg = amdgpu_asic_get_config_memsize(adev);
 
-	if (reg)
+	if ((reg != 0) && (reg != 0xffffffff))
 		return false;
 
 	return true;