 << 0, pdev)) != NULL) {   vga_count++;    has_atpx |= (amdgpu_atpx_pci_probe_handle(pdev) == true);    parent_pdev = pci_upstream_bridge(pdev);   d0_supported |= parent_pdev && parent_pdev->bridge_d0;   amdgpu_atpx_get_quirks(pdev);  }   while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_