From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755173Ab2IQIzB (ORCPT ); Mon, 17 Sep 2012 04:55:01 -0400 Received: from mga01.intel.com ([192.55.52.88]:12419 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754784Ab2IQIyv (ORCPT ); Mon, 17 Sep 2012 04:54:51 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.80,434,1344236400"; d="scan'208";a="222936846" From: Huang Ying To: Bjorn Helgaas Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, "Rafael J. Wysocki" , Huang Ying Subject: [RFC 3/3] PCI/PM: Disable PME poll for PCIe devices Date: Mon, 17 Sep 2012 16:54:36 +0800 Message-Id: <1347872076-5260-4-git-send-email-ying.huang@intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1347872076-5260-1-git-send-email-ying.huang@intel.com> References: <1347872076-5260-1-git-send-email-ying.huang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PME poll is not necessary for PCIe devices, because PCIe devices use in-band PME message and IRQ on PCIe port to report PME. PME poll is useful for PCI devices. Because for PCI devices, PME is reported via a side-band PME# line and some platform logic, and the platform logic is often missing on many systems. Signed-off-by: Huang Ying --- drivers/pci/pcie/pme.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -313,6 +313,7 @@ static int pcie_pme_set_native(struct pc device_set_run_wake(&dev->dev, true); dev->pme_interrupt = true; + dev->pme_poll = false; return 0; }