From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755255AbaFLBS5 (ORCPT ); Wed, 11 Jun 2014 21:18:57 -0400 Received: from mga09.intel.com ([134.134.136.24]:7783 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754597AbaFLBS4 (ORCPT ); Wed, 11 Jun 2014 21:18:56 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,461,1400050800"; d="scan'208";a="527143781" Message-ID: <5398FFDA.5050601@linux.intel.com> Date: Thu, 12 Jun 2014 09:18:18 +0800 From: baolu User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Greg Kroah-Hartman CC: Mathias Nyman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] xhci: clear root port wake on bits if controller isn't wake-up capable References: <1402439120-78151-1-git-send-email-baolu.lu@linux.intel.com> <20140611152604.GA27630@kroah.com> In-Reply-To: <20140611152604.GA27630@kroah.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/11/2014 11:26 PM, Greg Kroah-Hartman wrote: > On Wed, Jun 11, 2014 at 06:25:20AM +0800, Lu Baolu wrote: >> When the xHCI PCI host is suspended, if do_wakeup is false in xhci_pci_suspend, >> xhci_bus_suspend needs to clear all root port wake on bits. Otherwise some Intel >> platform may get a spurious wakeup, even if PCI PME# is disabled. >> >> http://marc.info/?l=linux-usb&m=138194006009255&w=2 >> >> Signed-off-by: Lu Baolu >> --- >> drivers/usb/host/xhci-hub.c | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) > Should this also be a stable kernel patch? If so, how far back? Yes. This patch should be back-ported to kernels as old as 2.6.37, that contains the commit 9777e3ce907d4cb5a513902a87ecd03b52499569 "USB: xHCI: bus power management implementation". Thanks, -baolu > > thanks, > > greg k-h > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > >