Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754223Ab2HYHMX (ORCPT ); Sat, 25 Aug 2012 03:12:23 -0400 Received: from mail-yw0-f46.google.com ([209.85.213.46]:33427 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753526Ab2HYHMP (ORCPT ); Sat, 25 Aug 2012 03:12:15 -0400 MIME-Version: 1.0 In-Reply-To: <1345654398-5932-1-git-send-email-manoj.iyer@canonical.com> References: <1345654310-5895-1-git-send-email-manoj.iyer@canonical.com> <1345654398-5932-1-git-send-email-manoj.iyer@canonical.com> Date: Sat, 25 Aug 2012 15:12:14 +0800 Message-ID: Subject: Re: [PATCH 1/1] xhci: Recognize USB 3.0 devices as superspeed at powerup From: Andiry Xu To: manoj.iyer@canonical.com Cc: linux-kernel@vger.kernel.org, sarah.a.sharp@linux.intel.com, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1556 Lines: 45 On Thu, Aug 23, 2012 at 12:53 AM, wrote: > From: Manoj Iyer > > On Intel Panther Point chipset USB 3.0 devices show up as > high-speed devices on powerup, but after an s3 cycle they are > correctly recognized as SuperSpeed. At powerup switch the port > to xHCI so that USB 3.0 devices are correctly recognized. > > BugLink: http://bugs.launchpad.net/bugs/1000424 > > Signed-off-by: Manoj Iyer This one looks OK to me. Thanks, Andiry > --- > drivers/usb/host/pci-quirks.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c > index c5e9e4a..486e812 100644 > --- a/drivers/usb/host/pci-quirks.c > +++ b/drivers/usb/host/pci-quirks.c > @@ -870,9 +870,10 @@ static void __devinit quirk_usb_handoff_xhci(struct pci_dev *pdev) > /* Disable any BIOS SMIs and clear all SMI events*/ > writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); > > +hc_init: > if (usb_is_intel_switchable_xhci(pdev)) > usb_enable_xhci_ports(pdev); > -hc_init: > + > op_reg_base = base + XHCI_HC_LENGTH(readl(base)); > > /* Wait for the host controller to be ready before writing any > -- > 1.7.9.5 > -- 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/