From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753778Ab2GPQqS (ORCPT ); Mon, 16 Jul 2012 12:46:18 -0400 Received: from softlayer.compulab.co.il ([50.23.254.55]:58509 "EHLO compulab.co.il" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753441Ab2GPQqO (ORCPT ); Mon, 16 Jul 2012 12:46:14 -0400 Message-ID: <5004454E.9030903@compulab.co.il> Date: Mon, 16 Jul 2012 19:46:06 +0300 From: Denis Turischev User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1 MIME-Version: 1.0 To: Sarah Sharp CC: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Greg Kroah-Hartman Subject: [PATCH] xhci: EHCI/xHCI ports switching on Intense-PC. Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - softlayer.compulab.co.il X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - compulab.co.il Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Intense-PC is Compulab's mini-desktop with Intel Panther Point chipset. Unconditional ports switching provided by function usb_enable_xhci_ports() leads to surprising results, after shutdown system powered-on again after a few seconds. On Windows power related problems were not observed. The patch avoids ports switching for Intense-PC. Signed-off-by: Denis Turischev --- drivers/usb/host/pci-quirks.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index df0828c..6f72593 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -759,6 +759,13 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev) { u32 ports_available; + const char *brd_name; + brd_name = dmi_get_system_info(DMI_BOARD_NAME); + + /* quirk for Compulab's Intense-PC board */ + if (brd_name && strstr(brd_name, "Intense-PC")) + return; + /* Don't switchover the ports if the user hasn't compiled the xHCI * driver. Otherwise they will see "dead" USB ports that don't power * the devices. -- 1.7.9.5