Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753135AbaDYQJ3 (ORCPT ); Fri, 25 Apr 2014 12:09:29 -0400 Received: from mga02.intel.com ([134.134.136.20]:58325 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753058AbaDYQJX (ORCPT ); Fri, 25 Apr 2014 12:09:23 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,927,1389772800"; d="scan'208";a="519794212" From: Mathias Nyman To: Cc: , , , Denis Turischev , Denis Turischev , stable@vger.kernel.org, Mathias Nyman Subject: [PATCH v2 2/4] xhci: Switch Intel Lynx Point ports to EHCI on shutdown. Date: Fri, 25 Apr 2014 19:20:14 +0300 Message-Id: <1398442816-32538-3-git-send-email-mathias.nyman@linux.intel.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1398442816-32538-1-git-send-email-mathias.nyman@linux.intel.com> References: <1398442816-32538-1-git-send-email-mathias.nyman@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Denis Turischev The same issue like with Panther Point chipsets. If the USB ports are switched to xHCI on shutdown, the xHCI host will send a spurious interrupt, which will wake the system. Some BIOS have work around for this, but not all. One example is Compulab's mini-desktop, the Intense-PC2. The bug can be avoided if the USB ports are switched back to EHCI on shutdown. This patch should be backported to stable kernels as old as 3.12, that contain the commit 638298dc66ea36623dbc2757a24fc2c4ab41b016 "xhci: Fix spurious wakeups after S5 on Haswell" Signed-off-by: Denis Turischev Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman --- drivers/usb/host/xhci-pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 47390e3..1715063 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -134,6 +134,8 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) */ if (pdev->subsystem_vendor == PCI_VENDOR_ID_HP) xhci->quirks |= XHCI_SPURIOUS_WAKEUP; + + xhci->quirks |= XHCI_SPURIOUS_REBOOT; } if (pdev->vendor == PCI_VENDOR_ID_ETRON && pdev->device == PCI_DEVICE_ID_ASROCK_P67) { -- 1.8.3.2 -- 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/