This is a note to let you know that I've just added the patch titled
xhci: Switch Intel Lynx Point ports to EHCI on shutdown.
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xhci-switch-intel-lynx-point-ports-to-ehci-on-shutdown.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c09ec25d3684cad74d851c0f028a495999591279 Mon Sep 17 00:00:00 2001
From: Denis Turischev <denis.turischev@xxxxxxxxxxxxxx>
Date: Fri, 25 Apr 2014 19:20:14 +0300
Subject: xhci: Switch Intel Lynx Point ports to EHCI on shutdown.
From: Denis Turischev <denis.turischev@xxxxxxxxxxxxxx>
commit c09ec25d3684cad74d851c0f028a495999591279 upstream.
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 <denis@xxxxxxxxxxxxxx>
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-pci.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -134,6 +134,8 @@ static void xhci_pci_quirks(struct devic
*/
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) {
Patches currently in stable-queue which might be from denis.turischev@xxxxxxxxxxxxxx are
queue-3.14/xhci-switch-intel-lynx-point-ports-to-ehci-on-shutdown.patch
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