[3.16.y-ckt stable] Patch "Revert "xhci: clear root port wake on bits if controller isn't wake-up capable"" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    Revert "xhci: clear root port wake on bits if controller isn't wake-up capable"

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt3.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 63a462e0e1e7d1d05066efcd716aea319452bd31 Mon Sep 17 00:00:00 2001
From: Lu Baolu <baolu.lu at linux.intel.com>
Date: Tue, 18 Nov 2014 11:27:13 +0200
Subject: Revert "xhci: clear root port wake on bits if controller isn't
 wake-up capable"

commit 9b41ebd3cf0f68d8cad779d3eeba336f78262e43 upstream.

commit ff8cbf250b44 ("xhci: clear root port wake on bits if controller isn't")
can cause device detection error if runtime PM is enabled, and S3 wake
is disabled. Revert it.
https://bugzilla.kernel.org/show_bug.cgi?id=85701

This commit got into stable and should be reverted from there as well.

Signed-off-by: Lu Baolu <baolu.lu at linux.intel.com>
Reported-by: Dmitry Nezhevenko <dion at inhex.net>
[Mathias Nyman: reword commit message]
Signed-off-by: Mathias Nyman <mathias.nyman at linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/usb/host/xhci-hub.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 69aece31143a..64f0ddac957f 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -22,7 +22,6 @@


 #include <linux/slab.h>
-#include <linux/device.h>
 #include <asm/unaligned.h>

 #include "xhci.h"
@@ -1142,9 +1141,7 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
 		 * including the USB 3.0 roothub, but only if CONFIG_PM_RUNTIME
 		 * is enabled, so also enable remote wake here.
 		 */
-		if (hcd->self.root_hub->do_remote_wakeup
-				&& device_may_wakeup(hcd->self.controller)) {
-
+		if (hcd->self.root_hub->do_remote_wakeup) {
 			if (t1 & PORT_CONNECT) {
 				t2 |= PORT_WKOC_E | PORT_WKDISC_E;
 				t2 &= ~PORT_WKCONN_E;