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

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commit ff8cbf250b ("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.

Cc: stable <stable@vger.kernel.org> # v3.2+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reported-by: Dmitry Nezhevenko <dion@inhex.net>
[Mathias Nyman: reword commit message]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lu Baolu 2014-11-18 11:27:13 +02:00 committed by Greg Kroah-Hartman
parent c3492dbfa1
commit 9b41ebd3cf
1 changed files with 1 additions and 4 deletions
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5
drivers/usb/host/xhci-hub.c
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@ -22,7 +22,6 @@
#include <linux/slab.h>
#include <linux/device.h>
#include <asm/unaligned.h>
#include "xhci.h"
@ -1149,9 +1148,7 @@ 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;