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@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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index a3b569f173c32dbdc000d15a7b03273313c47d42..a8bbeed66581b345b2cfbd7241020a4857968452 100644 (file)
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -21,7 +21,6 @@
  */
 
 #include <linux/gfp.h>
-#include <linux/device.h>
 #include <asm/unaligned.h>
 
 #include "xhci.h"
@@ -996,9 +995,7 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
                        t2 |= PORT_LINK_STROBE | XDEV_U3;
                        set_bit(port_index, &bus_state->bus_suspended);
                }
-               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;