1 files changed, 19 insertions, 1 deletions

diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 2c6571c05f35..c75d9270c752 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -120,9 +120,26 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
         del_timer_sync(&ehci->watchdog);
         del_timer_sync(&ehci->iaa_watchdog);
 
-        port = HCS_N_PORTS (ehci->hcs_params);
         spin_lock_irq (&ehci->lock);
 
+        /* Once the controller is stopped, port resumes that are already
+         * in progress won't complete.  Hence if remote wakeup is enabled
+         * for the root hub and any ports are in the middle of a resume or
+         * remote wakeup, we must fail the suspend.
+         */
+        if (hcd->self.root_hub->do_remote_wakeup) {
+                port = HCS_N_PORTS(ehci->hcs_params);
+                while (port--) {
+                        if (ehci->reset_done[port] != 0) {
+                                spin_unlock_irq(&ehci->lock);
+                                ehci_dbg(ehci, "suspend failed because "
+                                                "port %d is resuming\n",
+                                                port + 1);
+                                return -EBUSY;
+                        }
+                }
+        }
+
         /* stop schedules, clean any completed work */
         if (HC_IS_RUNNING(hcd->state)) {
                 ehci_quiesce (ehci);
@@ -138,6 +155,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
          */
         ehci->bus_suspended = 0;
         ehci->owned_ports = 0;
+        port = HCS_N_PORTS(ehci->hcs_params);
         while (port--) {
                 u32 __iomem     *reg = &ehci->regs->port_status [port];
                 u32             t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;