USB: EHCI: Fix resume signalling on remote wakeup

Set the ehci->resuming flag for the port we receive a remote
wakeup on so that resume signalling can be completed.

Without this, the root hub timer will not fire again to check
if the resume was completed and there will be a never-ending wait on
on the port.

This effect is only observed if the HUB IRQ IN does not come after we
have initiated the port resume.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 2b702772d04d3353cc570c340f04c9701fa11210..6dce37555c4f6303b5efa657af88096db2b2140e 100644 (file)
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -874,6 +874,7 @@ static int ehci_hub_control (
                                ehci->reset_done[wIndex] = jiffies
                                                + msecs_to_jiffies(20);
                                usb_hcd_start_port_resume(&hcd->self, wIndex);
+                               set_bit(wIndex, &ehci->resuming_ports);
                                /* check the port again */
                                mod_timer(&ehci_to_hcd(ehci)->rh_timer,
                                                ehci->reset_done[wIndex]);