USB: EHCI: fix remote-wakeup support for ARC/TDI core

This patch (as1147) fixes the remote-wakeup support for EHCI
controllers using the ARC/TDI "embedded-TT" core.  These controllers
turn off the RESUME bit by themselves when a port resume is complete;
hence we need to keep separate track of which ports are suspended or
in the process of resuming.

The patch also makes a couple of small improvements in ehci_irq(),
replacing reads of the command register with the value already stored
in a local variable.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Thomas Reitmayr <treitmayr@devbase.at>
CC: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index a6fd550b6903..b11798d17ae5 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -99,6 +99,8 @@ struct ehci_hcd {			/* one per controller */
                         owned by the companion during a bus suspend */
         unsigned long           port_c_suspend;         /* which ports have
                         the change-suspend feature turned on */
+        unsigned long           suspended_ports;        /* which ports are
+                        suspended */
 
         /* per-HC memory pools (could be per-bus, but ...) */
         struct dma_pool         *qh_pool;       /* qh per active urb */