xhci: Store the "real" root port number.

Since the xHCI driver now has split USB2/USB3 roothubs, devices under each
roothub can have duplicate "fake" port numbers.  For the next set of
patches, we need to keep track of the "real" port number that the xHCI
host uses to index into the port status arrays.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 2 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 9afce47e69df..1755c668ac05 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -922,6 +922,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
                         top_dev = top_dev->parent)
                 /* Found device below root hub */;
         dev->fake_port = top_dev->portnum;
+        dev->real_port = port_num;
         xhci_dbg(xhci, "Set root hub portnum to %d\n", port_num);
         xhci_dbg(xhci, "Set fake root hub portnum to %d\n", dev->fake_port);
 
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index bfb3fab20795..ec4817003a56 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -799,6 +799,7 @@ struct xhci_virt_device {
         u32                             cmd_status;
         struct list_head                cmd_list;
         u8                              fake_port;
+        u8                              real_port;
 };