[PATCH] USB: Store port number in usb_device

This patch (as610) adds a field to struct usb_device to store the device's
port number.  This allows us to remove several loops in the hub driver
(searching for a particular device among all the entries in the parent's
array of children).

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 27575e678a7c..e59d1bd52d4f 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -348,6 +348,7 @@ struct usb_device {
         char **rawdescriptors;          /* Raw descriptors for each config */
 
         unsigned short bus_mA;          /* Current available from the bus */
+        u8 portnum;                     /* Parent port number (origin 1) */
 
         int have_langid;                /* whether string_langid is valid */
         int string_langid;              /* language ID for strings */