usb: core: switch bus numbering to using idr

USB bus numbering is based on directly dealing with bitmaps and
defines a separate list of busses.
This can be simplified and unified by using existing idr functionality.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 89533ba38691..0d348fa84a66 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -375,7 +375,6 @@ struct usb_bus {
         struct usb_devmap devmap;       /* device address allocation map */
         struct usb_device *root_hub;    /* Root hub */
         struct usb_bus *hs_companion;   /* Companion EHCI bus, if any */
-        struct list_head bus_list;      /* list of busses */
 
         struct mutex usb_address0_mutex; /* unaddressed device mutex */