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>
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 4cbd063..1ef8873 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -2099,13 +2099,8 @@
memset(now_map, 0, sizeof(now_map));
- list_for_each_entry(bus, &usb_bus_list, bus_list) {
- if (!bus->root_hub)
- continue;
-
- if (bus->busnum != hcd->self.busnum)
- continue;
-
+ bus = idr_find(&usb_bus_idr, hcd->self.busnum);
+ if (bus && bus->root_hub) {
collect_usb_address_map(bus->root_hub, now_map);
update_usb_address_map(r8a66597, bus->root_hub, now_map);
}