uwb: create a uwb bus type and add in-range peer devices to it

Documentation/usb/WUSB-Design-overview.txt states that UWB devices seen
by a UWB radio controller are added to /sys/bus/uwb/devices, but this
was not actually being done.  This functionality is needed in order for
UWB peer devices to be enumerated by user mode tools.  This patch
creates a uwb bus type and adds UWB peer devices to it as they are
discovered by the radio controller.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/uwb/driver.c b/drivers/uwb/driver.c
index 3e5454aba5d4..776bcb3c2140 100644
--- a/drivers/uwb/driver.c
+++ b/drivers/uwb/driver.c
@@ -121,9 +121,19 @@ static int __init uwb_subsys_init(void)
         result = class_register(&uwb_rc_class);
         if (result < 0)
                 goto error_uwb_rc_class_register;
+
+        /* Register the UWB bus */
+        result = bus_register(&uwb_bus_type);
+        if (result) {
+                pr_err("%s - registering bus driver failed\n", __func__);
+                goto exit_bus;
+        }
+
         uwb_dbg_init();
         return 0;
 
+exit_bus:
+        class_unregister(&uwb_rc_class);
 error_uwb_rc_class_register:
         uwb_est_destroy();
 error_est_init:
@@ -134,6 +144,7 @@ module_init(uwb_subsys_init);
 static void __exit uwb_subsys_exit(void)
 {
         uwb_dbg_exit();
+        bus_unregister(&uwb_bus_type);
         class_unregister(&uwb_rc_class);
         uwb_est_destroy();
         return;