Since the BT device is off the bus, trying to query it from the udev
database fails.  We need to send the parent's DEVPATH (unfortunately
by pulling in from the $env) and then go from there.

=== modified file 'extras/hid2hci/70-hid2hci.rules'
--- extras/hid2hci/70-hid2hci.rules	2009-07-24 16:06:22 +0000
+++ extras/hid2hci/70-hid2hci.rules	2009-07-27 21:03:40 +0000
@@ -20,8 +20,8 @@
 # Unfortunately the only event seen is the BT device disappearing, so the mouse
 # device needs to be chased down on the USB bus.
 ATTR{bDeviceClass}=="e0", ATTR{bDeviceSubClass}=="01", ATTR{bDeviceProtocol}=="01", \
-  ATTR{idVendor}=="413c", ATTR{bmAttributes}=="e0", \
-  ENV{REMOVE_CMD}="hid2hci --method=dell --devpath=%p --find-sibling-intf=03:01:02"
+  ATTR{idVendor}=="413c", ATTR{bmAttributes}=="e0", IMPORT{parent}="DEVPATH", \
+  ENV{REMOVE_CMD}="hid2hci --method=dell --devpath=$env{DEVPATH} --find-sibling-intf=03:01:02"
 
 # CSR devices
 ATTR{idVendor}=="0a12|0458|05ac", ATTR{idProduct}=="1000", RUN+="hid2hci --method=csr --devpath=%p"

=== modified file 'extras/hid2hci/hid2hci.c'
--- extras/hid2hci/hid2hci.c	2009-07-27 20:45:34 +0000
+++ extras/hid2hci/hid2hci.c	2009-07-27 21:03:40 +0000
@@ -210,11 +210,6 @@
 		return usb_open(dev);
 	}
 
-	/* find matching sibling of the current usb_device, they share the same hub */
-	udev_parent = udev_device_get_parent_with_subsystem_devtype(udev_dev, "usb", "usb_device");
-	if (udev_parent == NULL)
-		return NULL;
-
 	enumerate = udev_enumerate_new(udev);
 	if (enumerate == NULL)
 		return NULL;
@@ -222,7 +217,7 @@
 	udev_enumerate_add_match_subsystem(enumerate, "usb");
 
 	/* match all childs of the parent */
-	util_strscpyl(str, sizeof(str), udev_device_get_sysname(udev_parent), "*", NULL);
+	util_strscpyl(str, sizeof(str), udev_device_get_sysname(udev_dev), "*", NULL);
 	udev_enumerate_add_match_sysname(enumerate, str);
 
 	/* match the specified interface */