/proc/bus/usb empty

Hi,

I am using linux 2.6.32. I created the system with buildroot and use udev.
When I plug the USB device into system, it show up in the /sys/bus/usb
folder:

# ls /sys/bus/usb/devices/
1-0:1.0    1-1        1-1.2      1-1.2:1.0  1-1:1.0    usb1
# 

But the /proc/bus/usb folder is empty. And I do not have the /dev/bus
folder
# ls /proc/bus/usb/
# 
# ls /dev/bu*
/dev/buttons
# 

How can I make my USB device appear in the /proc/bus/usb and /dev/bus
folder? 

Thanks

mount usbfs -t usbfs  /proc/bus/usb for /proc/bus/usb

for /dev/usb, I don't know, mayne your hotplug helpscript has not same
config that other linux ? ( check mdev / udev / ... )

Thank Michael,

 I made it by adding the following 2 lines to udev rule:

SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device",
NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0660"
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ID_USB_INTERFACES==":0701*:",
GROUP="lp", MODE="660"