Problems about usbhidaction

[Henry Hu]

Hi,

Today I got a new USB keyboard,
ukbd0: <Microsoft Natural\M-. Ergonomic Keyboard 4000, class 0/0, rev
2.00/1.73, addr 2> on uhub3
kbd2 at ukbd0
uhid0: <Microsoft Natural\M-. Ergonomic Keyboard 4000, class 0/0, rev
2.00/1.73, addr 2> on uhub3

Normal keys are sent through ukbd0, and special keys (volume up, etc)
are sent through uhid0.
I tried to use usbhidaction to make the special keys functional, and I
found that there are some problems about usbhidaction:
1. The length of data it tried to read is wrong.