mini2440接罗技摄像头c500不能用后输出：
usb 1-1.1: new full speed USB device using s3c2410-ohci and address 3
usb 1-1.1: New USB device found, idVendor=046d, idProduct=0804
usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=2
usb 1-1.1: SerialNumber: C1DF4F60
usb 1-1.1: configuration #1 chosen from 1 choice
uvcvideo: Found UVC 1.00 device <unnamed> (046d:0804)
uvcvideo: No valid video chain found.
这款罗技摄像头是uvc设备，为什么在mini2440上不能用啊？诚请高手解答！！！！
