各位，请问一下USB无线网卡的固件是放在/lib/firmware目录吧，可是我这么做了之后还是出现下面的错误信息，是怎么回事呢？
[root@FriendlyARM /]# usb 1-1: ar9170.fw firmware file not found, trying old firmware...
usb 1-1: new full speed USB device using s3c2410-ohci and address 3
usb 1-1: New USB device found, idVendor=0cf3, idProduct=7015
usb 1-1: New USB device strings: Mfr=16, Product=32, SerialNumber=48
usb 1-1: Product: UB95
usb 1-1: Manufacturer: ATHEROS
usb 1-1: SerialNumber: 12345
usb 1-1: reset full speed USB device using s3c2410-ohci and address 3
usb 1-1: USB setup failed (-110).
