关于在mini2440上使用usb无线网卡的问题

插入华硕usb无线网卡后，出现如下信息：
[root@FriendlyARM /]# usb 1-1.2: new full speed USB device using s3c2410-ohci a5
usb 1-1.2: New USB device found, idVendor=0b05, idProduct=1723                  
usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0            
usb 1-1.2: Product: 802.11 bg WLAN                                              
usb 1-1.2: Manufacturer: Ralink                                                
usb 1-1.2: configuration #1 chosen from 1 choice

[root@FriendlyARM /]# ifconfig                                                  
lo        Link encap:Local Loopback                                            
          inet addr:127.0.0.1  Mask:255.0.0.0                                  
          UP LOOPBACK RUNNING  MTU:16436  Metric:1                              
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0                    
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0                  
          collisions:0 txqueuelen:0                                            
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)                                
                                                                                
[root@FriendlyARM /]# ifconfig wlan0 up                                        
ifconfig: SIOCGIFFLAGS: No such device

请问各位大侠，这是什么问题？是驱动的问题吗？

不要沉了呀

根据 http://cateee.net/lkddb/web-lkddb/RT73USB.html,我想你需要加载rt73usb驱动