[   63.810609] rt2870sta: module is from the staging directory, the quality is unknown, you have been warned.
[   63.829797] rtusb init --->
[   63.830352] === pAd = e0ae5000, size = 463892 ===
[   63.830355] <-- RTMPAllocAdapterBlock, Status=0
[   63.832485] usbcore: registered new interface driver rt2870
[   78.007824] <-- RTMPAllocTxRxRingMemory, Status=0
[   78.010235] -->RTUSBVenderReset
[   78.010355] <--RTUSBVenderReset
[   78.286451] 1. Phy Mode = 0
[   78.286459] 2. Phy Mode = 0
[   78.316453] RTMPSetPhyMode: channel is out of range, use first channel=1 
[   78.325193] 3. Phy Mode = 0
[   78.330197] MCS Set = 00 00 00 00 00
[   78.339708] <==== rt28xx_init, Status=0
[   78.341444] 0x1300 = 00073200
[   88.642023] wlan0: no IPv6 routers present
[   90.665496] ===>rt_ioctl_giwscan. 1(1) BSS returned, data->length = 170
[   90.666072] ==>rt_ioctl_siwfreq::SIOCSIWFREQ[cmd=0x8b04] (Channel=1)
[   92.953375] usb 1-2: USB disconnect, address 2
[   92.953429] Bulk In Failed. Status=-108, BIIdx=0x6, BIRIdx=0x6, actual_length= 0x0
[   92.956545] rtusb_disconnect: unregister usbnet usb-0000:00:1d.7-2
[   92.956556] RtmpOSNetDevDetach(): RtmpOSNetDeviceDetach(), dev->name=wlan0!
[   92.956609] device disconnected