Hi i am using Android 4.2 in my allwinner A20 board.

i used to connect realtek 8192cu usb wifi to my board.

for that i fallow this guide .

http://openlinux.amlogic.com/@api/deki/files/39/=How_to_tune_the_USB_wifi.pdf.

but i am getting error here my log.

# logcat -c
# logcat
--------- beginning of /dev/log/system
D/WifiService( 1741): setWifiEnabled: true pid=2267, uid=1000
--------- beginning of /dev/log/main
D/WifiHW  ( 1741): Begin to insmod /system/vendor/modules/8192cu.ko 
ifname=wlan0 if2name=p2p0 firmware!
D/BluetoothAdapter( 2267): 1112016448: getState() :  mService = null. 
Returning STATE_OFF
[ 6756.093716] cpu up:1
[ 6756.154664] CPU1: Booted secondary processor
[ 6756.176158] sw_usb_enable_hcd: usbc_num = 2
[ 6756.180884] WRN:L876(drivers/usb/host/ehci_sun7i.c):ERR: not support 
sw_usb_enable_ehci
[ 6756.189874] WRN:L762(drivers/usb/host/ohci_sun7i.c):ERR: not support 
sw_usb_enable_ohci
[ 6756.198829] rtl8192cu driver version=v4.0.1_6911.20130308
[ 6756.204855] build time: May 19 2014 17:14:07
[ 6756.209807] 
[ 6756.209812] usb_endpoint_descriptor(0):
[ 6756.215726] bLength=7
[ 6756.218247] bDescriptorType=5
[ 6756.221564] bEndpointAddress=81
[ 6756.225052] wMaxPacketSize=200
[ 6756.228445] bInterval=0
[ 6756.231188] RT_usb_endpoint_is_bulk_in = 1
[ 6756.235742] 
[ 6756.235745] usb_endpoint_descriptor(1):
[ 6756.241709] bLength=7
[ 6756.244239] bDescriptorType=5
[ 6756.247537] bEndpointAddress=2
[ 6756.250961] wMaxPacketSize=200
[ 6756.254360] bInterval=0
[ 6756.257096] RT_usb_endpoint_is_bulk_out = 2
[ 6756.261761] 
[ 6756.261765] usb_endpoint_descriptor(2):
[ 6756.267668] bLength=7
[ 6756.270202] bDescriptorType=5
[ 6756.273501] bEndpointAddress=3
[ 6756.276889] wMaxPacketSize=200
[ 6756.280293] bInterval=0
[ 6756.283005] RT_usb_endpoint_is_bulk_out = 3
[ 6756.287665] 
[ 6756.287669] usb_endpoint_descriptor(3):
[ 6756.293627] bLength=7
[ 6756.296150] bDescriptorType=5
[ 6756.299482] bEndpointAddress=84
[ 6756.302976] wMaxPacketSize=40
[ 6756.306283] bInterval=1
[ 6756.309027] RT_usb_endpoint_is_int_in = 4, Interval = 1
[ 6756.314842] nr_endpoint=4, in_num=2, out_num=2
[ 6756.314847] 
[ 6756.321442] USB_SPEED_HIGH
[ 6756.324546] CHIP TYPE: RTL8188C_8192C
[ 6756.328683] register rtw_netdev_ops to netdev_ops
[ 6756.333929] rtw_handle_dualmac(): pbuddy_padapter == NULL, Set 
pbuddy_padapter
[ 6756.341982] rtw_wdev_alloc(padapter=f00b3000)
[ 6756.349166] Chip Version ID: VERSION_NORMAL_TSMC_CHIP_88C.
[ 6756.355278] RF_Type is 3!!
[ 6756.358627] EEPROM type is E-FUSE
[ 6756.362314] ====> ReadAdapterInfo8192C
[ 6756.366620] Boot from EFUSE, Autoload OK !
[ 6756.511134] EEPROMVID = 0x0bda
[ 6756.514546] EEPROMPID = 0x817a
[ 6756.517941] EEPROMCustomerID : 0x00
[ 6756.521851] EEPROMSubCustomerID: 0x00
[ 6756.525944] RT_CustomerID: 0x00
[ 6756.529492] _ReadMACAddress MAC Address from EFUSE = 00:02:72:37:86:73
[ 6756.536803] EEPROMRegulatory = 0x1
[ 6756.540631] _ReadBoardType(3)
[ 6756.543973] BT Coexistance = disable
[ 6756.547965] mlmepriv.ChannelPlan = 0x02
[ 6756.552288] _ReadPSSetting...bHWPwrPindetect(0)-bHWPowerdown(10) 
,bSupportRemoteWakeup(0)
[ 6756.561436] ### PS params=>  power_mgnt(1),usbss_enable(0) ###
[ 6756.567965] ### AntDivCfg(0)
[ 6756.571229] readAdapterInfo_8192CU(): REPLACEMENT = 1
[ 6756.576879] <==== ReadAdapterInfo8192C in 210 ms
[ 6756.584450] rtw_register_early_suspend
[ 6756.588763] rtw_macaddr_cfg MAC Address  = 00:02:72:37:86:73
[ 6756.595092] MAC Address from pnetdev->dev_addr= 00:02:72:37:86:73
[ 6756.613462] bDriverStopped:1, bSurpriseRemoved:0, bup:0, 
hw_init_completed:0
[ 6756.621715] register rtw_netdev_ops to netdev_ops
[ 6756.626989] register rtw_netdev_if2_ops to netdev_ops
[ 6756.632711] rtw_wdev_alloc(padapter=f00ff000)
[ 6756.639585] Chip Version ID: VERSION_NORMAL_TSMC_CHIP_88C.
[ 6756.645710] RF_Type is 3!!
[ 6756.651026] rtw_register_early_suspend
[ 6756.655261] MAC Address (if2) = 02:02:72:37:86:73
[ 6756.670635] usbcore: registered new interface driver rtl8192cu
D/WifiHW  ( 1741): initial,try_time(0)
D/WifiHW  ( 1741): initial,try_time(1)
D/WifiHW  ( 1741): initial,try_time(2)
D/WifiHW  ( 1741): initial,try_time(3)
D/WifiHW  ( 1741): initial,try_time(4)
D/WifiHW  ( 1741): initial,try_time(5)
D/WifiHW  ( 1741): initial,try_time(6)
[ 6758.041642] CPU1: shutdown
[ 6758.044777] [hotplug]: cpu(0) try to kill cpu(1)
[ 6758.051825] [hotplug]: cpu1 is killed!
D/WifiHW  ( 1741): initial,try_time(7)
D/WifiHW  ( 1741): initial,try_time(8)
[ 6758.338751] cpu up:1
[ 6758.377855] CPU1: Booted secondary processor
D/WifiHW  ( 1741): initial,try_time(9)
D/WifiHW  ( 1741): initial,try_time(10)
D/WifiHW  ( 1741): initial,try_time(11)
D/WifiHW  ( 1741): initial,try_time(12)
[ 6759.293699] CPU1: shutdown
[ 6759.296783] [hotplug]: cpu(0) try to kill cpu(1)
[ 6759.303135] [hotplug]: cpu1 is killed!
D/WifiHW  ( 1741): initial,try_time(13)
D/WifiHW  ( 1741): initial,try_time(14)
[ 6759.578738] cpu up:1
[ 6759.617831] CPU1: Booted secondary processor
D/WifiHW  ( 1741): initial,try_time(15)
D/WifiHW  ( 1741): initial,try_time(16)
D/WifiHW  ( 1741): initial,try_time(17)
[ 6760.306522] CPU1: shutdown
[ 6760.309923] [hotplug]: cpu(0) try to kill cpu(1)
[ 6760.316319] [hotplug]: cpu1 is killed!
D/WifiHW  ( 1741): initial,try_time(18)
D/WifiHW  ( 1741): initial,try_time(19)
D/WifiHW  ( 1741): initial,try_time(20)
D/WifiHW  ( 1741): initial,try_time(21)
[ 6780.393623] cpu up:1
[ 6780.430191] CPU1: Booted secondary processor
D/WifiHW  ( 1741): Enter wifi_unload_driver Function.
[ 6781.354010] +rtw_drv_halt
[ 6781.357014] usbcore: deregistering interface driver rtl8192cu
[ 6781.363702] +rtw_dev_remove
[ 6781.366862] rtw_unregister_early_suspend
[ 6781.371415] rtw_pm_set_ips IPS_NONE
[ 6781.375395] rtw_pm_set_ips: bDriverStopped=1, bup=0, hw_init_completed=0
W/Netd    ( 1235): No subsystem found in netlink event
D/NetlinkEvent( 1235): Unexpected netlink message. type=0x11
[ 6781.444941] CPU1: shutdown
[ 6781.448551] [hotplug]: cpu(0) try to kill cpu(1)
[ 6781.458544] [hotplug]: cpu1 is killed!
[ 6781.499102] rtw_wdev_unregister(wdev=ef28a000)
[ 6781.530468] rtw_sta_flush(eth1)
W/Netd    ( 1235): No subsystem found in netlink event
D/NetlinkEvent( 1235): Unexpected netlink message. type=0x11
[ 6781.598777] <=== rtw_dev_unload
[ 6781.602346] rtw_usb_if1_deinit, hw_init_completed=0
[ 6781.607869] rtw_wdev_unregister(wdev=ef01f200)
[ 6781.640495] rtw_wdev_free(wdev=ef01f200)
[ 6781.646579] free_recv_skb_queue not empty, 8
[ 6781.651797] rtw_unregister_early_suspend
[ 6781.656253] =====> rtl8192c_free_hal_data =====
[ 6781.661452] <===== rtl8192c_free_hal_data =====
[ 6781.666755] rtw_wdev_free(wdev=ef28a000)
[ 6781.673087] free_recv_skb_queue not empty, 8
[ 6781.678067] 
rtw_unregister_early_suspend                                             
[ 6781.682636] =====> rtl8192c_free_hal_data 
=====                                      
[ 6781.687745] <===== rtl8192c_free_hal_data 
=====                                      
[ 6781.693033] -r871xu_dev_remove, 
done                                                 
[ 6781.699016] sw_usb_disable_hcd: usbc_num = 
2                                         
[ 6781.703840] WRN:L823(drivers/usb/host/ehci_sun7i.c):ERR: not support 
sw_usb_disable_ehci
[ 6781.713359] WRN:L709(drivers/usb/host/ohci_sun7i.c):ERR: not support 
sw_usb_disable_ohci
[ 6781.722558] -rtw_drv_halt
[ 6781.738743] cpu up:1
[ 6781.777831] CPU1: Booted secondary processor
E/WifiStateMachine( 1741): Failed to load driver!
E/WifiStateMachine( 1741): DriverFailedState
D/BluetoothAdapter( 2267): 1112016448: getState() :  mService = null. 
Returning STATE_OFF
[ 6782.349846] CPU1: shutdown
[ 6782.352890] [hotplug]: cpu(0) try to kill cpu(1)
[ 6782.359013] [hotplug]: cpu1 is killed!
[ 6782.638789] cpu up:1
[ 6782.677946] CPU1: Booted secondary processor
[ 6783.441530] CPU1: shutdown
[ 6783.444629] [hotplug]: cpu(0) try to kill cpu(1)
[ 6783.451144] [hotplug]: cpu1 is killed!

Kindly tell me what will the error.

Regards
Punith

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