I  try to use OTG device feature, but meet this

###
root@lemaker:~# 
WRN:L2728(/home/bananapi/bananapi/lemaker-bsp/linux-sunxi/drivers/usb/sunxi_usb/udc/sw_udc.c):ERR:
 
usb device is not active
ep_matches, wrn: endpoint already claimed, ep(0xc08f7fbc, 0xede54a00, 
ep1-bulk)
ep_matches, wrn: endpoint already claimed, ep(0xc08f7fbc, 0xede54a00, 
ep1-bulk)
ep_matches, wrn: endpoint already claimed, ep(0xc08f8008, 0xede54a00, 
ep2-bulk)
<6>g_serial gadget: Gadget Serial v2.4
<6>g_serial gadget: g_serial ready
WRN:L2762(/home/bananapi/bananapi/lemaker-bsp/linux-sunxi/drivers/usb/sunxi_usb/udc/sw_udc.c):ERR:
 
usb device is not active
###

I am using sunxin 3.4.103 kernel.  I tried 3.4.79, the same as 3.4.103 
result. 

Is there any one meet the similar problem and solved?

Lee

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