关于NUC972开发板linux系统通过USB连接4G模块问题

新塘NUC972开发板，内核linux3.10.x
4G模块为ME909S模块，参照模块移植手册更改
开发板通过USB连接909模块后，如下信息：
usb 1-2: new high-speed USB device number 2 using nuc970-ehci
usb 1-2: device descriptor read/64, error -71
cdc_ether 1-2:2.0 usb0: register 'cdc_ether' at usb-nuc970-ehci-2, CDC Ethernet Device, 02:1e:10:1f:00:00
option 1-2:2.2: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB0
option 1-2:2.3: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB1
option 1-2:2.4: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB2
option 1-2:2.5: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB3
option 1-2:2.6: GSM modem (1-port) converter detected
usb 1-2: GSM modem (1-port) converter now attached to ttyUSB4

没有读出PIDVID等信息，下面的几条ttyusb是不是说USB端口映射成功了，第一次做这种，请问问题出在哪里？