Sierra Wireless GSM 調製解調器 EM7455 + Android 集成錯誤

EM7455 通過 USB 連接單板電腦（NanoPC-T2）。

在建構並在我的 android 設備上執行之後，我在我的 android 和核心原始碼中附加了 AndroidRIL_5.1.11 二進製文件。在 android 日誌上收到以下錯誤消息：

# dmesg | grep sierra                                           
<6>[    1.184000] usbcore: registered new interface driver sierra_net

<6>[   40.552000] usbcore: registered new interface driver sierra

<6>[   40.564000] sierra: v.1.7.42_android_generic_2:USB Driver for Sierra Wireless USB modems

<3>[   47.308000] sierra_net: module is already loaded

<6>[   87.844000] sierra 1-1.1:1.0: Sierra USB modem converter detected

<4>[   87.872000] sierra_remove_sysfs_attrs 
usb_get_serial_port_data(port_tmp) = 0xd8c90000


<4>[   87.880000] kfree at sierra_remove_sysfs_attrs

<6>[   87.884000] sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0

<6>[   87.892000] sierra 1-1.1:1.0: device disconnected

<6>[   90.920000] sierra 1-1.1:1.0: Sierra USB modem converter detected
<4>[   90.948000] sierra_remove_sysfs_attrs 
usb_get_serial_port_data(port_tmp) = 0xda6b8d80

<4>[   90.956000] kfree at sierra_remove_sysfs_attrs

<6>[   90.960000] sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0

<6>[   90.968000] sierra 1-1.1:1.0: device disconnected


127|root@nanopi2:/ # dmesg | grep sierra                                       
<6>[    1.184000] usbcore: registered new interface driver sierra_net
<6>[   40.552000] usbcore: registered new interface driver sierra
<6>[   40.564000] sierra: v.1.7.42_android_generic_2:USB Driver for Sierra Wireless USB modems

<3>[   47.308000] sierra_net: module is already loaded
<6>[   87.844000] sierra 1-1.1:1.0: Sierra USB modem converter detected
<4>[   87.872000] sierra_remove_sysfs_attrs usb_get_serial_port_data(port_tmp) = 0xd8c90000

<4>[   87.880000] kfree at sierra_remove_sysfs_attrs

<6>[   87.884000] sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0

<6>[   87.892000] sierra 1-1.1:1.0: device disconnected

<6>[   90.920000] sierra 1-1.1:1.0: Sierra USB modem converter detected

<4>[   90.948000] sierra_remove_sysfs_attrs 

usb_get_serial_port_data(port_tmp) = 0xda6b8d80
<4>[   90.956000] kfree at sierra_remove_sysfs_attrs
<6>[   90.960000] sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0

<6>[   90.968000] sierra 1-1.1:1.0: device disconnected

任何知道如何解決此錯誤的人，請幫助我。謝謝！

不是肯定的，但這可能是通過添加到 Linux 核心的更新檔修復的錯誤。

還要確保您的核心中內置了 Sierra Wireless Serial USB、Sierra Wireless WWAN 和 Qualcomm QMI 驅動程序。

引用自：https://unix.stackexchange.com/questions/372450