Sierra Wireless GSM 调制解调器 EM7455 + Android 集成错误

Question

EM7455通过USB连接到单板计算机(NanoPC-T2)。

构建 AndroidRIL_5.1.11 二进制文件并在我的 Android 设备上运行后，我已在 Android 和内核源代码中附加了 AndroidRIL_5.1.11 二进制文件。在 Android 日志上收到以下错误消息：

# 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

任何人知道如何解决这个错误，请帮助我。谢谢！

Answer 1

不是积极的，但这可能是一个已修复的错误一个补丁已添加到 Linux 内核中。

还要确保您的内核中内置有 Sierra Wireless 串行 USB、Sierra Wireless WWAN 和 Qualcomm QMI 驱动程序。