OK, I juste updated the line

#define HUAWEI_PRODUCT_E353 0x1506

to

#define HUAWEI_PRODUCT_E353 0x15d3

After running usb_modeswitch I get :

[ 83.070870] usb 2-1.1: USB disconnect, device number 3
[ 84.590746] usb 2-1.1: new high speed USB device number 5 using fsl-ehci
[ 85.008534] option ...

I compile the kernel using the sources given by UDOO :

https://github.com/UDOOboard/Kernel_Unico

Last commit on July 2014.

I'll update my code.

I have no module loaded. I didn't compile the drivers as modules but as built-in features.

My kernel version is 3.0.35.

I do have the right drivers in my kernel. Here is a part of the config file for usb-serial, usb-serial-wwan and usb-serial-option support :

#
# USB port drivers
#
CONFIG_USB_SERIAL=y
# CONFIG_USB_SERIAL_CONSOLE is not set
# CONFIG_USB_EZUSB is not set
CONFIG_USB_SERIAL_GENERIC=y
# CONFIG_USB ...

Before usb_modeswitch :

Bus 002 Device 003: ID 12d1:15d2 Huawei Technologies Co., Ltd.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
idVendor 0x12d1 Huawei Technologies Co ...

Hi,

I try to figure out how to connect my Huawei E3531 dongle on my embedded device. This is a UDOO board with a custom Linux built from Buildroot. In the kernel, I checked those options :

-Device Drivers --->
- Network device support --->
- PPP
- USB support --->
- <*> USB Modem (CDC ACM ...