CONFIG_USB_SERIAL_WWAN (not configurable)

modulename: usb_wwan.ko

configname: CONFIG_USB_SERIAL_WWAN

Linux Kernel Configuration
└─>Device Drivers
└─>USB support
└─>USB Serial Converter support
└─>USB_SERIAL_WWAN
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
source code:
drivers/usb/serial/usb_wwan.c