CDC Composite Device (ACM and mass storage)

modulename: g_acm_ms.ko

configname: CONFIG_USB_G_ACM_MS

USB Gadget Drivers
└─>CDC Composite Device (ACM and mass storage)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This driver provides two functions in one configuration:
a mass storage, and a CDC ACM (serial port) link.

Say "y" to link the driver statically, or "m" to build a
dynamically linked module called "g_acm_ms".

source code: