CONFIG_CRC16 (not configurable)

modulename: crc16.ko

configname: CONFIG_CRC16

Linux Kernel Configuration
└─>Library routines
└─>CRC16
In linux kernel since version 2.6.14 (release Date: 2005-10-27)  
The CRC16 library functions. Select this if your module uses any of
the functions from <linux/crc16.h>.

source code:
lib/crc16.c