CONFIG_RT2X00_LIB_MMIO (not configurable)

modulename: rt2x00mmio.ko

configname: CONFIG_RT2X00_LIB_MMIO

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>Ralink driver support
└─>RT2X00_LIB_MMIO
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
drivers/net/wireless/ralink/rt2x00/rt2x00mmio.c