CONFIG_CPU_NO_EFFICIENT_FFS (not configurable)

configname: CONFIG_CPU_NO_EFFICIENT_FFS

Linux Kernel Configuration
└─>General architecture-dependent options
└─>CPU_NO_EFFICIENT_FFS
In linux kernel since version 3.10 (release Date: 2013-06-30)  
is depended by
CONFIG_M547x
CONFIG_M548x