CONFIG_ISA_DMA_API is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

CONFIG_ISA_DMA_API (not configurable)

modulename: dma-isa.ko

and/or

dma.ko

configname: CONFIG_ISA_DMA_API

Linux/SuperH Kernel Configuration
└─>ISA_DMA_API
In linux kernel since version 2.6.12