CONFIG_ETRAX_SERIAL_PORT4_NO_DMA_IN is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
default or selected kernelversion does not have config value CONFIG_ETRAX_SERIAL_PORT4_NO_DMA_IN.
Result is shown for kernelversion 6.2.5
Ser4 uses no DMA for input
configname: CONFIG_ETRAX_SERIAL_PORT4_NO_DMA_IN
Ser4 DMA in channel
└─>Ser4 uses no DMA for input
In linux kernel since version 2.6.25 (release Date: 2008-04-16)
Do not use DMA for ser4 input.