DFSDM_MAX_PERIOD_SIZE 59 sound/soc/stm/stm32_adfsdm.c .period_bytes_max = DFSDM_MAX_PERIOD_SIZE, DFSDM_MAX_PERIOD_SIZE 60 sound/soc/stm/stm32_adfsdm.c .buffer_bytes_max = DFSDM_MAX_PERIODS * DFSDM_MAX_PERIOD_SIZE DFSDM_MAX_PERIOD_SIZE 306 sound/soc/stm/stm32_adfsdm.c unsigned int size = DFSDM_MAX_PERIODS * DFSDM_MAX_PERIOD_SIZE;