stm32_dfsdm_volatile_reg 58 drivers/iio/adc/stm32-dfsdm-core.c .volatile_reg = stm32_dfsdm_volatile_reg, stm32_dfsdm_volatile_reg 73 drivers/iio/adc/stm32-dfsdm-core.c .volatile_reg = stm32_dfsdm_volatile_reg,