AD7887_CH1 86 drivers/iio/adc/ad7887.c st->ring_msg = &st->msg[AD7887_CH1]; AD7887_CH1 306 drivers/iio/adc/ad7887.c spi_message_init(&st->msg[AD7887_CH1]); AD7887_CH1 307 drivers/iio/adc/ad7887.c spi_message_add_tail(&st->xfer[3], &st->msg[AD7887_CH1]);