iio_find_channel_from_si  552 drivers/iio/industrialio-buffer.c 	ch = iio_find_channel_from_si(indio_dev, scan_index);
iio_find_channel_from_si  573 include/linux/iio/iio.h *iio_find_channel_from_si(struct iio_dev *indio_dev, int si);