devm_iio_backend_request_buffer
ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(&spi->dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(&pdev->dev, st->back, indio_dev);
ret = devm_iio_backend_request_buffer(dev, st->back, indio_dev);
EXPORT_SYMBOL_NS_GPL(devm_iio_backend_request_buffer, "IIO_BACKEND");
int devm_iio_backend_request_buffer(struct device *dev,