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commit 24febc99ca725dcf42d57168a2f4e8a75a5ade92 upstream. On success, ad74413r_get_single_adc_result() returns IIO_VAL_INT aka 1. So currently, the IIO_CHAN_INFO_PROCESSED case is effectively equivalent to the IIO_CHAN_INFO_RAW case, and we never call ad74413r_adc_to_resistance_result() to convert the adc measurement to ohms. Check ret for being negative rather than non-zero. Fixes: fea251b6a5dbd (iio: addac: add AD74413R driver) Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20230503095817.452551-1-linux@rasmusvillemoes.dk Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>