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Thu, 16 Apr 2026 04:14:59 -0700 (PDT) From: Svyatoslav Ryhel To: Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Hans de Goede , Svyatoslav Ryhel Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/1] iio: Fix iio_multiply_value use in iio_read_channel_processed_scale Date: Thu, 16 Apr 2026 14:14:42 +0300 Message-ID: <20260416111442.61932-2-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260416111442.61932-1-clamor95@gmail.com> References: <20260416111442.61932-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The function iio_multiply_value returns IIO_VAL_INT (1) on success or a negative error number on failure, while iio_read_channel_processed_scale should return an error code or 0. This creates a situation where the expected result is treated as an error. Fix this by checking the iio_multiply_value result separately, instead of passing it as a return value. Fixes: 05f958d003c9 ("iio: Improve iio_read_channel_processed_scale() preci= sion") Signed-off-by: Svyatoslav Ryhel Reviewed-by: Hans de Goede --- drivers/iio/inkern.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 0df0ab3de270..9ce20cb05a9b 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -738,7 +738,11 @@ int iio_read_channel_processed_scale(struct iio_channe= l *chan, int *val, if (ret < 0) return ret; =20 - return iio_multiply_value(val, scale, ret, pval, pval2); + ret =3D iio_multiply_value(val, scale, ret, pval, pval2); + if (ret < 0) + return ret; + + return 0; } else { ret =3D iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_RAW); if (ret < 0) --=20 2.51.0