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Thu, 05 Mar 2026 04:43:21 -0800 (PST) From: Chunyang Chen To: kuurtb@gmail.com, jic23@kernel.org Cc: andriy.shevchenko@intel.com, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Chunyang Chen Subject: [PATCH v2] iio: adc: ti-ads1018: fix type overflow for data rate Date: Thu, 5 Mar 2026 20:43:02 +0800 Message-Id: <20260305124302.129637-1-chenchunyang0908@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260305021550.120614-1-chenchunyang0908@gmail.com> References: <20260305021550.120614-1-chenchunyang0908@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 variable 'drate' is currently defined as u8. However, the data rate values in ads1018 can reach up to 3300 Hz, which exceeds the maximum value of 255 that a u8 can hold. Change the type of 'drate' to u32 to match the data_rate_mode_to_hz array definition and ensure the data rate is handled correctly. Fixes: bf0bba486b5b ("iio: adc: ti-ads1018: add ti-ads1018 driver") Signed-off-by: Chunyang Chen Reviewed-by: Andy Shevchenko Reviewed-by: Kurt Borja --- v2: - Change drate type to u32 as suggested by Kurt. - Add Fixes tag as requested by Andy. --- drivers/iio/adc/ti-ads1018.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti-ads1018.c b/drivers/iio/adc/ti-ads1018.c index 6246b3cab..0780abd0d 100644 --- a/drivers/iio/adc/ti-ads1018.c +++ b/drivers/iio/adc/ti-ads1018.c @@ -249,7 +249,7 @@ static int ads1018_single_shot(struct ads1018 *ads1018, struct iio_chan_spec const *chan, u16 *cnv) { u8 max_drate_mode =3D ads1018->chip_info->num_data_rate_mode_to_hz - 1; - u8 drate =3D ads1018->chip_info->data_rate_mode_to_hz[max_drate_mode]; + u32 drate =3D ads1018->chip_info->data_rate_mode_to_hz[max_drate_mode]; u8 pga_mode =3D ads1018->chan_data[chan->scan_index].pga_mode; struct spi_transfer xfer[2] =3D { { --=20 2.34.1