From: Antoniu Miclaus <antoniu.miclaus@analog.com>
Date: Tue, 31 Mar 2026 10:13:00 +0000 (+0300)
Subject: iio: gyro: adis16260: fix division by zero in write_raw
X-Git-Tag: v7.1-rc6~11^2~9^2~26
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=761e8b489e6cf166c574034b70637f8a7eadd0ee;p=thirdparty%2Flinux.git

iio: gyro: adis16260: fix division by zero in write_raw

Add a validation check for the sampling frequency value before using it
as a divisor. A user writing zero to the sampling_frequency sysfs
attribute triggers a division by zero in the kernel.

Fixes: 089a41985c6c ("staging: iio: adis16260 digital gyro driver")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c
index 586e6cfa14a9..91b9c5f18ec4 100644
--- a/drivers/iio/gyro/adis16260.c
+++ b/drivers/iio/gyro/adis16260.c
@@ -287,6 +287,9 @@ static int adis16260_write_raw(struct iio_dev *indio_dev,
 		addr = adis16260_addresses[chan->scan_index][1];
 		return adis_write_reg_16(adis, addr, val);
 	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (val <= 0)
+			return -EINVAL;
+
 		if (spi_get_device_id(adis->spi)->driver_data)
 			t = 256 / val;
 		else