From: Yasin Lee <yasin.lee.x@gmail.com>
Date: Fri, 13 Feb 2026 15:14:44 +0000 (+0800)
Subject: iio: proximity: hx9023s: Protect against division by zero in set_samp_freq
X-Git-Tag: v7.0-rc4~15^2~7^2~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a318cfc0853706f1d6ce682dba660bc455d674ef;p=thirdparty%2Fkernel%2Fstable.git

iio: proximity: hx9023s: Protect against division by zero in set_samp_freq

Avoid division by zero when sampling frequency is unspecified.

Fixes: 60df548277b7 ("iio: proximity: Add driver support for TYHX's HX9023S capacitive proximity sensor")
Signed-off-by: Yasin Lee <yasin.lee.x@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---

diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023s.c
index ad839db6b326b..17e00ee2b6f84 100644
--- a/drivers/iio/proximity/hx9023s.c
+++ b/drivers/iio/proximity/hx9023s.c
@@ -719,6 +719,9 @@ static int hx9023s_set_samp_freq(struct hx9023s_data *data, int val, int val2)
 	struct device *dev = regmap_get_device(data->regmap);
 	unsigned int i, period_ms;
 
+	if (!val && !val2)
+		return -EINVAL;
+
 	period_ms = div_u64(NANO, (val * MEGA + val2));
 
 	for (i = 0; i < ARRAY_SIZE(hx9023s_samp_freq_table); i++) {