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Fri, 13 Feb 2026 07:22:09 -0800 (PST) From: Yasin Lee Date: Fri, 13 Feb 2026 23:14:44 +0800 Subject: [PATCH v3 2/4] iio: proximity: hx9023s: Protect against division by zero in set_samp_freq Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260213-upstream-20260219-v3-2-df9371d29f5c@gmail.com> References: <20260213-upstream-20260219-v3-0-df9371d29f5c@gmail.com> In-Reply-To: <20260213-upstream-20260219-v3-0-df9371d29f5c@gmail.com> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , yasin.lee.x@outlook.com Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Yasin Lee X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=872; i=yasin.lee.x@gmail.com; h=from:subject:message-id; bh=P46HKoi8ZF7lBMC37WYjsZNDcBWA1dpuzLN4UTPe4G4=; b=owGbwMvMwCEYyfeRr6Zs90zG02pJDJn9jn3M3iIxUrzxv+d6OK54+KP92g+ORwzWE5WkFSTEN jadCPbrKGVhEORgkBVTZDnz+g1rvurDPcG/XTNg5rAygQxh4OIUgIlM+cjwV0QyWUPlYZ9QXKbu yem8W3cyFl/YX/hFae4p1b6qp1Hd3YwMrb3zqpuswhJef3mQLvF09fWqnaJr56oqWITMlHq8LV5 qPQA= X-Developer-Key: i=yasin.lee.x@gmail.com; a=openpgp; fpr=CCEBEC056F25E1BC53FB4568590EF10E7C76BB99 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 Reviewed-by: Andy Shevchenko --- drivers/iio/proximity/hx9023s.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023= s.c index ad839db6b326..17e00ee2b6f8 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 *d= ata, int val, int val2) struct device *dev =3D regmap_get_device(data->regmap); unsigned int i, period_ms; =20 + if (!val && !val2) + return -EINVAL; + period_ms =3D div_u64(NANO, (val * MEGA + val2)); =20 for (i =3D 0; i < ARRAY_SIZE(hx9023s_samp_freq_table); i++) { --=20 2.43.0