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Sun, 08 Feb 2026 19:39:57 -0800 (PST) From: Yasin Lee Date: Mon, 09 Feb 2026 11:37:03 +0800 Subject: [PATCH 2/5] iio: proximity: hx9023s: Protect against division by zero in set_samp_freq Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260209-upstream-20260219-v1-2-2b4d74e309d1@gmail.com> References: <20260209-upstream-20260219-v1-0-2b4d74e309d1@gmail.com> In-Reply-To: <20260209-upstream-20260219-v1-0-2b4d74e309d1@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=996; i=yasin.lee.x@gmail.com; h=from:subject:message-id; bh=DNGsEtjd1j4ZuRGsLgacguqxXG3+8LAwUt2gLAMGk9c=; b=owGbwMvMwCEYyfeRr6Zs90zG02pJDJmdYT/Sjb12bWr+PTs7xfTOlAXBawLOTt9VdZRFXmkbc 9+89xted5SyMAhyMMiKKbKcef2GNV/14Z7g364ZMHNYmUCGMHBxCsBERN8wMvRqz2Nl3XXIwfDF /9fzg7SflZoJ/f6k63PY2/7py//n5dwZGd7nWTe2Xr9z6nd9z5zO6g3+0lonvKesu7Vv+Xw1/kr 3jwsB X-Developer-Key: i=yasin.lee.x@gmail.com; a=openpgp; fpr=CCEBEC056F25E1BC53FB4568590EF10E7C76BB99 Avoid division by zero when sampling frequency is unspecified by falling back to a default 100ms sampling period. Signed-off-by: Yasin Lee --- drivers/iio/proximity/hx9023s.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/iio/proximity/hx9023s.c b/drivers/iio/proximity/hx9023s.c index ad839db6b326..eb4902d18d74 100644 --- a/drivers/iio/proximity/hx9023s.c +++ b/drivers/iio/proximity/hx9023s.c @@ -719,7 +719,11 @@ 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; - period_ms = div_u64(NANO, (val * MEGA + val2)); + if (!val && !val2) + /* Fallback to a safe default sampling period */ + period_ms = 100; + else + period_ms = div_u64(NANO, (val * MEGA + val2)); for (i = 0; i < ARRAY_SIZE(hx9023s_samp_freq_table); i++) { if (period_ms == hx9023s_samp_freq_table[i]) -- 2.43.0