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Sun, 12 Jul 2026 13:25:11 -0700 (PDT) From: Nikhil Gautam To: Jonathan Cameron Cc: David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Stefan Windfeldt-Prytz , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Nikhil Gautam Subject: [PATCH v1 3/4] iio: light: opt4001: Reject integration times with a non-zero seconds part Date: Mon, 13 Jul 2026 01:54:50 +0530 Message-Id: <20260712202451.20822-4-nikhilgtr@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20260712202451.20822-1-nikhilgtr@gmail.com> References: <20260712202451.20822-1-nikhilgtr@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: 8bit opt4001_write_raw() only looks at val2 when setting the integration time, so a write such as 1.000600 is silently accepted as 600 us. Return -EINVAL if val is non-zero. Signed-off-by: Nikhil Gautam --- drivers/iio/light/opt4001.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/light/opt4001.c b/drivers/iio/light/opt4001.c index bdb1eadbd450..31a5397926eb 100644 --- a/drivers/iio/light/opt4001.c +++ b/drivers/iio/light/opt4001.c @@ -288,6 +288,8 @@ static int opt4001_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_INT_TIME: + if (val) + return -EINVAL; int_time = opt4001_als_time_to_index(val2); if (int_time < 0) return int_time; -- 2.39.5