From: Nikhil Gautam <nikhilgtr@gmail.com>
To: Jonathan Cameron <jic23@kernel.org>
Cc: "David Lechner" <dlechner@baylibre.com>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Stefan Windfeldt-Prytz" <stefan.windfeldt-prytz@axis.com>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
"Nikhil Gautam" <nikhilgtr@gmail.com>
Subject: [PATCH v3 3/4] iio: light: opt4001: Reject integration times with a non-zero seconds part
Date: Tue, 14 Jul 2026 17:01:33 +0530 [thread overview]
Message-ID: <20260714113134.3445-4-nikhilgtr@gmail.com> (raw)
In-Reply-To: <20260714113134.3445-1-nikhilgtr@gmail.com>
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.
Fixes: 9a9608418292 ("iio: light: Add support for TI OPT4001 light sensor")
Signed-off-by: Nikhil Gautam <nikhilgtr@gmail.com>
---
drivers/iio/light/opt4001.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/iio/light/opt4001.c b/drivers/iio/light/opt4001.c
index a0f174888384..bb4be6384e4c 100644
--- a/drivers/iio/light/opt4001.c
+++ b/drivers/iio/light/opt4001.c
@@ -269,6 +269,9 @@ 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
next prev parent reply other threads:[~2026-07-14 11:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-14 11:31 [PATCH v3 0/4] iio: light: opt4001: Fixes from code review Nikhil Gautam
2026-07-14 11:31 ` [PATCH v3 1/4] iio: light: opt4001: Fix power down clearing bits of the wrong register Nikhil Gautam
2026-07-14 11:31 ` [PATCH v3 2/4] iio: light: opt4001: Fix incompatible pointer type passed to div_u64_rem() Nikhil Gautam
2026-07-14 11:31 ` Nikhil Gautam [this message]
2026-07-14 11:31 ` [PATCH v3 4/4] iio: light: opt4001: Fix reversed GENMASK() arguments in fault count mask Nikhil Gautam
2026-07-14 12:44 ` [PATCH v3 0/4] iio: light: opt4001: Fixes from code review Andy Shevchenko
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