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(nekmmqsilaajbsz5p5z-1.v6.elisa-laajakaista.fi. [2001:99a:d7d:c300:1eea:2a90:84e5:71a7]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5c14b7fc37csm428983e87.29.2026.11.08.09.26.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 08 Nov 2026 09:26:54 -0800 (PST) From: Rupesh Majhi To: Guenter Roeck , "Johannes Cornelis Draaijer (datdenkikniet)" Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, Rupesh Majhi Subject: [PATCH] hwmon: (aht10) Fix update_interval overflow on 64-bit Date: Sun, 8 Nov 2026 19:26:51 +0200 Message-ID: <20261108172651.220121-1-zoone.rupert@gmail.com> X-Mailer: git-send-email 2.43.0 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On 64-bit, update_interval writes are clamped to LONG_MAX ms, but ms_to_ktime() overflows above 9223372036854 ms and the interval wraps. LONG_MAX becomes -1 ms, so every read starts a new measurement and update_interval reads back -1. Clamp to INT_MAX like sht4x, so the limit is the same on all platforms. Fixes: 8c78f0dee437 ("hwmon: Add AHT10 Temperature and Humidity Sensor Driver") Signed-off-by: Rupesh Majhi --- Tested on x86_64 in QEMU with an emulated AHT20. drivers/hwmon/aht10.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/aht10.c b/drivers/hwmon/aht10.c index 6c263cb57766..c9ee50883f5d 100644 --- a/drivers/hwmon/aht10.c +++ b/drivers/hwmon/aht10.c @@ -222,7 +222,7 @@ static int aht10_read_values(struct aht10_data *data) static ssize_t aht10_interval_write(struct aht10_data *data, long val) { - data->min_poll_interval = ms_to_ktime(clamp_val(val, 2000, LONG_MAX)); + data->min_poll_interval = ms_to_ktime(clamp_val(val, 2000, INT_MAX)); return 0; } base-commit: f4e680ffc2e50867c5b590e26a37f8801a31e486 -- 2.43.0