From: Vas Zayarskiy <contact@vasily.cc>
To: linux@roeck-us.net, Aleksa Savic <savicaleksa83@gmail.com>,
Jack Doan <me@jackdoan.com>
Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Randy Dunlap <rdunlap@infradead.org>
Subject: [PATCH v5 2/5] hwmon: (aquacomputer_d5next) Expire the initial sensor cache
Date: Sun, 27 Sep 2026 22:13:13 +0300 [thread overview]
Message-ID: <20260927191316.4137752-3-contact@vasily.cc> (raw)
In-Reply-To: <20260927191316.4137752-1-contact@vasily.cc>
The initial update timestamp makes the cache expire at the current
jiffy. Since aqc_read() uses time_after(), a read in that same jiffy can
expose zero-initialized data or skip the first legacy report request.
Initialize the timestamp one tick earlier so the cache starts expired
for every supported device.
Assisted-by: LLM sparse
Signed-off-by: Vas Zayarskiy <contact@vasily.cc>
---
drivers/hwmon/aquacomputer_d5next.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
index 33d292228..0bd1886ef 100644
--- a/drivers/hwmon/aquacomputer_d5next.c
+++ b/drivers/hwmon/aquacomputer_d5next.c
@@ -1534,7 +1534,7 @@ static int aqc_probe(struct hid_device *hdev, const struct hid_device_id *id)
priv->hdev = hdev;
hid_set_drvdata(hdev, priv);
- priv->updated = jiffies - STATUS_UPDATE_INTERVAL;
+ priv->updated = jiffies - STATUS_UPDATE_INTERVAL - 1;
ret = hid_parse(hdev);
if (ret)
next prev parent reply other threads:[~2026-09-27 19:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-27 19:13 [PATCH v5 0/5] hwmon: AMPINEL telemetry support and shared fixes Vas Zayarskiy
2026-09-27 19:13 ` [PATCH v5 1/5] hwmon: (aquacomputer_d5next) Avoid truncating scaled sensor readings Vas Zayarskiy
2026-09-27 19:13 ` Vas Zayarskiy [this message]
2026-09-27 19:13 ` [PATCH v5 3/5] hwmon: (aquacomputer_d5next) Validate incoming status reports Vas Zayarskiy
2026-09-27 19:13 ` [PATCH v5 4/5] hwmon: (aquacomputer_d5next) Skip unknown firmware version offsets Vas Zayarskiy
2026-09-27 19:13 ` [PATCH v5 5/5] hwmon: (aquacomputer_d5next) Add AMPINEL telemetry support Vas Zayarskiy
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