From: sashiko-bot@kernel.org
To: "Shady Abu-Hussein" <shady.abh@gmail.com>
Cc: linux-hwmon@vger.kernel.org
Subject: Re: [PATCH v2] hwmon: (dell-smm) Add Dell Pro Precision 7 16 PW716260 to fan control whitelist
Date: Wed, 11 Nov 2026 17:45:38 +0000 [thread overview]
Message-ID: <sashiko-outbox-209435@kernel.org> (raw)
In-Reply-To: <20261111172733.84217-1-shady.abh@gmail.com>
> On the Dell Pro Precision 7 16 PW716260 the firmware fan control
> cannot be overridden using the default SMM method, writes to pwmX
> are ignored and pwmX_enable returns -EINVAL. The firmware AC fan
> policy also requests speeds below the minimum sustainable speed of
> the fans, so one fan repeatedly stops and restarts every few
> seconds at low load.
>
> Add the machine to the fan control whitelist using the
> I8K_FAN_30A3_31A3 SMM codes. With this, writing 1 to pwm1_enable
> disables automatic fan control, the fans follow the requested
> state (0: off, 1: ~2500 RPM, 2: ~3950 RPM), and writing 2 to
> pwm1_enable restores automatic fan control.
>
> Tested on BIOS 1.5.0 with kernel 7.2.15.
>
> Signed-off-by: Shady Abu-Hussein <shady.abh@gmail.com>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261111172733.84217-1-shady.abh@gmail.com?part=1
next prev parent reply other threads:[~2026-11-11 17:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-11 15:04 [PATCH] hwmon: (dell-smm) Add Dell Pro Precision 7 16 PW716260 to fan control whitelist shadyabh
2026-11-11 15:44 ` Pali Rohár
2026-11-11 16:12 ` sashiko-bot
2026-11-11 17:27 ` [PATCH v2] " Shady Abu-Hussein
2026-11-11 17:45 ` sashiko-bot [this message]
2026-11-12 15:18 ` Guenter Roeck
2026-11-12 15:23 ` Shady Abu-Hussein
2026-11-12 15:43 ` Guenter Roeck
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