linux-kernel - Re: [PATCH] platform/x86: asus-nb-wmi: add quirk_asus_ignore

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Message-ID: <b02a7c96-9653-4ab2-ac4a-86d365af1a2d@gmail.com>
Date: Mon, 22 Dec 2025 03:54:23 +0100
From: Denis Benato <benato.denis96@...il.com>
To: Tim Wassink <timwassink.dev@...il.com>,
 Corentin Chary <corentin.chary@...il.com>, "Luke D. Jones"
 <luke@...nes.dev>, Hans de Goede <hansg@...nel.org>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] platform/x86: asus-nb-wmi: add quirk_asus_ignore_fan for
 UX3405MA


On 12/21/25 22:01, Tim Wassink wrote:
> The ASUS Zenbook 14 (UX3405MA) uses a newer WMI interface for thermal
> management that does not support the legacy WMI fan control methods.
> Currently, this results in ENODEV (-19) errors in dmesg when the driver
> attempts to fetch factory fan curve defaults.
>
> Add a quirk to use quirk_asus_ignore_fan to silence these errors and
> signal that legacy fan control is intentionally unsupported, as thermal
> policies are handled through the platform_profile interface.
It is my understanding that this patch suppresses the error,
while maintaining the current behavior in every other aspect,
correct?
> Signed-off-by: Tim Wassink <timwassink.dev@...il.com>
> ---
>  drivers/platform/x86/asus-nb-wmi.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
> index 6a62bc5b02fd..eaa8abe506cb 100644
> --- a/drivers/platform/x86/asus-nb-wmi.c
> +++ b/drivers/platform/x86/asus-nb-wmi.c
> @@ -544,6 +544,15 @@ static const struct dmi_system_id asus_quirks[] = {
>  		},
>  		.driver_data = &quirk_asus_zenbook_duo_kbd,
>  	},
> +	{
> +		.callback = dmi_matched,
> +		.ident = "ASUS Zenbook 14 UX3405MA",
> +		.matches = {
> +			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
> +			DMI_MATCH(DMI_PRODUCT_NAME, "UX3405MA"),
> +		},
> +		.driver_data = &quirk_asus_ignore_fan,
> +	},
>  	{
>  		.callback = dmi_matched,
>  		.ident = "ASUS ROG Z13",