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

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Message-ID: <20251221210218.12274-1-timwassink.dev@gmail.com>
Date: Sun, 21 Dec 2025 22:01:48 +0100
From: Tim Wassink <timwassink.dev@...il.com>
To: Corentin Chary <corentin.chary@...il.com>,
	"Luke D. Jones" <luke@...nes.dev>,
	Denis Benato <benato.denis96@...il.com>,
	Hans de Goede <hansg@...nel.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Tim Wassink <timwassink.dev@...il.com>
Subject: [PATCH] platform/x86: asus-nb-wmi: add quirk_asus_ignore_fan for UX3405MA

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.

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",
-- 
2.52.0