linux-kernel - [PATCH 3/3] platform/x86: asus-wmi: Don't load fan curves without fan

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Message-Id: <20221221-asus-fan-v1-3-e07f3949725b@weissschuh.net>
Date:   Wed, 21 Dec 2022 17:59:51 +0000
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Corentin Chary <corentin.chary@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        "Luke D. Jones" <luke@...nes.dev>
Cc:     acpi4asus-user@...ts.sourceforge.net,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 3/3] platform/x86: asus-wmi: Don't load fan curves without fan

If we do not have a fan it does not make sense to load curves for it.
This removes the following warnings from the kernel log:

asus_wmi: fan_curve_get_factory_default (0x00110024) failed: -19
asus_wmi: fan_curve_get_factory_default (0x00110025) failed: -19

Fixes: a2bdf10ce96e ("platform/x86: asus-wmi: Increase FAN_CURVE_BUF_LEN to 32")
Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/platform/x86/asus-wmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 4a289ca7e76c..104188d70988 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -2438,6 +2438,9 @@ static int fan_curve_check_present(struct asus_wmi *asus, bool *available,
 
 	*available = false;
 
+	if (asus->fan_type == FAN_TYPE_NONE)
+		return 0;
+
 	err = fan_curve_get_factory_default(asus, fan_dev);
 	if (err) {
 		return 0;

-- 
2.39.0