linux-kernel - [PATCH] alienware-wmi: Fix X Series and G Series quirks

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Message-ID: <20241207053759.99608-2-kuurtb@gmail.com>
Date: Sat,  7 Dec 2024 02:38:00 -0300
From: Kurt Borja <kuurtb@...il.com>
To: platform-driver-x86@...r.kernel.org,
	ilpo.jarvinen@...ux.intel.com
Cc: Dell.Client.Kernel@...l.com,
	hdegoede@...hat.com,
	linux-kernel@...r.kernel.org,
	Kurt Borja <kuurtb@...il.com>,
	Armin Wolf <W_Armin@....de>
Subject: [PATCH] alienware-wmi: Fix X Series and G Series quirks

Devices that are known to support the WMI thermal interface do not
support the legacy LED control interface. Make `.num_zones = 0` and
avoid calling alienware_zone_init() if that's the case.

Verified by reading the ACPI tables of all supported devices.

Fixes: 9f6c43041552 ("alienware-wmi: added platform profile support")
Fixes: 1c1eb70e7d23 ("alienware-wmi: extends the list of supported models")

Suggested-by: Armin Wolf <W_Armin@....de>
Signed-off-by: Kurt Borja <kuurtb@...il.com>
---
Suggested here:

[1] https://lore.kernel.org/platform-driver-x86/38399b6a-e31c-4b99-a10e-01dc20649c24@gmx.de/
---
 drivers/platform/x86/dell/alienware-wmi.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/dell/alienware-wmi.c b/drivers/platform/x86/dell/alienware-wmi.c
index 77465ed9b449..e69bf9a7b6c8 100644
--- a/drivers/platform/x86/dell/alienware-wmi.c
+++ b/drivers/platform/x86/dell/alienware-wmi.c
@@ -190,7 +190,7 @@ static struct quirk_entry quirk_asm201 = {
 };
 
 static struct quirk_entry quirk_g_series = {
-	.num_zones = 2,
+	.num_zones = 0,
 	.hdmi_mux = 0,
 	.amplifier = 0,
 	.deepslp = 0,
@@ -199,7 +199,7 @@ static struct quirk_entry quirk_g_series = {
 };
 
 static struct quirk_entry quirk_x_series = {
-	.num_zones = 2,
+	.num_zones = 0,
 	.hdmi_mux = 0,
 	.amplifier = 0,
 	.deepslp = 0,
@@ -687,6 +687,9 @@ static void alienware_zone_exit(struct platform_device *dev)
 {
 	u8 zone;
 
+	if (!quirks->num_zones)
+		return;
+
 	sysfs_remove_group(&dev->dev.kobj, &zone_attribute_group);
 	led_classdev_unregister(&global_led);
 	if (zone_dev_attrs) {
@@ -1229,9 +1232,11 @@ static int __init alienware_wmi_init(void)
 			goto fail_prep_thermal_profile;
 	}
 
-	ret = alienware_zone_init(platform_device);
-	if (ret)
-		goto fail_prep_zones;
+	if (quirks->num_zones > 0) {
+		ret = alienware_zone_init(platform_device);
+		if (ret)
+			goto fail_prep_zones;
+	}
 
 	return 0;
 
-- 
2.47.1