platform/x86: asus-wmi: Ignore return value when writing thermal policy

On some machines like the ASUS Vivobook S14 writing the thermal policy
returns the currently writen thermal policy instead of an error code.

Ignore the return code to avoid falsely returning an error when the
thermal policy was written successfully.

Reported-by: auslands-kv@gmx.de
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219517
Fixes: 2daa86e78c49 ("platform/x86: asus_wmi: Support throttle thermal policy")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20241124171941.29789-1-W_Armin@gmx.de
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index ba8b6d028f9fea0a2b1933fb225668adaaad2b9a..8bd187e8b47f8009a382e4ca73e9864a6b4dee7e 100644 (file)
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -3696,7 +3696,6 @@ static int asus_wmi_custom_fan_curve_init(struct asus_wmi *asus)
 /* Throttle thermal policy ****************************************************/
 static int throttle_thermal_policy_write(struct asus_wmi *asus)
 {
-       u32 retval;
        u8 value;
        int err;
 
@@ -3718,8 +3717,8 @@ static int throttle_thermal_policy_write(struct asus_wmi *asus)
                value = asus->throttle_thermal_policy_mode;
        }
 
-       err = asus_wmi_set_devstate(asus->throttle_thermal_policy_dev,
-                                   value, &retval);
+       /* Some machines do not return an error code as a result, so we ignore it */
+       err = asus_wmi_set_devstate(asus->throttle_thermal_policy_dev, value, NULL);
 
        sysfs_notify(&asus->platform_device->dev.kobj, NULL,
                        "throttle_thermal_policy");
@@ -3729,12 +3728,6 @@ static int throttle_thermal_policy_write(struct asus_wmi *asus)
                return err;
        }
 
-       if (retval != 1) {
-               pr_warn("Failed to set throttle thermal policy (retval): 0x%x\n",
-                       retval);
-               return -EIO;
-       }
-
        /* Must set to disabled if mode is toggled */
        if (asus->cpu_fan_curve_available)
                asus->custom_fan_curves[FAN_CURVE_DEV_CPU].enabled = false;