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platform/x86: asus-wmi: Fix regression when probing for fan curve control

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The fan curve control patches introduced a regression for at least the
TUF FX506 and possibly other TUF series laptops that do not have support
for fan curve control.

As part of the probing process, asus_wmi_evaluate_method_buf is called
to get the factory default fan curve . The WMI management function
returns 0 on certain laptops to indicate lack of fan curve control
instead of ASUS_WMI_UNSUPPORTED_METHOD. This 0 is transformed to
-ENODATA which results in failure when probing.

Fixes: 0f0ac158d2 ("platform/x86: asus-wmi: Add support for custom fan curves")
Reported-and-tested-by: Abhijeet V <abhijeetviswa@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220205112840.33095-1-hdegoede@redhat.com
This commit is contained in:
Hans de Goede 2022-02-05 12:28:40 +01:00
parent 868d7618d7
commit e3d13da7f7
1 changed files with 1 additions and 1 deletions
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2
drivers/platform/x86/asus-wmi.c
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@ -2223,7 +2223,7 @@ static int fan_curve_check_present(struct asus_wmi *asus, bool *available,
err = fan_curve_get_factory_default(asus, fan_dev);
if (err) {
if (err == -ENODEV)
if (err == -ENODEV || err == -ENODATA)
return 0;
return err;
}