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

[Hans de Goede <hdegoede@redhat.com>]

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: 0f0ac158d28f ("platform/x86: asus-wmi: Add support for custom fan curves")
Reported-by: Abhijeet V <abhijeetviswa@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/platform/x86/asus-wmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index a3b83b22a3b1..2104a2621e50 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -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;
 	}
-- 
2.33.1