As ACPI spec said, _PMD method is optional. The acpi_power_meter
shouldn't fail to load when the platform hasn't _PMD method.
Signed-off-by: Huisong Li <lihuisong@xxxxxxxxxx>
---
drivers/hwmon/acpi_power_meter.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c
index 6c8a9c863528..2f1c9d97ad21 100644
--- a/drivers/hwmon/acpi_power_meter.c
+++ b/drivers/hwmon/acpi_power_meter.c
@@ -680,8 +680,9 @@ static int setup_attrs(struct acpi_power_meter_resource *resource)
{
int res = 0;
+ /* _PMD method is optional. */
res = read_domain_devices(resource);
- if (res)
+ if (res != -ENODEV)
return res;
if (resource->caps.flags & POWER_METER_CAN_MEASURE) {
--
2.22.0
