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hwmon: (acpi_power_meter) Fix a check for the return value of read_domain_devices().

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After commit fabb1f813e ("hwmon: (acpi_power_meter) Fix fail to load
module on platform without _PMD method"),
the acpi_power_meter driver fails to load if the platform has _PMD method.

To address this, add a check for successful read_domain_devices().
Tested on Nvidia Grace machine.

Fixes: fabb1f813e ("hwmon: (acpi_power_meter) Fix fail to load module on platform without _PMD method")
Signed-off-by: Kazuhiro Abe <fj1078ii@aa.jp.fujitsu.com>
Link: https://lore.kernel.org/r/20250115073532.3211000-1-fj1078ii@aa.jp.fujitsu.com
[groeck: Dropped unnecessary () from expression]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Kazuhiro Abe 2025-01-15 07:35:32 +00:00 committed by Guenter Roeck
parent e2c68cea43
commit 8d6bf2e105
1 changed files with 1 additions and 1 deletions
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2
drivers/hwmon/acpi_power_meter.c
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@ -682,7 +682,7 @@ static int setup_attrs(struct acpi_power_meter_resource *resource)
/* _PMD method is optional. */
res = read_domain_devices(resource);
if (res != -ENODEV)
if (res && res != -ENODEV)
return res;
if (resource->caps.flags & POWER_METER_CAN_MEASURE) {