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ACPI: fan: Fix error reporting to user space 

When user get/set cur_state fails, it should be some negative error
value instead of whatever returned by acpi_evaluate_object() or from
acpi_execute_simple_method(). The return value from these apis is
some positive values greater than 0. For example if AE_NOT_FOUND
is returned it will be "5".

In other ACPI drivers, -ENODEV is returned when ACPI_FAILURE(status)
is true. Do the same thing here for thermal sysfs callbacks for
get and set for failures.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Srinivas Pandruvada 2022-02-11 08:09:27 -08:00 committed by Rafael J. Wysocki
parent cfb92440ee
commit 9ddb00a2a1
1 changed files with 2 additions and 2 deletions
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4
drivers/acpi/fan.c
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@ -107,7 +107,7 @@ static int fan_get_state_acpi4(struct acpi_device *device, unsigned long *state)
status = acpi_evaluate_object(device->handle, "_FST", NULL, &buffer);
if (ACPI_FAILURE(status)) {
dev_err(&device->dev, "Get fan state failed\n");
return status;
return -ENODEV;
}
obj = buffer.pointer;
@ -195,7 +195,7 @@ static int fan_set_state_acpi4(struct acpi_device *device, unsigned long state)
fan->fps[state].control);
if (ACPI_FAILURE(status)) {
dev_dbg(&device->dev, "Failed to set state by _FSL\n");
return status;
return -ENODEV;
}
return 0;