diff options
Diffstat (limited to 'drivers/acpi/device_pm.c')
| -rw-r--r-- | drivers/acpi/device_pm.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index e54956ae93d3..81eb15a0cc42 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -53,6 +53,11 @@ const char *acpi_power_state_string(int state) * This function does not update the device's power.state field, but it may * update its parent's power.state field (when the parent's power state is * unknown and the device's power state turns out to be D0). + * + * Also, it does not update power resource reference counters to ensure that + * the power state returned by it will be persistent and it may return a power + * state shallower than previously set by acpi_device_set_power() for @device + * (if that power state depends on any power resources). */ int acpi_device_get_power(struct acpi_device *device, int *state) { @@ -118,7 +123,6 @@ int acpi_device_get_power(struct acpi_device *device, int *state) return 0; } -EXPORT_SYMBOL(acpi_device_get_power); static int acpi_dev_pm_explicit_set(struct acpi_device *adev, int state) { |