diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/device_pm.c | 6 | ||||
| -rw-r--r-- | drivers/acpi/scan.c | 5 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index 3ef075b71870..164d609d7c9e 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -330,6 +330,12 @@ int acpi_bus_init_power(struct acpi_device *device) result = acpi_dev_pm_explicit_set(device, state); if (result) return result; + } else if (state == ACPI_STATE_UNKNOWN) { + /* No power resources and missing _PSC? Try to force D0. */ + state = ACPI_STATE_D0; + result = acpi_dev_pm_explicit_set(device, state); + if (result) + return result; } device->power.state = state; return 0; diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 9801837876b7..f75f25c2e455 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1180,7 +1180,10 @@ static void acpi_bus_get_power_flags(struct acpi_device *device) device->power.flags.power_resources) device->power.states[ACPI_STATE_D3_COLD].flags.os_accessible = 1; - acpi_bus_init_power(device); + if (acpi_bus_init_power(device)) { + acpi_free_power_resources_lists(device); + device->flags.power_manageable = 0; + } } static void acpi_bus_get_flags(struct acpi_device *device) |