diff options
Diffstat (limited to 'drivers/acpi/power.c')
| -rw-r--r-- | drivers/acpi/power.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 7049a7d27c4..0500f719f63 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -631,7 +631,7 @@ int acpi_power_get_inferred_state(struct acpi_device *device, int *state) * We know a device's inferred power state when all the resources * required for a given D-state are 'on'. */ - for (i = ACPI_STATE_D0; i < ACPI_STATE_D3; i++) { + for (i = ACPI_STATE_D0; i < ACPI_STATE_D3_HOT; i++) { list = &device->power.states[i].resources; if (list->count < 1) continue; @@ -660,7 +660,7 @@ int acpi_power_on_resources(struct acpi_device *device, int state) int acpi_power_transition(struct acpi_device *device, int state) { - int result; + int result = 0; if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD)) return -EINVAL; @@ -679,8 +679,11 @@ int acpi_power_transition(struct acpi_device *device, int state) * (e.g. so the device doesn't lose power while transitioning). Then, * we dereference all power resources used in the current list. */ - result = acpi_power_on_list(&device->power.states[state].resources); - if (!result) + if (state < ACPI_STATE_D3_COLD) + result = acpi_power_on_list( + &device->power.states[state].resources); + + if (!result && device->power.state < ACPI_STATE_D3_COLD) acpi_power_off_list( &device->power.states[device->power.state].resources); |