diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-28 01:17:49 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-10-28 01:17:49 +0100 |
| commit | dd6c26be3bb3e98d4811780f831bbc246dae54c8 (patch) | |
| tree | 5b0cce644ee725386b2c4539afc91459e1913cd9 /drivers/acpi | |
| parent | c0ced86d38f418448dce1ca8a825dfd16ee9a23a (diff) | |
| parent | 33cf00e5708290f7e57d949219ef443a2aef34e0 (diff) | |
Merge branch 'acpi-pm'
* acpi-pm:
spi: attach/detach SPI device to the ACPI power domain
i2c: attach/detach I2C client device to the ACPI power domain
ACPI / PM: allow child devices to ignore parent power state
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/device_pm.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index a94383d1f350..d42b2fb5a7e9 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -118,9 +118,10 @@ int acpi_device_get_power(struct acpi_device *device, int *state) /* * If we were unsure about the device parent's power state up to this * point, the fact that the device is in D0 implies that the parent has - * to be in D0 too. + * to be in D0 too, except if ignore_parent is set. */ - if (device->parent && device->parent->power.state == ACPI_STATE_UNKNOWN + if (!device->power.flags.ignore_parent && device->parent + && device->parent->power.state == ACPI_STATE_UNKNOWN && result == ACPI_STATE_D0) device->parent->power.state = ACPI_STATE_D0; @@ -177,7 +178,8 @@ int acpi_device_set_power(struct acpi_device *device, int state) acpi_power_state_string(state)); return -ENODEV; } - if (device->parent && (state < device->parent->power.state)) { + if (!device->power.flags.ignore_parent && + device->parent && (state < device->parent->power.state)) { dev_warn(&device->dev, "Cannot transition to power state %s for parent in %s\n", acpi_power_state_string(state), |