diff options
Diffstat (limited to 'drivers/base/power/common.c')
| -rw-r--r-- | drivers/base/power/common.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index f48e33385b3e..02812bcabcac 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -128,3 +128,24 @@ void dev_pm_domain_detach(struct device *dev, bool power_off) dev->pm_domain->detach(dev, power_off); } EXPORT_SYMBOL_GPL(dev_pm_domain_detach); + +/** + * dev_pm_domain_set - Set PM domain of a device. + * @dev: Device whose PM domain is to be set. + * @pd: PM domain to be set, or NULL. + * + * Sets the PM domain the device belongs to. The PM domain of a device needs + * to be set before its probe finishes (it's bound to a driver). + * + * This function must be called with the device lock held. + */ +void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd) +{ + if (dev->pm_domain == pd) + return; + + WARN(device_is_bound(dev), + "PM domains can only be changed for unbound devices\n"); + dev->pm_domain = pd; +} +EXPORT_SYMBOL_GPL(dev_pm_domain_set); |