diff options
Diffstat (limited to 'drivers/base/power/main.c')
| -rw-r--r-- | drivers/base/power/main.c | 30 |
1 files changed, 4 insertions, 26 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 7b3cc3c15b9..eb9f38d0aa5 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -33,28 +33,7 @@ DEFINE_MUTEX(dpm_list_mtx); int (*platform_enable_wakeup)(struct device *dev, int is_on); - -/** - * device_pm_set_parent - Specify power dependency. - * @dev: Device who needs power. - * @parent: Device that supplies power. - * - * This function is used to manually describe a power-dependency - * relationship. It may be used to specify a transversal relationship - * (where the power supplier is not the physical (or electrical) - * ancestor of a specific device. - * The effect of this is that the supplier will not be powered down - * before the power dependent. - */ - -void device_pm_set_parent(struct device * dev, struct device * parent) -{ - put_device(dev->power.pm_parent); - dev->power.pm_parent = get_device(parent); -} -EXPORT_SYMBOL_GPL(device_pm_set_parent); - -int device_pm_add(struct device * dev) +int device_pm_add(struct device *dev) { int error; @@ -63,21 +42,20 @@ int device_pm_add(struct device * dev) kobject_name(&dev->kobj)); mutex_lock(&dpm_list_mtx); list_add_tail(&dev->power.entry, &dpm_active); - device_pm_set_parent(dev, dev->parent); - if ((error = dpm_sysfs_add(dev))) + error = dpm_sysfs_add(dev); + if (error) list_del(&dev->power.entry); mutex_unlock(&dpm_list_mtx); return error; } -void device_pm_remove(struct device * dev) +void device_pm_remove(struct device *dev) { pr_debug("PM: Removing info for %s:%s\n", dev->bus ? dev->bus->name : "No Bus", kobject_name(&dev->kobj)); mutex_lock(&dpm_list_mtx); dpm_sysfs_remove(dev); - put_device(dev->power.pm_parent); list_del_init(&dev->power.entry); mutex_unlock(&dpm_list_mtx); } |