diff options
Diffstat (limited to 'drivers/base/power/runtime.c')
| -rw-r--r-- | drivers/base/power/runtime.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index c6030f100c08..beb85c31f3fa 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -1563,16 +1563,37 @@ void pm_runtime_clean_up_links(struct device *dev) } /** - * pm_runtime_resume_suppliers - Resume supplier devices. + * pm_runtime_get_suppliers - Resume and reference-count supplier devices. * @dev: Consumer device. */ -void pm_runtime_resume_suppliers(struct device *dev) +void pm_runtime_get_suppliers(struct device *dev) { + struct device_link *link; int idx; idx = device_links_read_lock(); - rpm_get_suppliers(dev); + list_for_each_entry_rcu(link, &dev->links.suppliers, c_node) + if (link->flags & DL_FLAG_PM_RUNTIME) + pm_runtime_get_sync(link->supplier); + + device_links_read_unlock(idx); +} + +/** + * pm_runtime_put_suppliers - Drop references to supplier devices. + * @dev: Consumer device. + */ +void pm_runtime_put_suppliers(struct device *dev) +{ + struct device_link *link; + int idx; + + idx = device_links_read_lock(); + + list_for_each_entry_rcu(link, &dev->links.suppliers, c_node) + if (link->flags & DL_FLAG_PM_RUNTIME) + pm_runtime_put(link->supplier); device_links_read_unlock(idx); } |