diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/base/core.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 75fd59360940..de775c7a4d7c 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -46,8 +46,6 @@ early_param("sysfs.deprecated", sysfs_deprecated_setup); /* Device links support. */ static LIST_HEAD(wait_for_suppliers); static DEFINE_MUTEX(wfs_lock); -static LIST_HEAD(deferred_sync); -static unsigned int supplier_sync_state_disabled; #ifdef CONFIG_SRCU static DEFINE_MUTEX(device_links_lock); @@ -653,62 +651,6 @@ int device_links_check_suppliers(struct device *dev) return ret; } -static void __device_links_supplier_sync_state(struct device *dev) -{ - struct device_link *link; - - if (dev->state_synced) - return; - - list_for_each_entry(link, &dev->links.consumers, s_node) { - if (!(link->flags & DL_FLAG_MANAGED)) - continue; - if (link->status != DL_STATE_ACTIVE) - return; - } - - if (dev->bus->sync_state) - dev->bus->sync_state(dev); - else if (dev->driver && dev->driver->sync_state) - dev->driver->sync_state(dev); - - dev->state_synced = true; -} - -void device_links_supplier_sync_state_pause(void) -{ - device_links_write_lock(); - supplier_sync_state_disabled++; - device_links_write_unlock(); -} - -void device_links_supplier_sync_state_resume(void) -{ - struct device *dev, *tmp; - - device_links_write_lock(); - if (!supplier_sync_state_disabled) { - WARN(true, "Unmatched sync_state pause/resume!"); - goto out; - } - supplier_sync_state_disabled--; - if (supplier_sync_state_disabled) - goto out; - - list_for_each_entry_safe(dev, tmp, &deferred_sync, links.defer_sync) { - __device_links_supplier_sync_state(dev); - list_del_init(&dev->links.defer_sync); - } -out: - device_links_write_unlock(); -} - -static void __device_links_supplier_defer_sync(struct device *sup) -{ - if (list_empty(&sup->links.defer_sync)) - list_add_tail(&sup->links.defer_sync, &deferred_sync); -} - /** * device_links_driver_bound - Update device links after probing its driver. * @dev: Device to update the links for. @@ -753,11 +695,6 @@ void device_links_driver_bound(struct device *dev) WARN_ON(link->status != DL_STATE_CONSUMER_PROBE); WRITE_ONCE(link->status, DL_STATE_ACTIVE); - - if (supplier_sync_state_disabled) - __device_links_supplier_defer_sync(link->supplier); - else - __device_links_supplier_sync_state(link->supplier); } dev->links.status = DL_DEV_DRIVER_BOUND; @@ -874,7 +811,6 @@ void device_links_driver_cleanup(struct device *dev) WRITE_ONCE(link->status, DL_STATE_DORMANT); } - list_del_init(&dev->links.defer_sync); __device_links_no_driver(dev); device_links_write_unlock(); @@ -1849,7 +1785,6 @@ void device_initialize(struct device *dev) INIT_LIST_HEAD(&dev->links.consumers); INIT_LIST_HEAD(&dev->links.suppliers); INIT_LIST_HEAD(&dev->links.needs_suppliers); - INIT_LIST_HEAD(&dev->links.defer_sync); dev->links.status = DL_DEV_NO_DRIVER; } EXPORT_SYMBOL_GPL(device_initialize); |