30  * @master: drm_master somewhere within tree of lessees and lessors
36 struct drm_master *drm_lease_owner(struct drm_master *master)  in drm_lease_owner()  argument
38 	while (master->lessor != NULL)  in drm_lease_owner()
39 		master = master->lessor;  in drm_lease_owner()
40 	return master;  in drm_lease_owner()
46  * @master: drm_master of lessor
55 _drm_find_lessee(struct drm_master *master, int lessee_id)  in _drm_find_lessee()  argument
57 	lockdep_assert_held(&master->dev->mode_config.idr_mutex);  in _drm_find_lessee()
58 	return idr_find(&drm_lease_owner(master)->lessee_idr, lessee_id);  in _drm_find_lessee()
62 …* _drm_lease_held_master - check to see if an object is leased (or owned) by master (idr_mutex hel…
63  * @master: the master to check the lease status of
66  * Checks if the specified master holds a lease on the object. Return
69  *	true		'master' holds a lease on (or owns) the object
70  *	false		'master' does not hold a lease.
72 static int _drm_lease_held_master(struct drm_master *master, int id)  in _drm_lease_held_master()  argument
74 	lockdep_assert_held(&master->dev->mode_config.idr_mutex);  in _drm_lease_held_master()
75 	if (master->lessor)  in _drm_lease_held_master()
76 		return idr_find(&master->leases, id) != NULL;  in _drm_lease_held_master()
82  * @master: the master to check the lease status of
85  * Checks if any lessee of 'master' holds a lease on 'id'. Return
91 static bool _drm_has_leased(struct drm_master *master, int id)  in _drm_has_leased()  argument
95 	lockdep_assert_held(&master->dev->mode_config.idr_mutex);  in _drm_has_leased()
96 	drm_for_each_lessee(lessee, master)  in _drm_has_leased()
104  * @file_priv: the master drm_file
107  * Checks if the specified master holds a lease on the object. Return
110  *	true		'master' holds a lease on (or owns) the object
111  *	false		'master' does not hold a lease.
115 	if (file_priv == NULL || file_priv->master == NULL)  in _drm_lease_held()
118 	return _drm_lease_held_master(file_priv->master, id);  in _drm_lease_held()
124  * @file_priv: the master drm_file
127  * Checks if the specified master holds a lease on the object. Return
130  *	true		'master' holds a lease on (or owns) the object
131  *	false		'master' does not hold a lease.
135 	struct drm_master *master;  in drm_lease_held()  local
138 	if (file_priv == NULL || file_priv->master == NULL)  in drm_lease_held()
141 	master = file_priv->master;  in drm_lease_held()
142 	mutex_lock(&master->dev->mode_config.idr_mutex);  in drm_lease_held()
143 	ret = _drm_lease_held_master(master, id);  in drm_lease_held()
144 	mutex_unlock(&master->dev->mode_config.idr_mutex);  in drm_lease_held()
159 	struct drm_master *master;  in drm_lease_filter_crtcs()  local
165 	if (file_priv == NULL || file_priv->master == NULL)  in drm_lease_filter_crtcs()
168 	master = file_priv->master;  in drm_lease_filter_crtcs()
169 	dev = master->dev;  in drm_lease_filter_crtcs()
172 	mutex_lock(&master->dev->mode_config.idr_mutex);  in drm_lease_filter_crtcs()
174 		if (_drm_lease_held_master(master, crtc->base.id)) {  in drm_lease_filter_crtcs()
184 	mutex_unlock(&master->dev->mode_config.idr_mutex);  in drm_lease_filter_crtcs()
198  * 	ERR_PTR(-EACCESS)	some other master holds the title to any object
265  * drm_lease_destroy - a master is going away (idr_mutex not held)
266  * @master: the drm_master being destroyed
270  * lessor for this master so that it can check
273 void drm_lease_destroy(struct drm_master *master)  in drm_lease_destroy()  argument
275 	struct drm_device *dev = master->dev;  in drm_lease_destroy()
279 	DRM_DEBUG_LEASE("drm_lease_destroy %d\n", master->lessee_id);  in drm_lease_destroy()
281 	/* This master is referenced by all lessees, hence it cannot be destroyed  in drm_lease_destroy()
284 	WARN_ON(!list_empty(&master->lessees));  in drm_lease_destroy()
286 	/* Remove this master from the lessee idr in the owner */  in drm_lease_destroy()
287 	if (master->lessee_id != 0) {  in drm_lease_destroy()
288 		DRM_DEBUG_LEASE("remove master %d from device list of lessees\n", master->lessee_id);  in drm_lease_destroy()
289 		idr_remove(&(drm_lease_owner(master)->lessee_idr), master->lessee_id);  in drm_lease_destroy()
292 	/* Remove this master from any lessee list it may be on */  in drm_lease_destroy()
293 	list_del(&master->lessee_list);  in drm_lease_destroy()
297 	if (master->lessor) {  in drm_lease_destroy()
298 		/* Tell the master to check the lessee list */  in drm_lease_destroy()
300 		drm_master_put(&master->lessor);  in drm_lease_destroy()
303 	DRM_DEBUG_LEASE("drm_lease_destroy done %d\n", master->lessee_id);  in drm_lease_destroy()
308  * @top: the master losing its lease
314 	struct drm_master *master = top;  in _drm_lease_revoke()  local
323 		DRM_DEBUG_LEASE("revoke leases for %p %d\n", master, master->lessee_id);  in _drm_lease_revoke()
326 		idr_for_each_entry(&master->leases, entry, object)  in _drm_lease_revoke()
327 			idr_remove(&master->leases, object);  in _drm_lease_revoke()
332 		if (!list_empty(&master->lessees)) {  in _drm_lease_revoke()
333 			master = list_first_entry(&master->lessees, struct drm_master, lessee_list);  in _drm_lease_revoke()
336 …while (master != top && master == list_last_entry(&master->lessor->lessees, struct drm_master, les…  in _drm_lease_revoke()
337 				master = master->lessor;  in _drm_lease_revoke()
339 			if (master == top)  in _drm_lease_revoke()
343 			master = list_next_entry(master, lessee_list);  in _drm_lease_revoke()
350  * @top: the master losing its lease
487  * The master associated with the specified file will have a lease
499 	struct drm_master *lessor = lessor_priv->master;  in drm_mode_create_lease_ioctl()
566 	/* Change the file to a master one */  in drm_mode_create_lease_ioctl()
567 	drm_master_put(&lessee_priv->master);  in drm_mode_create_lease_ioctl()
568 	lessee_priv->master = lessee;  in drm_mode_create_lease_ioctl()
599  * Starting from the master associated with the specified file,
600  * the master with the provided lessee_id is found, and then
601  * an array of lessee ids associated with leases from that master
611 	struct drm_master *lessor = lessor_priv->master, *lessee;  in drm_mode_list_lessees_ioctl()
664 	struct drm_master *lessee = lessee_priv->master;  in drm_mode_get_lease_ioctl()
723 	struct drm_master *lessor = lessor_priv->master;  in drm_mode_revoke_lease_ioctl()