26  * @master: drm_master somewhere within tree of lessees and lessors
32 struct drm_master *drm_lease_owner(struct drm_master *master)  in drm_lease_owner()  argument
34 	while (master->lessor != NULL)  in drm_lease_owner()
35 		master = master->lessor;  in drm_lease_owner()
36 	return master;  in drm_lease_owner()
41  * @master: drm_master of lessor
50 _drm_find_lessee(struct drm_master *master, int lessee_id)  in _drm_find_lessee()  argument
52 	lockdep_assert_held(&master->dev->mode_config.idr_mutex);  in _drm_find_lessee()
53 	return idr_find(&drm_lease_owner(master)->lessee_idr, lessee_id);  in _drm_find_lessee()
57 …* _drm_lease_held_master - check to see if an object is leased (or owned) by master (idr_mutex hel…
58  * @master: the master to check the lease status of
61  * Checks if the specified master holds a lease on the object. Return
64  *	true		'master' holds a lease on (or owns) the object
65  *	false		'master' does not hold a lease.
67 static int _drm_lease_held_master(struct drm_master *master, int id)  in _drm_lease_held_master()  argument
69 	lockdep_assert_held(&master->dev->mode_config.idr_mutex);  in _drm_lease_held_master()
70 	if (master->lessor)  in _drm_lease_held_master()
71 		return idr_find(&master->leases, id) != NULL;  in _drm_lease_held_master()
77  * @master: the master to check the lease status of
80  * Checks if any lessee of 'master' holds a lease on 'id'. Return
86 static bool _drm_has_leased(struct drm_master *master, int id)  in _drm_has_leased()  argument
90 	lockdep_assert_held(&master->dev->mode_config.idr_mutex);  in _drm_has_leased()
91 	drm_for_each_lessee(lessee, master)  in _drm_has_leased()
99  * @file_priv: the master drm_file
102  * Checks if the specified master holds a lease on the object. Return
105  *	true		'master' holds a lease on (or owns) the object
106  *	false		'master' does not hold a lease.
111 	struct drm_master *master;  in _drm_lease_held()  local
116 	master = drm_file_get_master(file_priv);  in _drm_lease_held()
117 	if (!master)  in _drm_lease_held()
119 	ret = _drm_lease_held_master(master, id);  in _drm_lease_held()
120 	drm_master_put(&master);  in _drm_lease_held()
127  * @file_priv: the master drm_file
130  * Checks if the specified master holds a lease on the object. Return
133  *	true		'master' holds a lease on (or owns) the object
134  *	false		'master' does not hold a lease.
138 	struct drm_master *master;  in drm_lease_held()  local
144 	master = drm_file_get_master(file_priv);  in drm_lease_held()
145 	if (!master)  in drm_lease_held()
147 	if (!master->lessor) {  in drm_lease_held()
151 	mutex_lock(&master->dev->mode_config.idr_mutex);  in drm_lease_held()
152 	ret = _drm_lease_held_master(master, id);  in drm_lease_held()
153 	mutex_unlock(&master->dev->mode_config.idr_mutex);  in drm_lease_held()
156 	drm_master_put(&master);  in drm_lease_held()
170 	struct drm_master *master;  in drm_lease_filter_crtcs()  local
179 	master = drm_file_get_master(file_priv);  in drm_lease_filter_crtcs()
180 	if (!master)  in drm_lease_filter_crtcs()
182 	if (!master->lessor) {  in drm_lease_filter_crtcs()
186 	dev = master->dev;  in drm_lease_filter_crtcs()
189 	mutex_lock(&master->dev->mode_config.idr_mutex);  in drm_lease_filter_crtcs()
191 		if (_drm_lease_held_master(master, crtc->base.id)) {  in drm_lease_filter_crtcs()
203 	mutex_unlock(&master->dev->mode_config.idr_mutex);  in drm_lease_filter_crtcs()
206 	drm_master_put(&master);  in drm_lease_filter_crtcs()
219  * 	ERR_PTR(-EACCES)	some other master holds the title to any object
284  * drm_lease_destroy - a master is going away (idr_mutex not held)
285  * @master: the drm_master being destroyed
289  * lessor for this master so that it can check
292 void drm_lease_destroy(struct drm_master *master)  in drm_lease_destroy()  argument
294 	struct drm_device *dev = master->dev;  in drm_lease_destroy()
298 	DRM_DEBUG_LEASE("drm_lease_destroy %d\n", master->lessee_id);  in drm_lease_destroy()
300 	/* This master is referenced by all lessees, hence it cannot be destroyed  in drm_lease_destroy()
303 	WARN_ON(!list_empty(&master->lessees));  in drm_lease_destroy()
305 	/* Remove this master from the lessee idr in the owner */  in drm_lease_destroy()
306 	if (master->lessee_id != 0) {  in drm_lease_destroy()
307 		DRM_DEBUG_LEASE("remove master %d from device list of lessees\n", master->lessee_id);  in drm_lease_destroy()
308 		idr_remove(&(drm_lease_owner(master)->lessee_idr), master->lessee_id);  in drm_lease_destroy()
311 	/* Remove this master from any lessee list it may be on */  in drm_lease_destroy()
312 	list_del(&master->lessee_list);  in drm_lease_destroy()
316 	if (master->lessor) {  in drm_lease_destroy()
317 		/* Tell the master to check the lessee list */  in drm_lease_destroy()
319 		drm_master_put(&master->lessor);  in drm_lease_destroy()
322 	DRM_DEBUG_LEASE("drm_lease_destroy done %d\n", master->lessee_id);  in drm_lease_destroy()
327  * @top: the master losing its lease
333 	struct drm_master *master = top;  in _drm_lease_revoke()  local
342 		DRM_DEBUG_LEASE("revoke leases for %p %d\n", master, master->lessee_id);  in _drm_lease_revoke()
345 		idr_for_each_entry(&master->leases, entry, object)  in _drm_lease_revoke()
346 			idr_remove(&master->leases, object);  in _drm_lease_revoke()
351 		if (!list_empty(&master->lessees)) {  in _drm_lease_revoke()
352 			master = list_first_entry(&master->lessees, struct drm_master, lessee_list);  in _drm_lease_revoke()
355 …while (master != top && master == list_last_entry(&master->lessor->lessees, struct drm_master, les…  in _drm_lease_revoke()
356 				master = master->lessor;  in _drm_lease_revoke()
358 			if (master == top)  in _drm_lease_revoke()
362 			master = list_next_entry(master, lessee_list);  in _drm_lease_revoke()
369  * @top: the master losing its lease
508  * The master associated with the specified file will have a lease
599 	/* Change the file to a master one */  in drm_mode_create_lease_ioctl()
600 	drm_master_put(&lessee_priv->master);  in drm_mode_create_lease_ioctl()
601 	lessee_priv->master = lessee;  in drm_mode_create_lease_ioctl()
635  * Starting from the master associated with the specified file,
636  * the master with the provided lessee_id is found, and then
637  * an array of lessee ids associated with leases from that master