92 	struct drm_master *master;  in drm_master_create()  local
94 	master = kzalloc(sizeof(*master), GFP_KERNEL);  in drm_master_create()
95 	if (!master)  in drm_master_create()
98 	kref_init(&master->refcount);  in drm_master_create()
99 	spin_lock_init(&master->lock.spinlock);  in drm_master_create()
100 	init_waitqueue_head(&master->lock.lock_queue);  in drm_master_create()
101 	idr_init(&master->magic_map);  in drm_master_create()
102 	master->minor = minor;  in drm_master_create()
104 	return master;  in drm_master_create()
107 struct drm_master *drm_master_get(struct drm_master *master)  in drm_master_get()  argument
109 	kref_get(&master->refcount);  in drm_master_get()
110 	return master;  in drm_master_get()
116 	struct drm_master *master = container_of(kref, struct drm_master, refcount);  in drm_master_destroy()  local
117 	struct drm_device *dev = master->minor->dev;  in drm_master_destroy()
122 		dev->driver->master_destroy(dev, master);  in drm_master_destroy()
125 		if (r_list->master == master) {  in drm_master_destroy()
132 	idr_destroy(&master->magic_map);  in drm_master_destroy()
133 	kfree(master->unique);  in drm_master_destroy()
134 	kfree(master);  in drm_master_destroy()
137 void drm_master_put(struct drm_master **master)  in drm_master_put()  argument
139 	kref_put(&(*master)->refcount, drm_master_destroy);  in drm_master_put()
140 	*master = NULL;  in drm_master_put()
153 	if (file_priv->minor->master) {  in drm_setmaster_ioctl()
158 	if (!file_priv->master) {  in drm_setmaster_ioctl()
168 	file_priv->minor->master = drm_master_get(file_priv->master);  in drm_setmaster_ioctl()
174 			drm_master_put(&file_priv->minor->master);  in drm_setmaster_ioctl()
192 	if (!file_priv->minor->master)  in drm_dropmaster_ioctl()
198 	drm_master_put(&file_priv->minor->master);  in drm_dropmaster_ioctl()