231 	struct mutex		open_lock;  member
1541 	mutex_lock(&dev->open_lock);  in s2255_open()
1598 		mutex_unlock(&dev->open_lock);  in s2255_open()
1608 		mutex_unlock(&dev->open_lock);  in s2255_open()
1649 	mutex_unlock(&dev->open_lock);  in s2255_open()
1684 	mutex_lock(&dev->open_lock);  in s2255_destroy()
1711 	mutex_unlock(&dev->open_lock);  in s2255_destroy()
1722 	mutex_lock(&dev->open_lock);  in s2255_close()
1735 	mutex_unlock(&dev->open_lock);  in s2255_close()
2465 	mutex_init(&dev->open_lock);  in s2255_probe()
2574 	mutex_lock(&dev->open_lock);  in s2255_disconnect()
2576 	mutex_unlock(&dev->open_lock);  in s2255_disconnect()