rp2_minor_lock 211 drivers/tty/serial/rp2.c static DEFINE_SPINLOCK(rp2_minor_lock); rp2_minor_lock 218 drivers/tty/serial/rp2.c spin_lock(&rp2_minor_lock); rp2_minor_lock 224 drivers/tty/serial/rp2.c spin_unlock(&rp2_minor_lock);