M_DUART_IMR_TX 301 drivers/tty/serial/sb1250-duart.c mask |= M_DUART_IMR_TX; M_DUART_IMR_TX 418 drivers/tty/serial/sb1250-duart.c mask &= ~M_DUART_IMR_TX; M_DUART_IMR_TX 849 drivers/tty/serial/sb1250-duart.c mask & ~M_DUART_IMR_TX);