SPRD_IEN_TX_EMPTY 536 drivers/tty/serial/sprd_serial.c iclr |= SPRD_IEN_TX_EMPTY; SPRD_IEN_TX_EMPTY 537 drivers/tty/serial/sprd_serial.c ien &= ~SPRD_IEN_TX_EMPTY; SPRD_IEN_TX_EMPTY 555 drivers/tty/serial/sprd_serial.c if (!(ien & SPRD_IEN_TX_EMPTY)) { SPRD_IEN_TX_EMPTY 556 drivers/tty/serial/sprd_serial.c ien |= SPRD_IEN_TX_EMPTY;