UART_TX_READY      47 drivers/tty/serial/amba-pl010.c #define UART_TX_READY(s)	(((s) & UART01x_FR_TXFF) == 0)
UART_TX_READY      63 drivers/tty/serial/apbuart.h #define UART_TX_READY(s)	(((s) & UART_STATUS_THE) != 0)