LSR_RXRDY
return(inb(COMPORT + com_lsr) & LSR_RXRDY);
if (!(inb(com->line_status_port) & LSR_RXRDY))
if (!(line_status & LSR_RXRDY))
if ((inb(iobase + com_lsr) & LSR_RXRDY) == 0)
if (inb(iobase + com_lsr) & LSR_RXRDY)
while (!(inb(iobase + com_lsr) & LSR_RXRDY))
if ((sio_getreg(com, com_lsr) & LSR_RXRDY) == 0)