1272 	if (p->ier & UART_IER_THRI) {  in __stop_tx()
1273 		p->ier &= ~UART_IER_THRI;  in __stop_tx()
1274 		serial_out(p, UART_IER, p->ier);  in __stop_tx()
1301 	} else if (!(up->ier & UART_IER_THRI)) {  in serial8250_start_tx()
1302 		up->ier |= UART_IER_THRI;  in serial8250_start_tx()
1303 		serial_port_out(port, UART_IER, up->ier);  in serial8250_start_tx()
1328 	up->ier &= ~UART_IER_RLSI;  in serial8250_stop_rx()
1330 	serial_port_out(port, UART_IER, up->ier);  in serial8250_stop_rx()
1342 	up->ier |= UART_IER_MSI;  in serial8250_enable_ms()
1343 	serial_port_out(port, UART_IER, up->ier);  in serial8250_enable_ms()
1477 	if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI &&  in serial8250_modem_status()
1738 	unsigned int iir, ier = 0, lsr;  in serial8250_backup_timeout()  local
1748 		ier = serial_in(up, UART_IER);  in serial8250_backup_timeout()
1762 	if ((iir & UART_IIR_NO_INT) && (up->ier & UART_IER_THRI) &&  in serial8250_backup_timeout()
1773 		serial_out(up, UART_IER, ier);  in serial8250_backup_timeout()
1909 	unsigned int ier;  in serial8250_put_poll_char()  local
1916 	ier = serial_port_in(port, UART_IER);  in serial8250_put_poll_char()
1938 	serial_port_out(port, UART_IER, ier);  in serial8250_put_poll_char()
2180 	up->ier = UART_IER_RLSI | UART_IER_RDI;  in serial8250_startup()
2181 	serial_port_out(port, UART_IER, up->ier);  in serial8250_startup()
2205 	up->ier = 0;  in serial8250_shutdown()
2387 	up->ier &= ~UART_IER_MSI;  in serial8250_do_set_termios()
2390 		up->ier |= UART_IER_MSI;  in serial8250_do_set_termios()
2392 		up->ier |= UART_IER_UUE;  in serial8250_do_set_termios()
2394 		up->ier |= UART_IER_RTOIE;  in serial8250_do_set_termios()
2396 	serial_port_out(port, UART_IER, up->ier);  in serial8250_do_set_termios()
2858 	unsigned int ier;  in serial8250_console_write()  local
2875 	ier = serial_port_in(port, UART_IER);  in serial8250_console_write()
2889 	serial_port_out(port, UART_IER, ier);  in serial8250_console_write()