diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_port.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index bdfa659b9..858a54633 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1414,12 +1414,8 @@ static void __do_stop_tx_rs485(struct uart_8250_port *p) if (!(p->port.rs485.flags & SER_RS485_RX_DURING_TX)) { serial8250_clear_fifos(p); - serial8250_rpm_get(p); - p->ier |= UART_IER_RLSI | UART_IER_RDI; serial_port_out(&p->port, UART_IER, p->ier); - - serial8250_rpm_put(p); } } @@ -1429,6 +1425,7 @@ static void serial8250_em485_handle_stop_tx(unsigned long arg) struct uart_8250_em485 *em485 = p->em485; unsigned long flags; + serial8250_rpm_get(p); spin_lock_irqsave(&p->port.lock, flags); if (em485 && em485->active_timer == &em485->stop_tx_timer) { @@ -1436,6 +1433,7 @@ static void serial8250_em485_handle_stop_tx(unsigned long arg) em485->active_timer = NULL; } spin_unlock_irqrestore(&p->port.lock, flags); + serial8250_rpm_put(p); } static void __stop_tx_rs485(struct uart_8250_port *p) @@ -1475,7 +1473,7 @@ static inline void __stop_tx(struct uart_8250_port *p) unsigned char lsr = serial_in(p, UART_LSR); /* * To provide required timeing and allow FIFO transfer, - * __stop_tx_rs485 must be called only when both FIFO and + * __stop_tx_rs485() must be called only when both FIFO and * shift register are empty. It is for device driver to enable * interrupt on TEMT. */ @@ -1484,9 +1482,10 @@ static inline void __stop_tx(struct uart_8250_port *p) del_timer(&em485->start_tx_timer); em485->active_timer = NULL; + + __stop_tx_rs485(p); } __do_stop_tx(p); - __stop_tx_rs485(p); } static void serial8250_stop_tx(struct uart_port *port) |