diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 116b5a75f1af3218bb8cd3ed799e9447763db55f..f0f35e782bc3e28dad618583da189d94d93c426c 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -2613,7 +2613,9 @@ serial8250_set_ldisc(struct uart_port *port, struct ktermios *termios) { if (termios->c_line == N_PPS) { port->flags |= UPF_HARDPPS_CD; + spin_lock_irq(&port->lock); serial8250_enable_ms(port); + spin_unlock_irq(&port->lock); } else port->flags &= ~UPF_HARDPPS_CD; } diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index 230bc7a290d5962b25fa23c3471935d0aef6de27..194108b0de84249490390f955692c7e05b81842f 100644 --- a/drivers/tty/serial/amba-pl010.c +++ b/drivers/tty/serial/amba-pl010.c @@ -483,7 +483,9 @@ static void pl010_set_ldisc(struct uart_port *port, struct ktermios *termios) { if (termios->c_line == N_PPS) { port->flags |= UPF_HARDPPS_CD; + spin_lock_irq(&port->lock); pl010_enable_ms(port); + spin_unlock_irq(&port->lock); } else port->flags &= ~UPF_HARDPPS_CD; } diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 6a1d960e2e82a45cc29a8ef896ec779eeac6650c..e67cb38312800ed9e2b8d0f67bcd8a0f85da186c 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -2060,7 +2060,9 @@ static void atmel_set_ldisc(struct uart_port *port, struct ktermios *termios) { if (termios->c_line == N_PPS) { port->flags |= UPF_HARDPPS_CD; + spin_lock_irq(&port->lock); atmel_enable_ms(port); + spin_unlock_irq(&port->lock); } else { port->flags &= ~UPF_HARDPPS_CD; }