Merge tag 'tty-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here's the big tty/serial driver pull request for 4.6-rc1.

  Lots of changes in here, Peter has been on a tear again, with lots of
  refactoring and bugs fixes, many thanks to the great work he has been
  doing.  Lots of driver updates and fixes as well, full details in the
  shortlog.

  All have been in linux-next for a while with no reported issues"

* tag 'tty-4.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (220 commits)
  serial: 8250: describe CONFIG_SERIAL_8250_RSA
  serial: samsung: optimize UART rx fifo access routine
  serial: pl011: add mark/space parity support
  serial: sa1100: make sa1100_register_uart_fns a function
  tty: serial: 8250: add MOXA Smartio MUE boards support
  serial: 8250: convert drivers to use up_to_u8250p()
  serial: 8250/mediatek: fix building with SERIAL_8250=m
  serial: 8250/ingenic: fix building with SERIAL_8250=m
  serial: 8250/uniphier: fix modular build
  Revert "drivers/tty/serial: make 8250/8250_ingenic.c explicitly non-modular"
  Revert "drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular"
  serial: mvebu-uart: initial support for Armada-3700 serial port
  serial: mctrl_gpio: Add missing module license
  serial: ifx6x60: avoid uninitialized variable use
  tty/serial: at91: fix bad offset for UART timeout register
  tty/serial: at91: restore dynamic driver binding
  serial: 8250: Add hardware dependency to RT288X option
  TTY, devpts: document pty count limiting
  tty: goldfish: support platform_device with id -1
  drivers: tty: goldfish: Add device tree bindings
  ...

3 files changed, 10 insertions, 27 deletions

diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index a4237707f79d..da126ee6d218 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -287,14 +287,14 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
 
 	if (filp->f_flags & O_NONBLOCK) {
 		/* nonblock mode is set */
-		if (tty->termios.c_cflag & CBAUD)
+		if (C_BAUD(tty))
 			tty_port_raise_dtr_rts(port);
 		port->flags |= ASYNC_NORMAL_ACTIVE;
 		pr_debug("%s(), O_NONBLOCK requested!\n", __func__);
 		return 0;
 	}
 
-	if (tty->termios.c_cflag & CLOCAL) {
+	if (C_CLOCAL(tty)) {
 		pr_debug("%s(), doing CLOCAL!\n", __func__);
 		do_clocal = 1;
 	}
@@ -806,7 +806,7 @@ static void ircomm_tty_throttle(struct tty_struct *tty)
 		ircomm_tty_send_xchar(tty, STOP_CHAR(tty));
 
 	/* Hardware flow control? */
-	if (tty->termios.c_cflag & CRTSCTS) {
+	if (C_CRTSCTS(tty)) {
 		self->settings.dte &= ~IRCOMM_RTS;
 		self->settings.dte |= IRCOMM_DELTA_RTS;
 
@@ -831,12 +831,11 @@ static void ircomm_tty_unthrottle(struct tty_struct *tty)
 	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
 	/* Using software flow control? */
-	if (I_IXOFF(tty)) {
+	if (I_IXOFF(tty))
 		ircomm_tty_send_xchar(tty, START_CHAR(tty));
-	}
 
 	/* Using hardware flow control? */
-	if (tty->termios.c_cflag & CRTSCTS) {
+	if (C_CRTSCTS(tty)) {
 		self->settings.dte |= (IRCOMM_RTS|IRCOMM_DELTA_RTS);
 
 		ircomm_param_request(self, IRCOMM_DTE, TRUE);
@@ -1268,10 +1267,6 @@ static void ircomm_tty_line_info(struct ircomm_tty_cb *self, struct seq_file *m)
 		seq_printf(m, "%cASYNC_LOW_LATENCY", sep);
 		sep = '|';
 	}
-	if (self->port.flags & ASYNC_CLOSING) {
-		seq_printf(m, "%cASYNC_CLOSING", sep);
-		sep = '|';
-	}
 	if (self->port.flags & ASYNC_NORMAL_ACTIVE) {
 		seq_printf(m, "%cASYNC_NORMAL_ACTIVE", sep);
 		sep = '|';
diff --git a/net/irda/ircomm/ircomm_tty_ioctl.c b/net/irda/ircomm/ircomm_tty_ioctl.c
index 75ccdbd0728e..d3687aaa23de 100644
--- a/net/irda/ircomm/ircomm_tty_ioctl.c
+++ b/net/irda/ircomm/ircomm_tty_ioctl.c
@@ -158,26 +158,21 @@ void ircomm_tty_set_termios(struct tty_struct *tty,
 	ircomm_tty_change_speed(self, tty);
 
 	/* Handle transition to B0 status */
-	if ((old_termios->c_cflag & CBAUD) &&
-	    !(cflag & CBAUD)) {
+	if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) {
 		self->settings.dte &= ~(IRCOMM_DTR|IRCOMM_RTS);
 		ircomm_param_request(self, IRCOMM_DTE, TRUE);
 	}
 
 	/* Handle transition away from B0 status */
-	if (!(old_termios->c_cflag & CBAUD) &&
-	    (cflag & CBAUD)) {
+	if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
 		self->settings.dte |= IRCOMM_DTR;
-		if (!(tty->termios.c_cflag & CRTSCTS) ||
-		    !test_bit(TTY_THROTTLED, &tty->flags)) {
+		if (!C_CRTSCTS(tty) || !test_bit(TTY_THROTTLED, &tty->flags))
 			self->settings.dte |= IRCOMM_RTS;
-		}
 		ircomm_param_request(self, IRCOMM_DTE, TRUE);
 	}
 
 	/* Handle turning off CRTSCTS */
-	if ((old_termios->c_cflag & CRTSCTS) &&
-	    !(tty->termios.c_cflag & CRTSCTS))
+	if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty))
 	{
 		tty->hw_stopped = 0;
 		ircomm_tty_start(tty);
diff --git a/net/nfc/nci/uart.c b/net/nfc/nci/uart.c
index 21d8875673a4..c468eabd6943 100644
--- a/net/nfc/nci/uart.c
+++ b/net/nfc/nci/uart.c
@@ -171,14 +171,7 @@ static int nci_uart_tty_open(struct tty_struct *tty)
 	tty->disc_data = NULL;
 	tty->receive_room = 65536;
 
-	/* Flush any pending characters in the driver and line discipline. */
-
-	/* FIXME: why is this needed. Note don't use ldisc_ref here as the
-	 * open path is before the ldisc is referencable.
-	 */
-
-	if (tty->ldisc->ops->flush_buffer)
-		tty->ldisc->ops->flush_buffer(tty);
+	/* Flush any pending characters in the driver */
 	tty_driver_flush_buffer(tty);
 
 	return 0;