[PATCH v4 00/12] tty/serial: bool conversions and cleanups

[PATCH v4 00/12] tty/serial: bool conversions and cleanups

[Ilpo Järvinen]

There are number of functions in tty/serial which have arguments or
return types that expect/behave like bool. Likely due to them existing
before bool was available, other types are used. Make conversions to
bool and cleanups.

v4:
- Removed most of the USB serial changes from this series

v3:
- moxa: Fix function signature in comment
- moxa: Rearrange comment (0: off, 1: on) removal from rename change
  to bool change (effect is internal to the series)

v2:
- Call dtr/rts parameters/variables consistently "active"
- Don't chain one return statement with ||
- Don't change function signatures to >80 chars ("while at it")
- moxa: differentiated dtr and status variables

Ilpo Järvinen (12):
  tty: Cleanup tty_port_set_initialized() bool parameter
  tty: Cleamup tty_port_set_suspended() bool parameter
  tty: Cleanup tty_port_set_active() bool parameter
  tty: moxa: Make local var storing tty_port_initialized() bool
  serial: Convert uart_{,port_}startup() init_hw param to bool
  tty: Convert ->carrier_raised() and callchains to bool
  tty: Convert ->dtr_rts() to take bool argument
  tty/serial: Make ->dcd_change()+uart_handle_dcd_change() status bool
    active
  serial: Make uart_handle_cts_change() status param bool active
  tty: Return bool from tty_termios_hw_change()
  tty: Call ->dtr_rts() parameter active consistently
  tty: moxa: Rename dtr/rts parameters/variables to active

 drivers/char/pcmcia/synclink_cs.c | 18 +++----
 drivers/ipack/devices/ipoctal.c   |  4 +-
 drivers/mmc/core/sdio_uart.c      | 13 +++--
 drivers/pps/clients/pps-ldisc.c   |  6 +--
 drivers/s390/char/con3215.c       |  4 +-
 drivers/staging/greybus/uart.c    |  4 +-
 drivers/tty/amiserial.c           | 12 ++---
 drivers/tty/hvc/hvc_console.c     |  4 +-
 drivers/tty/hvc/hvc_console.h     |  2 +-
 drivers/tty/hvc/hvc_iucv.c        |  6 +--
 drivers/tty/moxa.c                | 82 ++++++++++++++++---------------
 drivers/tty/mxser.c               | 11 +++--
 drivers/tty/n_gsm.c               | 16 +++---
 drivers/tty/serial/imx.c          |  2 +-
 drivers/tty/serial/max3100.c      |  2 +-
 drivers/tty/serial/max310x.c      |  3 +-
 drivers/tty/serial/serial_core.c  | 65 ++++++++++++------------
 drivers/tty/serial/sunhv.c        |  8 +--
 drivers/tty/synclink_gt.c         | 21 ++++----
 drivers/tty/tty_ioctl.c           |  8 +--
 drivers/tty/tty_port.c            | 22 ++++-----
 drivers/usb/class/cdc-acm.c       |  4 +-
 drivers/usb/serial/console.c      |  2 +-
 drivers/usb/serial/usb-serial.c   |  6 +--
 include/linux/serial_core.h       |  6 +--
 include/linux/tty.h               |  2 +-
 include/linux/tty_ldisc.h         |  4 +-
 include/linux/tty_port.h          | 10 ++--
 net/bluetooth/rfcomm/tty.c        |  2 +-
 29 files changed, 173 insertions(+), 176 deletions(-)

-- 
2.30.2

[PATCH v4 01/12] tty: Cleanup tty_port_set_initialized() bool parameter

[Ilpo Järvinen]

Make callers pass true/false consistently for bool val.

Reviewed-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/char/pcmcia/synclink_cs.c | 4 ++--
 drivers/ipack/devices/ipoctal.c   | 4 ++--
 drivers/s390/char/con3215.c       | 4 ++--
 drivers/tty/amiserial.c           | 4 ++--
 drivers/tty/moxa.c                | 2 +-
 drivers/tty/mxser.c               | 2 +-
 drivers/tty/n_gsm.c               | 4 ++--
 drivers/tty/serial/serial_core.c  | 6 +++---
 drivers/tty/synclink_gt.c         | 4 ++--
 drivers/tty/tty_port.c            | 4 ++--
 drivers/usb/serial/console.c      | 2 +-
 11 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index b2735be81ab2..baa46e8a094b 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -1309,7 +1309,7 @@ static int startup(MGSLPC_INFO * info, struct tty_struct *tty)
 	if (tty)
 		clear_bit(TTY_IO_ERROR, &tty->flags);
 
-	tty_port_set_initialized(&info->port, 1);
+	tty_port_set_initialized(&info->port, true);
 
 	return 0;
 }
@@ -1359,7 +1359,7 @@ static void shutdown(MGSLPC_INFO * info, struct tty_struct *tty)
 	if (tty)
 		set_bit(TTY_IO_ERROR, &tty->flags);
 
-	tty_port_set_initialized(&info->port, 0);
+	tty_port_set_initialized(&info->port, false);
 }
 
 static void mgslpc_program_hw(MGSLPC_INFO *info, struct tty_struct *tty)
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index fc00274070b6..103fce0c49e6 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -647,7 +647,7 @@ static void ipoctal_hangup(struct tty_struct *tty)
 	tty_port_hangup(&channel->tty_port);
 
 	ipoctal_reset_channel(channel);
-	tty_port_set_initialized(&channel->tty_port, 0);
+	tty_port_set_initialized(&channel->tty_port, false);
 	wake_up_interruptible(&channel->tty_port.open_wait);
 }
 
@@ -659,7 +659,7 @@ static void ipoctal_shutdown(struct tty_struct *tty)
 		return;
 
 	ipoctal_reset_channel(channel);
-	tty_port_set_initialized(&channel->tty_port, 0);
+	tty_port_set_initialized(&channel->tty_port, false);
 }
 
 static void ipoctal_cleanup(struct tty_struct *tty)
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 72ba83c1bc79..0b05cd76b7d0 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -629,7 +629,7 @@ static int raw3215_startup(struct raw3215_info *raw)
 	if (tty_port_initialized(&raw->port))
 		return 0;
 	raw->line_pos = 0;
-	tty_port_set_initialized(&raw->port, 1);
+	tty_port_set_initialized(&raw->port, true);
 	spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
 	raw3215_try_io(raw);
 	spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
@@ -659,7 +659,7 @@ static void raw3215_shutdown(struct raw3215_info *raw)
 		spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
 		remove_wait_queue(&raw->empty_wait, &wait);
 		set_current_state(TASK_RUNNING);
-		tty_port_set_initialized(&raw->port, 1);
+		tty_port_set_initialized(&raw->port, true);
 	}
 	spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
 }
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index f52266766df9..f8cdce1626cb 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -502,7 +502,7 @@ static int startup(struct tty_struct *tty, struct serial_state *info)
 	 */
 	change_speed(tty, info, NULL);
 
-	tty_port_set_initialized(port, 1);
+	tty_port_set_initialized(port, true);
 	local_irq_restore(flags);
 	return 0;
 
@@ -556,7 +556,7 @@ static void shutdown(struct tty_struct *tty, struct serial_state *info)
 
 	set_bit(TTY_IO_ERROR, &tty->flags);
 
-	tty_port_set_initialized(&info->tport, 0);
+	tty_port_set_initialized(&info->tport, false);
 	local_irq_restore(flags);
 }
 
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 35b6fddf0341..bc474f3c3f8f 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1484,7 +1484,7 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
 		MoxaPortLineCtrl(ch, 1, 1);
 		MoxaPortEnable(ch);
 		MoxaSetFifo(ch, ch->type == PORT_16550A);
-		tty_port_set_initialized(&ch->port, 1);
+		tty_port_set_initialized(&ch->port, true);
 	}
 	mutex_unlock(&ch->port.mutex);
 	mutex_unlock(&moxa_openlock);
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 2436e0b10f9a..2926a831727d 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -1063,7 +1063,7 @@ static int mxser_set_serial_info(struct tty_struct *tty,
 	} else {
 		retval = mxser_activate(port, tty);
 		if (retval == 0)
-			tty_port_set_initialized(port, 1);
+			tty_port_set_initialized(port, true);
 	}
 	mutex_unlock(&port->mutex);
 	return retval;
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index daf12132deb1..631539c17d85 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -2059,7 +2059,7 @@ static void gsm_dlci_close(struct gsm_dlci *dlci)
 		tty_port_tty_hangup(&dlci->port, false);
 		gsm_dlci_clear_queues(dlci->gsm, dlci);
 		/* Ensure that gsmtty_open() can return. */
-		tty_port_set_initialized(&dlci->port, 0);
+		tty_port_set_initialized(&dlci->port, false);
 		wake_up_interruptible(&dlci->port.open_wait);
 	} else
 		dlci->gsm->dead = true;
@@ -3880,7 +3880,7 @@ static int gsmtty_open(struct tty_struct *tty, struct file *filp)
 	dlci->modem_rx = 0;
 	/* We could in theory open and close before we wait - eg if we get
 	   a DM straight back. This is ok as that will have caused a hangup */
-	tty_port_set_initialized(port, 1);
+	tty_port_set_initialized(port, true);
 	/* Start sending off SABM messages */
 	if (gsm->initiator)
 		gsm_dlci_begin_open(dlci);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index b9fbbee598b8..e049c760b738 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -290,7 +290,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
 		set_bit(TTY_IO_ERROR, &tty->flags);
 
 	if (tty_port_initialized(port)) {
-		tty_port_set_initialized(port, 0);
+		tty_port_set_initialized(port, false);
 
 		/*
 		 * Turn off DTR and RTS early.
@@ -2347,7 +2347,7 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)
 		unsigned int mctrl;
 
 		tty_port_set_suspended(port, 1);
-		tty_port_set_initialized(port, 0);
+		tty_port_set_initialized(port, false);
 
 		spin_lock_irq(&uport->lock);
 		ops->stop_tx(uport);
@@ -2458,7 +2458,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)
 					uart_rs485_config(uport);
 				ops->start_tx(uport);
 				spin_unlock_irq(&uport->lock);
-				tty_port_set_initialized(port, 1);
+				tty_port_set_initialized(port, true);
 			} else {
 				/*
 				 * Failed to resume - maybe hardware went away?
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 72b76cdde534..2b96bf0ecafb 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -2354,7 +2354,7 @@ static int startup(struct slgt_info *info)
 	if (info->port.tty)
 		clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
 
-	tty_port_set_initialized(&info->port, 1);
+	tty_port_set_initialized(&info->port, true);
 
 	return 0;
 }
@@ -2401,7 +2401,7 @@ static void shutdown(struct slgt_info *info)
 	if (info->port.tty)
 		set_bit(TTY_IO_ERROR, &info->port.tty->flags);
 
-	tty_port_set_initialized(&info->port, 0);
+	tty_port_set_initialized(&info->port, false);
 }
 
 static void program_hw(struct slgt_info *info)
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index dce08a6d7b5e..0c00d5bd6c88 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -367,7 +367,7 @@ static void tty_port_shutdown(struct tty_port *port, struct tty_struct *tty)
 		goto out;
 
 	if (tty_port_initialized(port)) {
-		tty_port_set_initialized(port, 0);
+		tty_port_set_initialized(port, false);
 		/*
 		 * Drop DTR/RTS if HUPCL is set. This causes any attached
 		 * modem to hang up the line.
@@ -788,7 +788,7 @@ int tty_port_open(struct tty_port *port, struct tty_struct *tty,
 				return retval;
 			}
 		}
-		tty_port_set_initialized(port, 1);
+		tty_port_set_initialized(port, true);
 	}
 	mutex_unlock(&port->mutex);
 	return tty_port_block_til_ready(port, tty, filp);
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
index da19a5fa414f..c3ea3a46ed76 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -169,7 +169,7 @@ static int usb_console_setup(struct console *co, char *options)
 			tty_save_termios(tty);
 			tty_kref_put(tty);
 		}
-		tty_port_set_initialized(&port->port, 1);
+		tty_port_set_initialized(&port->port, true);
 	}
 	/* Now that any required fake tty operations are completed restore
 	 * the tty port count */
-- 
2.30.2

[PATCH v4 02/12] tty: Cleamup tty_port_set_suspended() bool parameter

[Ilpo Järvinen]

Make callers pass true/false consistently for bool val.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/serial/serial_core.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index e049c760b738..f9564b1e3dfb 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -312,7 +312,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
 	 * a DCD drop (hangup) at just the right time.  Clear suspended bit so
 	 * we don't try to resume a port that has been shutdown.
 	 */
-	tty_port_set_suspended(port, 0);
+	tty_port_set_suspended(port, false);
 
 	/*
 	 * Do not free() the transmit buffer page under the port lock since
@@ -1725,7 +1725,7 @@ static void uart_tty_port_shutdown(struct tty_port *port)
 	 * a DCD drop (hangup) at just the right time.  Clear suspended bit so
 	 * we don't try to resume a port that has been shutdown.
 	 */
-	tty_port_set_suspended(port, 0);
+	tty_port_set_suspended(port, false);
 
 	/*
 	 * Free the transmit buffer.
@@ -2346,7 +2346,7 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)
 		int tries;
 		unsigned int mctrl;
 
-		tty_port_set_suspended(port, 1);
+		tty_port_set_suspended(port, true);
 		tty_port_set_initialized(port, false);
 
 		spin_lock_irq(&uport->lock);
@@ -2469,7 +2469,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)
 			}
 		}
 
-		tty_port_set_suspended(port, 0);
+		tty_port_set_suspended(port, false);
 	}
 
 	mutex_unlock(&port->mutex);
-- 
2.30.2

[PATCH v4 03/12] tty: Cleanup tty_port_set_active() bool parameter

[Ilpo Järvinen]

Make callers pass true/false consistently for bool val.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/amiserial.c          |  2 +-
 drivers/tty/serial/serial_core.c |  4 ++--
 drivers/tty/synclink_gt.c        |  6 +++---
 drivers/tty/tty_port.c           | 10 +++++-----
 4 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index f8cdce1626cb..460d33a1e70b 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1329,7 +1329,7 @@ static void rs_hangup(struct tty_struct *tty)
 	rs_flush_buffer(tty);
 	shutdown(tty, info);
 	info->tport.count = 0;
-	tty_port_set_active(&info->tport, 0);
+	tty_port_set_active(&info->tport, false);
 	info->tport.tty = NULL;
 	wake_up_interruptible(&info->tport.open_wait);
 }
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f9564b1e3dfb..c881fefa3d97 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1827,7 +1827,7 @@ static void uart_hangup(struct tty_struct *tty)
 		spin_lock_irqsave(&port->lock, flags);
 		port->count = 0;
 		spin_unlock_irqrestore(&port->lock, flags);
-		tty_port_set_active(port, 0);
+		tty_port_set_active(port, false);
 		tty_port_tty_set(port, NULL);
 		if (uport && !uart_console(uport))
 			uart_change_pm(state, UART_PM_STATE_OFF);
@@ -1945,7 +1945,7 @@ static int uart_port_activate(struct tty_port *port, struct tty_struct *tty)
 	 */
 	ret = uart_startup(tty, state, 0);
 	if (ret > 0)
-		tty_port_set_active(port, 1);
+		tty_port_set_active(port, true);
 
 	return ret;
 }
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 2b96bf0ecafb..81c94906f06e 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -694,7 +694,7 @@ static void hangup(struct tty_struct *tty)
 	info->port.count = 0;
 	info->port.tty = NULL;
 	spin_unlock_irqrestore(&info->port.lock, flags);
-	tty_port_set_active(&info->port, 0);
+	tty_port_set_active(&info->port, false);
 	mutex_unlock(&info->port.mutex);
 
 	wake_up_interruptible(&info->port.open_wait);
@@ -3169,7 +3169,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 
 	if (filp->f_flags & O_NONBLOCK || tty_io_error(tty)) {
 		/* nonblock mode is set or port is not enabled */
-		tty_port_set_active(port, 1);
+		tty_port_set_active(port, true);
 		return 0;
 	}
 
@@ -3226,7 +3226,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 	port->blocked_open--;
 
 	if (!retval)
-		tty_port_set_active(port, 1);
+		tty_port_set_active(port, true);
 
 	DBGINFO(("%s block_til_ready ready, rc=%d\n", tty->driver->name, retval));
 	return retval;
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 0c00d5bd6c88..469de3c010b8 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -403,7 +403,7 @@ void tty_port_hangup(struct tty_port *port)
 		set_bit(TTY_IO_ERROR, &tty->flags);
 	port->tty = NULL;
 	spin_unlock_irqrestore(&port->lock, flags);
-	tty_port_set_active(port, 0);
+	tty_port_set_active(port, false);
 	tty_port_shutdown(port, tty);
 	tty_kref_put(tty);
 	wake_up_interruptible(&port->open_wait);
@@ -518,14 +518,14 @@ int tty_port_block_til_ready(struct tty_port *port,
 	 * the port has just hung up or is in another error state.
 	 */
 	if (tty_io_error(tty)) {
-		tty_port_set_active(port, 1);
+		tty_port_set_active(port, true);
 		return 0;
 	}
 	if (filp == NULL || (filp->f_flags & O_NONBLOCK)) {
 		/* Indicate we are open */
 		if (C_BAUD(tty))
 			tty_port_raise_dtr_rts(port);
-		tty_port_set_active(port, 1);
+		tty_port_set_active(port, true);
 		return 0;
 	}
 
@@ -588,7 +588,7 @@ int tty_port_block_til_ready(struct tty_port *port,
 	port->blocked_open--;
 	spin_unlock_irqrestore(&port->lock, flags);
 	if (retval == 0)
-		tty_port_set_active(port, 1);
+		tty_port_set_active(port, true);
 	return retval;
 }
 EXPORT_SYMBOL(tty_port_block_til_ready);
@@ -695,7 +695,7 @@ void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)
 		wake_up_interruptible(&port->open_wait);
 	}
 	spin_unlock_irqrestore(&port->lock, flags);
-	tty_port_set_active(port, 0);
+	tty_port_set_active(port, false);
 }
 EXPORT_SYMBOL(tty_port_close_end);
 
-- 
2.30.2

[PATCH v4 04/12] tty: moxa: Make local var storing tty_port_initialized() bool

[Ilpo Järvinen]

Return type of tty_port_initialized() is bool, use matching type for
the local variable.

Also reorder the local vars to reverse-xmas-tree while at it.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/moxa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index bc474f3c3f8f..2d9635e14ded 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1664,8 +1664,8 @@ static int moxa_poll_port(struct moxa_port *p, unsigned int handle,
 		u16 __iomem *ip)
 {
 	struct tty_struct *tty = tty_port_tty_get(&p->port);
+	bool inited = tty_port_initialized(&p->port);
 	void __iomem *ofsAddr;
-	unsigned int inited = tty_port_initialized(&p->port);
 	u16 intr;
 
 	if (tty) {
-- 
2.30.2

[PATCH v4 05/12] serial: Convert uart_{,port_}startup() init_hw param to bool

[Ilpo Järvinen]

Convert init_hw parameter in uart_startup() and uart_port_startup() to
bool as code treats them like bool.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/serial/serial_core.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index c881fefa3d97..f7074ac02801 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -182,7 +182,7 @@ static void uart_port_dtr_rts(struct uart_port *uport, int raise)
  * will be serialised by the per-port mutex.
  */
 static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
-		int init_hw)
+			     bool init_hw)
 {
 	struct uart_port *uport = uart_port_check(state);
 	unsigned long flags;
@@ -254,7 +254,7 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
 }
 
 static int uart_startup(struct tty_struct *tty, struct uart_state *state,
-		int init_hw)
+			bool init_hw)
 {
 	struct tty_port *port = &state->port;
 	int retval;
@@ -997,7 +997,7 @@ static int uart_set_info(struct tty_struct *tty, struct tty_port *port,
 			uart_change_speed(tty, state, NULL);
 		}
 	} else {
-		retval = uart_startup(tty, state, 1);
+		retval = uart_startup(tty, state, true);
 		if (retval == 0)
 			tty_port_set_initialized(port, true);
 		if (retval > 0)
@@ -1165,7 +1165,7 @@ static int uart_do_autoconfig(struct tty_struct *tty, struct uart_state *state)
 		 */
 		uport->ops->config_port(uport, flags);
 
-		ret = uart_startup(tty, state, 1);
+		ret = uart_startup(tty, state, true);
 		if (ret == 0)
 			tty_port_set_initialized(port, true);
 		if (ret > 0)
@@ -1943,7 +1943,7 @@ static int uart_port_activate(struct tty_port *port, struct tty_struct *tty)
 	/*
 	 * Start up the serial port.
 	 */
-	ret = uart_startup(tty, state, 0);
+	ret = uart_startup(tty, state, false);
 	if (ret > 0)
 		tty_port_set_active(port, true);
 
-- 
2.30.2

[PATCH v4 06/12] tty: Convert ->carrier_raised() and callchains to bool

[Ilpo Järvinen]

Return boolean from ->carrier_raised() instead of 0 and 1. Make the
return type change also to tty_port_carrier_raised() that makes the
->carrier_raised() call (+ cd variable in moxa into which its return
value is stored).

Also cleans up a few unnecessary constructs related to this change:

	return xx ? 1 : 0;
	-> return xx;

	if (xx)
		return 1;
	return 0;
	-> return xx;

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/char/pcmcia/synclink_cs.c | 8 +++-----
 drivers/mmc/core/sdio_uart.c      | 7 +++----
 drivers/tty/amiserial.c           | 2 +-
 drivers/tty/moxa.c                | 4 ++--
 drivers/tty/mxser.c               | 5 +++--
 drivers/tty/n_gsm.c               | 8 ++++----
 drivers/tty/serial/serial_core.c  | 9 ++++-----
 drivers/tty/synclink_gt.c         | 7 ++++---
 drivers/tty/tty_port.c            | 4 ++--
 drivers/usb/serial/usb-serial.c   | 4 ++--
 include/linux/tty_port.h          | 6 +++---
 net/bluetooth/rfcomm/tty.c        | 2 +-
 12 files changed, 32 insertions(+), 34 deletions(-)

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index baa46e8a094b..4391138e1b8a 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -377,7 +377,7 @@ static void async_mode(MGSLPC_INFO *info);
 
 static void tx_timeout(struct timer_list *t);
 
-static int carrier_raised(struct tty_port *port);
+static bool carrier_raised(struct tty_port *port);
 static void dtr_rts(struct tty_port *port, int onoff);
 
 #if SYNCLINK_GENERIC_HDLC
@@ -2430,7 +2430,7 @@ static void mgslpc_hangup(struct tty_struct *tty)
 	tty_port_hangup(&info->port);
 }
 
-static int carrier_raised(struct tty_port *port)
+static bool carrier_raised(struct tty_port *port)
 {
 	MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
 	unsigned long flags;
@@ -2439,9 +2439,7 @@ static int carrier_raised(struct tty_port *port)
 	get_signals(info);
 	spin_unlock_irqrestore(&info->lock, flags);
 
-	if (info->serial_signals & SerialSignal_DCD)
-		return 1;
-	return 0;
+	return info->serial_signals & SerialSignal_DCD;
 }
 
 static void dtr_rts(struct tty_port *port, int onoff)
diff --git a/drivers/mmc/core/sdio_uart.c b/drivers/mmc/core/sdio_uart.c
index ae7ef2e038be..47f58258d8ff 100644
--- a/drivers/mmc/core/sdio_uart.c
+++ b/drivers/mmc/core/sdio_uart.c
@@ -526,7 +526,7 @@ static void sdio_uart_irq(struct sdio_func *func)
 	port->in_sdio_uart_irq = NULL;
 }
 
-static int uart_carrier_raised(struct tty_port *tport)
+static bool uart_carrier_raised(struct tty_port *tport)
 {
 	struct sdio_uart_port *port =
 			container_of(tport, struct sdio_uart_port, port);
@@ -535,9 +535,8 @@ static int uart_carrier_raised(struct tty_port *tport)
 		return 1;
 	ret = sdio_uart_get_mctrl(port);
 	sdio_uart_release_func(port);
-	if (ret & TIOCM_CAR)
-		return 1;
-	return 0;
+
+	return ret & TIOCM_CAR;
 }
 
 /**
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 460d33a1e70b..01c4fd3ce7c8 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1454,7 +1454,7 @@ static const struct tty_operations serial_ops = {
 	.proc_show = rs_proc_show,
 };
 
-static int amiga_carrier_raised(struct tty_port *port)
+static bool amiga_carrier_raised(struct tty_port *port)
 {
 	return !(ciab.pra & SER_DCD);
 }
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 2d9635e14ded..6a1e78e33a2c 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -501,7 +501,7 @@ static int moxa_tiocmset(struct tty_struct *tty,
 static void moxa_poll(struct timer_list *);
 static void moxa_set_tty_param(struct tty_struct *, const struct ktermios *);
 static void moxa_shutdown(struct tty_port *);
-static int moxa_carrier_raised(struct tty_port *);
+static bool moxa_carrier_raised(struct tty_port *);
 static void moxa_dtr_rts(struct tty_port *, int);
 /*
  * moxa board interface functions:
@@ -1432,7 +1432,7 @@ static void moxa_shutdown(struct tty_port *port)
 	MoxaPortFlushData(ch, 2);
 }
 
-static int moxa_carrier_raised(struct tty_port *port)
+static bool moxa_carrier_raised(struct tty_port *port)
 {
 	struct moxa_port *ch = container_of(port, struct moxa_port, port);
 	int dcd;
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 2926a831727d..96c72e691cd7 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -458,10 +458,11 @@ static void __mxser_stop_tx(struct mxser_port *info)
 	outb(info->IER, info->ioaddr + UART_IER);
 }
 
-static int mxser_carrier_raised(struct tty_port *port)
+static bool mxser_carrier_raised(struct tty_port *port)
 {
 	struct mxser_port *mp = container_of(port, struct mxser_port, port);
-	return (inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD)?1:0;
+
+	return inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD;
 }
 
 static void mxser_dtr_rts(struct tty_port *port, int on)
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 631539c17d85..81fc2ec3693f 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -3770,16 +3770,16 @@ static int gsm_modem_update(struct gsm_dlci *dlci, u8 brk)
 	return -EPROTONOSUPPORT;
 }
 
-static int gsm_carrier_raised(struct tty_port *port)
+static bool gsm_carrier_raised(struct tty_port *port)
 {
 	struct gsm_dlci *dlci = container_of(port, struct gsm_dlci, port);
 	struct gsm_mux *gsm = dlci->gsm;
 
 	/* Not yet open so no carrier info */
 	if (dlci->state != DLCI_OPEN)
-		return 0;
+		return false;
 	if (debug & DBG_CD_ON)
-		return 1;
+		return true;
 
 	/*
 	 * Basic mode with control channel in ADM mode may not respond
@@ -3787,7 +3787,7 @@ static int gsm_carrier_raised(struct tty_port *port)
 	 */
 	if (gsm->encoding == GSM_BASIC_OPT &&
 	    gsm->dlci[0]->mode == DLCI_MODE_ADM && !dlci->modem_rx)
-		return 1;
+		return true;
 
 	return dlci->modem_rx & TIOCM_CD;
 }
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f7074ac02801..20ed8a088b2d 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1861,7 +1861,7 @@ static void uart_port_shutdown(struct tty_port *port)
 	}
 }
 
-static int uart_carrier_raised(struct tty_port *port)
+static bool uart_carrier_raised(struct tty_port *port)
 {
 	struct uart_state *state = container_of(port, struct uart_state, port);
 	struct uart_port *uport;
@@ -1875,15 +1875,14 @@ static int uart_carrier_raised(struct tty_port *port)
 	 * continue and not sleep
 	 */
 	if (WARN_ON(!uport))
-		return 1;
+		return true;
 	spin_lock_irq(&uport->lock);
 	uart_enable_ms(uport);
 	mctrl = uport->ops->get_mctrl(uport);
 	spin_unlock_irq(&uport->lock);
 	uart_port_deref(uport);
-	if (mctrl & TIOCM_CAR)
-		return 1;
-	return 0;
+
+	return mctrl & TIOCM_CAR;
 }
 
 static void uart_dtr_rts(struct tty_port *port, int raise)
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 81c94906f06e..4ba71ec764f7 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -3126,7 +3126,7 @@ static int tiocmset(struct tty_struct *tty,
 	return 0;
 }
 
-static int carrier_raised(struct tty_port *port)
+static bool carrier_raised(struct tty_port *port)
 {
 	unsigned long flags;
 	struct slgt_info *info = container_of(port, struct slgt_info, port);
@@ -3134,7 +3134,8 @@ static int carrier_raised(struct tty_port *port)
 	spin_lock_irqsave(&info->lock,flags);
 	get_gtsignals(info);
 	spin_unlock_irqrestore(&info->lock,flags);
-	return (info->signals & SerialSignal_DCD) ? 1 : 0;
+
+	return info->signals & SerialSignal_DCD;
 }
 
 static void dtr_rts(struct tty_port *port, int on)
@@ -3162,7 +3163,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 	int		retval;
 	bool		do_clocal = false;
 	unsigned long	flags;
-	int		cd;
+	bool		cd;
 	struct tty_port *port = &info->port;
 
 	DBGINFO(("%s block_til_ready\n", tty->driver->name));
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 469de3c010b8..a573c500f95b 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -444,10 +444,10 @@ EXPORT_SYMBOL_GPL(tty_port_tty_wakeup);
  * to hide some internal details. This will eventually become entirely
  * internal to the tty port.
  */
-int tty_port_carrier_raised(struct tty_port *port)
+bool tty_port_carrier_raised(struct tty_port *port)
 {
 	if (port->ops->carrier_raised == NULL)
-		return 1;
+		return true;
 	return port->ops->carrier_raised(port);
 }
 EXPORT_SYMBOL(tty_port_carrier_raised);
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 164521ee10c6..019720a63fac 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -754,7 +754,7 @@ static struct usb_serial_driver *search_serial_device(
 	return NULL;
 }
 
-static int serial_port_carrier_raised(struct tty_port *port)
+static bool serial_port_carrier_raised(struct tty_port *port)
 {
 	struct usb_serial_port *p = container_of(port, struct usb_serial_port, port);
 	struct usb_serial_driver *drv = p->serial->type;
@@ -762,7 +762,7 @@ static int serial_port_carrier_raised(struct tty_port *port)
 	if (drv->carrier_raised)
 		return drv->carrier_raised(p);
 	/* No carrier control - don't block */
-	return 1;
+	return true;
 }
 
 static void serial_port_dtr_rts(struct tty_port *port, int on)
diff --git a/include/linux/tty_port.h b/include/linux/tty_port.h
index fa3c3bdaa234..cf098459cb01 100644
--- a/include/linux/tty_port.h
+++ b/include/linux/tty_port.h
@@ -15,7 +15,7 @@ struct tty_struct;
 
 /**
  * struct tty_port_operations -- operations on tty_port
- * @carrier_raised: return 1 if the carrier is raised on @port
+ * @carrier_raised: return true if the carrier is raised on @port
  * @dtr_rts: raise the DTR line if @raise is nonzero, otherwise lower DTR
  * @shutdown: called when the last close completes or a hangup finishes IFF the
  *	port was initialized. Do not use to free resources. Turn off the device
@@ -31,7 +31,7 @@ struct tty_struct;
  *	the port itself.
  */
 struct tty_port_operations {
-	int (*carrier_raised)(struct tty_port *port);
+	bool (*carrier_raised)(struct tty_port *port);
 	void (*dtr_rts)(struct tty_port *port, int raise);
 	void (*shutdown)(struct tty_port *port);
 	int (*activate)(struct tty_port *port, struct tty_struct *tty);
@@ -230,7 +230,7 @@ static inline void tty_port_set_kopened(struct tty_port *port, bool val)
 
 struct tty_struct *tty_port_tty_get(struct tty_port *port);
 void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty);
-int tty_port_carrier_raised(struct tty_port *port);
+bool tty_port_carrier_raised(struct tty_port *port);
 void tty_port_raise_dtr_rts(struct tty_port *port);
 void tty_port_lower_dtr_rts(struct tty_port *port);
 void tty_port_hangup(struct tty_port *port);
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index 8009e0e93216..5697df9d4394 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -119,7 +119,7 @@ static int rfcomm_dev_activate(struct tty_port *port, struct tty_struct *tty)
 }
 
 /* we block the open until the dlc->state becomes BT_CONNECTED */
-static int rfcomm_dev_carrier_raised(struct tty_port *port)
+static bool rfcomm_dev_carrier_raised(struct tty_port *port)
 {
 	struct rfcomm_dev *dev = container_of(port, struct rfcomm_dev, port);
 
-- 
2.30.2

[PATCH v4 07/12] tty: Convert ->dtr_rts() to take bool argument

[Ilpo Järvinen]

Convert the raise/on parameter in ->dtr_rts() to bool through the
callchain. The parameter is used like bool. In USB serial, there
remains a few implicit bool -> larger type conversions because some
devices use u8 in their control messages.

In moxa_tiocmget(), dtr variable was reused for line status which
requires int so use a separate variable for status.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/char/pcmcia/synclink_cs.c |  4 +--
 drivers/mmc/core/sdio_uart.c      |  4 +--
 drivers/staging/greybus/uart.c    |  2 +-
 drivers/tty/amiserial.c           |  2 +-
 drivers/tty/hvc/hvc_console.c     |  4 +--
 drivers/tty/hvc/hvc_console.h     |  2 +-
 drivers/tty/hvc/hvc_iucv.c        |  4 +--
 drivers/tty/moxa.c                | 54 ++++++++++++++++---------------
 drivers/tty/mxser.c               |  2 +-
 drivers/tty/n_gsm.c               |  2 +-
 drivers/tty/serial/serial_core.c  |  8 ++---
 drivers/tty/synclink_gt.c         |  2 +-
 drivers/tty/tty_port.c            |  4 +--
 drivers/usb/class/cdc-acm.c       |  2 +-
 drivers/usb/serial/usb-serial.c   |  2 +-
 include/linux/tty_port.h          |  4 +--
 16 files changed, 52 insertions(+), 50 deletions(-)

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 4391138e1b8a..46a0b586d234 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -378,7 +378,7 @@ static void async_mode(MGSLPC_INFO *info);
 static void tx_timeout(struct timer_list *t);
 
 static bool carrier_raised(struct tty_port *port);
-static void dtr_rts(struct tty_port *port, int onoff);
+static void dtr_rts(struct tty_port *port, bool onoff);
 
 #if SYNCLINK_GENERIC_HDLC
 #define dev_to_port(D) (dev_to_hdlc(D)->priv)
@@ -2442,7 +2442,7 @@ static bool carrier_raised(struct tty_port *port)
 	return info->serial_signals & SerialSignal_DCD;
 }
 
-static void dtr_rts(struct tty_port *port, int onoff)
+static void dtr_rts(struct tty_port *port, bool onoff)
 {
 	MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
 	unsigned long flags;
diff --git a/drivers/mmc/core/sdio_uart.c b/drivers/mmc/core/sdio_uart.c
index 47f58258d8ff..c6b4b2b2a4b2 100644
--- a/drivers/mmc/core/sdio_uart.c
+++ b/drivers/mmc/core/sdio_uart.c
@@ -548,14 +548,14 @@ static bool uart_carrier_raised(struct tty_port *tport)
  *	adjusted during an open, close and hangup.
  */
 
-static void uart_dtr_rts(struct tty_port *tport, int onoff)
+static void uart_dtr_rts(struct tty_port *tport, bool onoff)
 {
 	struct sdio_uart_port *port =
 			container_of(tport, struct sdio_uart_port, port);
 	int ret = sdio_uart_claim_func(port);
 	if (ret)
 		return;
-	if (onoff == 0)
+	if (!onoff)
 		sdio_uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
 	else
 		sdio_uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index 90ff07f2cbf7..92d49740d5a4 100644
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -701,7 +701,7 @@ static int gb_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
 	return -ENOIOCTLCMD;
 }
 
-static void gb_tty_dtr_rts(struct tty_port *port, int on)
+static void gb_tty_dtr_rts(struct tty_port *port, bool on)
 {
 	struct gb_tty *gb_tty;
 	u8 newctrl;
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 01c4fd3ce7c8..29d4c554f6b8 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1459,7 +1459,7 @@ static bool amiga_carrier_raised(struct tty_port *port)
 	return !(ciab.pra & SER_DCD);
 }
 
-static void amiga_dtr_rts(struct tty_port *port, int raise)
+static void amiga_dtr_rts(struct tty_port *port, bool raise)
 {
 	struct serial_state *info = container_of(port, struct serial_state,
 			tport);
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index a683e21df19c..10c10cfdf92a 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -376,7 +376,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 		/* We are ready... raise DTR/RTS */
 		if (C_BAUD(tty))
 			if (hp->ops->dtr_rts)
-				hp->ops->dtr_rts(hp, 1);
+				hp->ops->dtr_rts(hp, true);
 		tty_port_set_initialized(&hp->port, true);
 	}
 
@@ -406,7 +406,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
 
 		if (C_HUPCL(tty))
 			if (hp->ops->dtr_rts)
-				hp->ops->dtr_rts(hp, 0);
+				hp->ops->dtr_rts(hp, false);
 
 		if (hp->ops->notifier_del)
 			hp->ops->notifier_del(hp, hp->data);
diff --git a/drivers/tty/hvc/hvc_console.h b/drivers/tty/hvc/hvc_console.h
index 18d005814e4b..6d3428bf868f 100644
--- a/drivers/tty/hvc/hvc_console.h
+++ b/drivers/tty/hvc/hvc_console.h
@@ -66,7 +66,7 @@ struct hv_ops {
 	int (*tiocmset)(struct hvc_struct *hp, unsigned int set, unsigned int clear);
 
 	/* Callbacks to handle tty ports */
-	void (*dtr_rts)(struct hvc_struct *hp, int raise);
+	void (*dtr_rts)(struct hvc_struct *hp, bool raise);
 };
 
 /* Register a vterm and a slot index for use as a console (console_init) */
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index 7d49a872de48..fe862a6882d6 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -658,13 +658,13 @@ static void hvc_iucv_notifier_hangup(struct hvc_struct *hp, int id)
 /**
  * hvc_iucv_dtr_rts() - HVC notifier for handling DTR/RTS
  * @hp:		Pointer the HVC device (struct hvc_struct)
- * @raise:	Non-zero to raise or zero to lower DTR/RTS lines
+ * @raise:	True to raise or false to lower DTR/RTS lines
  *
  * This routine notifies the HVC back-end to raise or lower DTR/RTS
  * lines.  Raising DTR/RTS is ignored.  Lowering DTR/RTS indicates to
  * drop the IUCV connection (similar to hang up the modem).
  */
-static void hvc_iucv_dtr_rts(struct hvc_struct *hp, int raise)
+static void hvc_iucv_dtr_rts(struct hvc_struct *hp, bool raise)
 {
 	struct hvc_iucv_private *priv;
 	struct iucv_path        *path;
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 6a1e78e33a2c..9be3d585d5a9 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -502,15 +502,15 @@ static void moxa_poll(struct timer_list *);
 static void moxa_set_tty_param(struct tty_struct *, const struct ktermios *);
 static void moxa_shutdown(struct tty_port *);
 static bool moxa_carrier_raised(struct tty_port *);
-static void moxa_dtr_rts(struct tty_port *, int);
+static void moxa_dtr_rts(struct tty_port *, bool);
 /*
  * moxa board interface functions:
  */
 static void MoxaPortEnable(struct moxa_port *);
 static void MoxaPortDisable(struct moxa_port *);
 static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t);
-static int MoxaPortGetLineOut(struct moxa_port *, int *, int *);
-static void MoxaPortLineCtrl(struct moxa_port *, int, int);
+static int MoxaPortGetLineOut(struct moxa_port *, bool *, bool *);
+static void MoxaPortLineCtrl(struct moxa_port *, bool, bool);
 static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int);
 static int MoxaPortLineStatus(struct moxa_port *);
 static void MoxaPortFlushData(struct moxa_port *, int);
@@ -1443,7 +1443,7 @@ static bool moxa_carrier_raised(struct tty_port *port)
 	return dcd;
 }
 
-static void moxa_dtr_rts(struct tty_port *port, int onoff)
+static void moxa_dtr_rts(struct tty_port *port, bool onoff)
 {
 	struct moxa_port *ch = container_of(port, struct moxa_port, port);
 	MoxaPortLineCtrl(ch, onoff, onoff);
@@ -1481,7 +1481,7 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
 	if (!tty_port_initialized(&ch->port)) {
 		ch->statusflags = 0;
 		moxa_set_tty_param(tty, &tty->termios);
-		MoxaPortLineCtrl(ch, 1, 1);
+		MoxaPortLineCtrl(ch, true, true);
 		MoxaPortEnable(ch);
 		MoxaSetFifo(ch, ch->type == PORT_16550A);
 		tty_port_set_initialized(&ch->port, true);
@@ -1557,19 +1557,21 @@ static unsigned int moxa_chars_in_buffer(struct tty_struct *tty)
 static int moxa_tiocmget(struct tty_struct *tty)
 {
 	struct moxa_port *ch = tty->driver_data;
-	int flag = 0, dtr, rts;
+	bool dtr, rts;
+	int flag = 0;
+	int status;
 
 	MoxaPortGetLineOut(ch, &dtr, &rts);
 	if (dtr)
 		flag |= TIOCM_DTR;
 	if (rts)
 		flag |= TIOCM_RTS;
-	dtr = MoxaPortLineStatus(ch);
-	if (dtr & 1)
+	status = MoxaPortLineStatus(ch);
+	if (status & 1)
 		flag |= TIOCM_CTS;
-	if (dtr & 2)
+	if (status & 2)
 		flag |= TIOCM_DSR;
-	if (dtr & 4)
+	if (status & 4)
 		flag |= TIOCM_CD;
 	return flag;
 }
@@ -1578,7 +1580,7 @@ static int moxa_tiocmset(struct tty_struct *tty,
 			 unsigned int set, unsigned int clear)
 {
 	struct moxa_port *ch;
-	int dtr, rts;
+	bool dtr, rts;
 
 	mutex_lock(&moxa_openlock);
 	ch = tty->driver_data;
@@ -1589,13 +1591,13 @@ static int moxa_tiocmset(struct tty_struct *tty,
 
 	MoxaPortGetLineOut(ch, &dtr, &rts);
 	if (set & TIOCM_RTS)
-		rts = 1;
+		rts = true;
 	if (set & TIOCM_DTR)
-		dtr = 1;
+		dtr = true;
 	if (clear & TIOCM_RTS)
-		rts = 0;
+		rts = false;
 	if (clear & TIOCM_DTR)
-		dtr = 0;
+		dtr = false;
 	MoxaPortLineCtrl(ch, dtr, rts);
 	mutex_unlock(&moxa_openlock);
 	return 0;
@@ -1877,12 +1879,12 @@ static void MoxaPortFlushData(struct moxa_port *port, int mode)
  *
  *      Function 13:    Get the DTR/RTS state of this port.
  *      Syntax:
- *      int  MoxaPortGetLineOut(int port, int *dtrState, int *rtsState);
+ *      int  MoxaPortGetLineOut(int port, bool *dtrState, bool *rtsState);
  *           int port           : port number (0 - 127)
- *           int * dtrState     : pointer to INT to receive the current DTR
+ *           bool * dtrState    : pointer to bool to receive the current DTR
  *                                state. (if NULL, this function will not
  *                                write to this address)
- *           int * rtsState     : pointer to INT to receive the current RTS
+ *           bool * rtsState    : pointer to bool to receive the current RTS
  *                                state. (if NULL, this function will not
  *                                write to this address)
  *
@@ -1892,10 +1894,10 @@ static void MoxaPortFlushData(struct moxa_port *port, int mode)
  *
  *      Function 14:    Setting the DTR/RTS output state of this port.
  *      Syntax:
- *      void MoxaPortLineCtrl(int port, int dtrState, int rtsState);
+ *      void MoxaPortLineCtrl(int port, bool dtrState, bool rtsState);
  *           int port           : port number (0 - 127)
- *           int dtrState       : DTR output state (0: off, 1: on)
- *           int rtsState       : RTS output state (0: off, 1: on)
+ *           bool dtrState      : DTR output state
+ *           bool rtsState      : RTS output state
  *
  *
  *      Function 15:    Setting the flow control of this port.
@@ -2103,18 +2105,18 @@ static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio,
 	return baud;
 }
 
-static int MoxaPortGetLineOut(struct moxa_port *port, int *dtrState,
-		int *rtsState)
+static int MoxaPortGetLineOut(struct moxa_port *port, bool *dtrState,
+		bool *rtsState)
 {
 	if (dtrState)
-		*dtrState = !!(port->lineCtrl & DTR_ON);
+		*dtrState = port->lineCtrl & DTR_ON;
 	if (rtsState)
-		*rtsState = !!(port->lineCtrl & RTS_ON);
+		*rtsState = port->lineCtrl & RTS_ON;
 
 	return 0;
 }
 
-static void MoxaPortLineCtrl(struct moxa_port *port, int dtr, int rts)
+static void MoxaPortLineCtrl(struct moxa_port *port, bool dtr, bool rts)
 {
 	u8 mode = 0;
 
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 96c72e691cd7..d4fb11e39bb1 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -465,7 +465,7 @@ static bool mxser_carrier_raised(struct tty_port *port)
 	return inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD;
 }
 
-static void mxser_dtr_rts(struct tty_port *port, int on)
+static void mxser_dtr_rts(struct tty_port *port, bool on)
 {
 	struct mxser_port *mp = container_of(port, struct mxser_port, port);
 	unsigned long flags;
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 81fc2ec3693f..8dd0d6441c42 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -3792,7 +3792,7 @@ static bool gsm_carrier_raised(struct tty_port *port)
 	return dlci->modem_rx & TIOCM_CD;
 }
 
-static void gsm_dtr_rts(struct tty_port *port, int onoff)
+static void gsm_dtr_rts(struct tty_port *port, bool onoff)
 {
 	struct gsm_dlci *dlci = container_of(port, struct gsm_dlci, port);
 	unsigned int modem_tx = dlci->modem_tx;
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 20ed8a088b2d..053535846ba2 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -169,7 +169,7 @@ uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear)
 #define uart_set_mctrl(port, set)	uart_update_mctrl(port, set, 0)
 #define uart_clear_mctrl(port, clear)	uart_update_mctrl(port, 0, clear)
 
-static void uart_port_dtr_rts(struct uart_port *uport, int raise)
+static void uart_port_dtr_rts(struct uart_port *uport, bool raise)
 {
 	if (raise)
 		uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
@@ -239,7 +239,7 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
 		 * port is open and ready to respond.
 		 */
 		if (init_hw && C_BAUD(tty))
-			uart_port_dtr_rts(uport, 1);
+			uart_port_dtr_rts(uport, true);
 	}
 
 	/*
@@ -302,7 +302,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
 		}
 
 		if (!tty || C_HUPCL(tty))
-			uart_port_dtr_rts(uport, 0);
+			uart_port_dtr_rts(uport, false);
 
 		uart_port_shutdown(port);
 	}
@@ -1885,7 +1885,7 @@ static bool uart_carrier_raised(struct tty_port *port)
 	return mctrl & TIOCM_CAR;
 }
 
-static void uart_dtr_rts(struct tty_port *port, int raise)
+static void uart_dtr_rts(struct tty_port *port, bool raise)
 {
 	struct uart_state *state = container_of(port, struct uart_state, port);
 	struct uart_port *uport;
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 4ba71ec764f7..2b786265ce7b 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -3138,7 +3138,7 @@ static bool carrier_raised(struct tty_port *port)
 	return info->signals & SerialSignal_DCD;
 }
 
-static void dtr_rts(struct tty_port *port, int on)
+static void dtr_rts(struct tty_port *port, bool on)
 {
 	unsigned long flags;
 	struct slgt_info *info = container_of(port, struct slgt_info, port);
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index a573c500f95b..a788a6bf487d 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -463,7 +463,7 @@ EXPORT_SYMBOL(tty_port_carrier_raised);
 void tty_port_raise_dtr_rts(struct tty_port *port)
 {
 	if (port->ops->dtr_rts)
-		port->ops->dtr_rts(port, 1);
+		port->ops->dtr_rts(port, true);
 }
 EXPORT_SYMBOL(tty_port_raise_dtr_rts);
 
@@ -478,7 +478,7 @@ EXPORT_SYMBOL(tty_port_raise_dtr_rts);
 void tty_port_lower_dtr_rts(struct tty_port *port)
 {
 	if (port->ops->dtr_rts)
-		port->ops->dtr_rts(port, 0);
+		port->ops->dtr_rts(port, false);
 }
 EXPORT_SYMBOL(tty_port_lower_dtr_rts);
 
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 36bf051b345b..d4f9220b8162 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -651,7 +651,7 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
 	return tty_port_open(&acm->port, tty, filp);
 }
 
-static void acm_port_dtr_rts(struct tty_port *port, int raise)
+static void acm_port_dtr_rts(struct tty_port *port, bool raise)
 {
 	struct acm *acm = container_of(port, struct acm, port);
 	int val;
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 019720a63fac..f8404073558b 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -765,7 +765,7 @@ static bool serial_port_carrier_raised(struct tty_port *port)
 	return true;
 }
 
-static void serial_port_dtr_rts(struct tty_port *port, int on)
+static void serial_port_dtr_rts(struct tty_port *port, bool on)
 {
 	struct usb_serial_port *p = container_of(port, struct usb_serial_port, port);
 	struct usb_serial_driver *drv = p->serial->type;
diff --git a/include/linux/tty_port.h b/include/linux/tty_port.h
index cf098459cb01..c44e489de0ff 100644
--- a/include/linux/tty_port.h
+++ b/include/linux/tty_port.h
@@ -16,7 +16,7 @@ struct tty_struct;
 /**
  * struct tty_port_operations -- operations on tty_port
  * @carrier_raised: return true if the carrier is raised on @port
- * @dtr_rts: raise the DTR line if @raise is nonzero, otherwise lower DTR
+ * @dtr_rts: raise the DTR line if @raise is true, otherwise lower DTR
  * @shutdown: called when the last close completes or a hangup finishes IFF the
  *	port was initialized. Do not use to free resources. Turn off the device
  *	only. Called under the port mutex to serialize against @activate and
@@ -32,7 +32,7 @@ struct tty_struct;
  */
 struct tty_port_operations {
 	bool (*carrier_raised)(struct tty_port *port);
-	void (*dtr_rts)(struct tty_port *port, int raise);
+	void (*dtr_rts)(struct tty_port *port, bool raise);
 	void (*shutdown)(struct tty_port *port);
 	int (*activate)(struct tty_port *port, struct tty_struct *tty);
 	void (*destruct)(struct tty_port *port);
-- 
2.30.2

[PATCH v4 08/12] tty/serial: Make ->dcd_change()+uart_handle_dcd_change() status bool active

[Ilpo Järvinen]

Convert status parameter for ->dcd_change() and
uart_handle_dcd_change() to bool which matches to how the parameter is
used.

Rename status to active to better describe what the parameter means.

Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/pps/clients/pps-ldisc.c  | 6 +++---
 drivers/tty/serial/serial_core.c | 8 ++++----
 drivers/tty/serial/sunhv.c       | 8 ++++----
 include/linux/serial_core.h      | 3 +--
 include/linux/tty_ldisc.h        | 4 ++--
 5 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/drivers/pps/clients/pps-ldisc.c b/drivers/pps/clients/pps-ldisc.c
index d73c4c2ed4e1..443d6bae19d1 100644
--- a/drivers/pps/clients/pps-ldisc.c
+++ b/drivers/pps/clients/pps-ldisc.c
@@ -13,7 +13,7 @@
 #include <linux/pps_kernel.h>
 #include <linux/bug.h>
 
-static void pps_tty_dcd_change(struct tty_struct *tty, unsigned int status)
+static void pps_tty_dcd_change(struct tty_struct *tty, bool active)
 {
 	struct pps_device *pps;
 	struct pps_event_time ts;
@@ -29,11 +29,11 @@ static void pps_tty_dcd_change(struct tty_struct *tty, unsigned int status)
 		return;
 
 	/* Now do the PPS event report */
-	pps_event(pps, &ts, status ? PPS_CAPTUREASSERT :
+	pps_event(pps, &ts, active ? PPS_CAPTUREASSERT :
 			PPS_CAPTURECLEAR, NULL);
 
 	dev_dbg(pps->dev, "PPS %s at %lu\n",
-			status ? "assert" : "clear", jiffies);
+			active ? "assert" : "clear", jiffies);
 }
 
 static int (*alias_n_tty_open)(struct tty_struct *tty);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 053535846ba2..f8a9386db482 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3252,11 +3252,11 @@ EXPORT_SYMBOL(uart_match_port);
 /**
  * uart_handle_dcd_change - handle a change of carrier detect state
  * @uport: uart_port structure for the open port
- * @status: new carrier detect status, nonzero if active
+ * @active: new carrier detect status
  *
  * Caller must hold uport->lock.
  */
-void uart_handle_dcd_change(struct uart_port *uport, unsigned int status)
+void uart_handle_dcd_change(struct uart_port *uport, bool active)
 {
 	struct tty_port *port = &uport->state->port;
 	struct tty_struct *tty = port->tty;
@@ -3268,7 +3268,7 @@ void uart_handle_dcd_change(struct uart_port *uport, unsigned int status)
 		ld = tty_ldisc_ref(tty);
 		if (ld) {
 			if (ld->ops->dcd_change)
-				ld->ops->dcd_change(tty, status);
+				ld->ops->dcd_change(tty, active);
 			tty_ldisc_deref(ld);
 		}
 	}
@@ -3276,7 +3276,7 @@ void uart_handle_dcd_change(struct uart_port *uport, unsigned int status)
 	uport->icount.dcd++;
 
 	if (uart_dcd_enabled(uport)) {
-		if (status)
+		if (active)
 			wake_up_interruptible(&port->open_wait);
 		else if (tty)
 			tty_hangup(tty);
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index 16c746a63258..7d38c33ef506 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -87,10 +87,10 @@ static int receive_chars_getchar(struct uart_port *port)
 
 		if (c == CON_HUP) {
 			hung_up = 1;
-			uart_handle_dcd_change(port, 0);
+			uart_handle_dcd_change(port, false);
 		} else if (hung_up) {
 			hung_up = 0;
-			uart_handle_dcd_change(port, 1);
+			uart_handle_dcd_change(port, true);
 		}
 
 		if (port->state == NULL) {
@@ -133,7 +133,7 @@ static int receive_chars_read(struct uart_port *port)
 				bytes_read = 1;
 			} else if (stat == CON_HUP) {
 				hung_up = 1;
-				uart_handle_dcd_change(port, 0);
+				uart_handle_dcd_change(port, false);
 				continue;
 			} else {
 				/* HV_EWOULDBLOCK, etc.  */
@@ -143,7 +143,7 @@ static int receive_chars_read(struct uart_port *port)
 
 		if (hung_up) {
 			hung_up = 0;
-			uart_handle_dcd_change(port, 1);
+			uart_handle_dcd_change(port, true);
 		}
 
 		if (port->sysrq != 0 &&  *con_read_page) {
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index fd59f600094a..760c96ffb5bd 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -896,8 +896,7 @@ static inline bool uart_softcts_mode(struct uart_port *uport)
  * The following are helper functions for the low level drivers.
  */
 
-extern void uart_handle_dcd_change(struct uart_port *uport,
-		unsigned int status);
+extern void uart_handle_dcd_change(struct uart_port *uport, bool active);
 extern void uart_handle_cts_change(struct uart_port *uport,
 		unsigned int status);
 
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index dcb61ec11424..49dc172dedc7 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -170,7 +170,7 @@ int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
  *	send, please arise a tasklet or workqueue to do the real data transfer.
  *	Do not send data in this hook, it may lead to a deadlock.
  *
- * @dcd_change: [DRV] ``void ()(struct tty_struct *tty, unsigned int status)``
+ * @dcd_change: [DRV] ``void ()(struct tty_struct *tty, bool active)``
  *
  *	Tells the discipline that the DCD pin has changed its status. Used
  *	exclusively by the %N_PPS (Pulse-Per-Second) line discipline.
@@ -238,7 +238,7 @@ struct tty_ldisc_ops {
 	void	(*receive_buf)(struct tty_struct *tty, const unsigned char *cp,
 			       const char *fp, int count);
 	void	(*write_wakeup)(struct tty_struct *tty);
-	void	(*dcd_change)(struct tty_struct *tty, unsigned int status);
+	void	(*dcd_change)(struct tty_struct *tty, bool active);
 	int	(*receive_buf2)(struct tty_struct *tty, const unsigned char *cp,
 				const char *fp, int count);
 	void	(*lookahead_buf)(struct tty_struct *tty, const unsigned char *cp,
-- 
2.30.2

[PATCH v4 09/12] serial: Make uart_handle_cts_change() status param bool active

[Ilpo Järvinen]

Convert uart_handle_cts_change() to bool which is more appropriate
than unsigned int.

Rename status to active to better describe what the parameter means.
While at it, make the comment about the active parameter easier to
parse.

Cleanup callsites from operations that are not necessary with bool.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/serial/imx.c         | 2 +-
 drivers/tty/serial/max3100.c     | 2 +-
 drivers/tty/serial/max310x.c     | 3 +--
 drivers/tty/serial/serial_core.c | 8 ++++----
 include/linux/serial_core.h      | 3 +--
 5 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 757825edb0cd..07850a9cde61 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -771,7 +771,7 @@ static irqreturn_t __imx_uart_rtsint(int irq, void *dev_id)
 
 	imx_uart_writel(sport, USR1_RTSD, USR1);
 	usr1 = imx_uart_readl(sport, USR1) & USR1_RTSS;
-	uart_handle_cts_change(&sport->port, !!usr1);
+	uart_handle_cts_change(&sport->port, usr1);
 	wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
 
 	return IRQ_HANDLED;
diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
index bb74f23251fe..86dcbff8faa3 100644
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -247,7 +247,7 @@ static int max3100_handlerx(struct max3100_port *s, u16 rx)
 	cts = (rx & MAX3100_CTS) > 0;
 	if (s->cts != cts) {
 		s->cts = cts;
-		uart_handle_cts_change(&s->port, cts ? TIOCM_CTS : 0);
+		uart_handle_cts_change(&s->port, cts);
 	}
 
 	return ret;
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index 4eb24e3407f8..e9cacfe7e032 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -819,8 +819,7 @@ static irqreturn_t max310x_port_irq(struct max310x_port *s, int portno)
 
 		if (ists & MAX310X_IRQ_CTS_BIT) {
 			lsr = max310x_port_read(port, MAX310X_LSR_IRQSTS_REG);
-			uart_handle_cts_change(port,
-					       !!(lsr & MAX310X_LSR_CTS_BIT));
+			uart_handle_cts_change(port, lsr & MAX310X_LSR_CTS_BIT);
 		}
 		if (rxlen)
 			max310x_handle_rx(port, rxlen);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index f8a9386db482..b8fff667d4f0 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -3287,11 +3287,11 @@ EXPORT_SYMBOL_GPL(uart_handle_dcd_change);
 /**
  * uart_handle_cts_change - handle a change of clear-to-send state
  * @uport: uart_port structure for the open port
- * @status: new clear to send status, nonzero if active
+ * @active: new clear-to-send status
  *
  * Caller must hold uport->lock.
  */
-void uart_handle_cts_change(struct uart_port *uport, unsigned int status)
+void uart_handle_cts_change(struct uart_port *uport, bool active)
 {
 	lockdep_assert_held_once(&uport->lock);
 
@@ -3299,13 +3299,13 @@ void uart_handle_cts_change(struct uart_port *uport, unsigned int status)
 
 	if (uart_softcts_mode(uport)) {
 		if (uport->hw_stopped) {
-			if (status) {
+			if (active) {
 				uport->hw_stopped = 0;
 				uport->ops->start_tx(uport);
 				uart_write_wakeup(uport);
 			}
 		} else {
-			if (!status) {
+			if (!active) {
 				uport->hw_stopped = 1;
 				uport->ops->stop_tx(uport);
 			}
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 760c96ffb5bd..ddd7c9425938 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -897,8 +897,7 @@ static inline bool uart_softcts_mode(struct uart_port *uport)
  */
 
 extern void uart_handle_dcd_change(struct uart_port *uport, bool active);
-extern void uart_handle_cts_change(struct uart_port *uport,
-		unsigned int status);
+extern void uart_handle_cts_change(struct uart_port *uport, bool active);
 
 extern void uart_insert_char(struct uart_port *port, unsigned int status,
 		 unsigned int overrun, unsigned int ch, unsigned int flag);
-- 
2.30.2

[PATCH v4 10/12] tty: Return bool from tty_termios_hw_change()

[Ilpo Järvinen]

Change tty_termios_hw_change() to return bool.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/tty_ioctl.c | 8 ++++----
 include/linux/tty.h     | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c
index ce511557b98b..12983ce4e43e 100644
--- a/drivers/tty/tty_ioctl.c
+++ b/drivers/tty/tty_ioctl.c
@@ -270,13 +270,13 @@ EXPORT_SYMBOL(tty_termios_copy_hw);
  *	between the two termios structures, or a speed change is needed.
  */
 
-int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b)
+bool tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b)
 {
 	if (a->c_ispeed != b->c_ispeed || a->c_ospeed != b->c_ospeed)
-		return 1;
+		return true;
 	if ((a->c_cflag ^ b->c_cflag) & ~(HUPCL | CREAD | CLOCAL))
-		return 1;
-	return 0;
+		return true;
+	return false;
 }
 EXPORT_SYMBOL(tty_termios_hw_change);
 
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 730c3301d710..093935e97f42 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -453,7 +453,7 @@ unsigned char tty_get_char_size(unsigned int cflag);
 unsigned char tty_get_frame_size(unsigned int cflag);
 
 void tty_termios_copy_hw(struct ktermios *new, const struct ktermios *old);
-int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
+bool tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
 int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);
 
 void tty_wakeup(struct tty_struct *tty);
-- 
2.30.2

[PATCH v4 11/12] tty: Call ->dtr_rts() parameter active consistently

[Ilpo Järvinen]

Convert various parameter names for ->dtr_rts() and related functions
from onoff, on, and raise to active.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> # For MMC
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/char/pcmcia/synclink_cs.c | 6 +++---
 drivers/mmc/core/sdio_uart.c      | 6 +++---
 drivers/staging/greybus/uart.c    | 4 ++--
 drivers/tty/amiserial.c           | 4 ++--
 drivers/tty/hvc/hvc_console.h     | 2 +-
 drivers/tty/hvc/hvc_iucv.c        | 6 +++---
 drivers/tty/mxser.c               | 4 ++--
 drivers/tty/n_gsm.c               | 4 ++--
 drivers/tty/serial/serial_core.c  | 8 ++++----
 drivers/tty/synclink_gt.c         | 4 ++--
 drivers/usb/class/cdc-acm.c       | 4 ++--
 include/linux/tty_port.h          | 4 ++--
 12 files changed, 28 insertions(+), 28 deletions(-)

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 46a0b586d234..1577eba6fe0e 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -378,7 +378,7 @@ static void async_mode(MGSLPC_INFO *info);
 static void tx_timeout(struct timer_list *t);
 
 static bool carrier_raised(struct tty_port *port);
-static void dtr_rts(struct tty_port *port, bool onoff);
+static void dtr_rts(struct tty_port *port, bool active);
 
 #if SYNCLINK_GENERIC_HDLC
 #define dev_to_port(D) (dev_to_hdlc(D)->priv)
@@ -2442,13 +2442,13 @@ static bool carrier_raised(struct tty_port *port)
 	return info->serial_signals & SerialSignal_DCD;
 }
 
-static void dtr_rts(struct tty_port *port, bool onoff)
+static void dtr_rts(struct tty_port *port, bool active)
 {
 	MGSLPC_INFO *info = container_of(port, MGSLPC_INFO, port);
 	unsigned long flags;
 
 	spin_lock_irqsave(&info->lock, flags);
-	if (onoff)
+	if (active)
 		info->serial_signals |= SerialSignal_RTS | SerialSignal_DTR;
 	else
 		info->serial_signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
diff --git a/drivers/mmc/core/sdio_uart.c b/drivers/mmc/core/sdio_uart.c
index c6b4b2b2a4b2..50536fe59f1a 100644
--- a/drivers/mmc/core/sdio_uart.c
+++ b/drivers/mmc/core/sdio_uart.c
@@ -542,20 +542,20 @@ static bool uart_carrier_raised(struct tty_port *tport)
 /**
  *	uart_dtr_rts		-	 port helper to set uart signals
  *	@tport: tty port to be updated
- *	@onoff: set to turn on DTR/RTS
+ *	@active: set to turn on DTR/RTS
  *
  *	Called by the tty port helpers when the modem signals need to be
  *	adjusted during an open, close and hangup.
  */
 
-static void uart_dtr_rts(struct tty_port *tport, bool onoff)
+static void uart_dtr_rts(struct tty_port *tport, bool active)
 {
 	struct sdio_uart_port *port =
 			container_of(tport, struct sdio_uart_port, port);
 	int ret = sdio_uart_claim_func(port);
 	if (ret)
 		return;
-	if (!onoff)
+	if (!active)
 		sdio_uart_clear_mctrl(port, TIOCM_DTR | TIOCM_RTS);
 	else
 		sdio_uart_set_mctrl(port, TIOCM_DTR | TIOCM_RTS);
diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index 92d49740d5a4..20a34599859f 100644
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -701,7 +701,7 @@ static int gb_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
 	return -ENOIOCTLCMD;
 }
 
-static void gb_tty_dtr_rts(struct tty_port *port, bool on)
+static void gb_tty_dtr_rts(struct tty_port *port, bool active)
 {
 	struct gb_tty *gb_tty;
 	u8 newctrl;
@@ -709,7 +709,7 @@ static void gb_tty_dtr_rts(struct tty_port *port, bool on)
 	gb_tty = container_of(port, struct gb_tty, port);
 	newctrl = gb_tty->ctrlout;
 
-	if (on)
+	if (active)
 		newctrl |= (GB_UART_CTRL_DTR | GB_UART_CTRL_RTS);
 	else
 		newctrl &= ~(GB_UART_CTRL_DTR | GB_UART_CTRL_RTS);
diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 29d4c554f6b8..d7515d61659e 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1459,13 +1459,13 @@ static bool amiga_carrier_raised(struct tty_port *port)
 	return !(ciab.pra & SER_DCD);
 }
 
-static void amiga_dtr_rts(struct tty_port *port, bool raise)
+static void amiga_dtr_rts(struct tty_port *port, bool active)
 {
 	struct serial_state *info = container_of(port, struct serial_state,
 			tport);
 	unsigned long flags;
 
-	if (raise)
+	if (active)
 		info->MCR |= SER_DTR|SER_RTS;
 	else
 		info->MCR &= ~(SER_DTR|SER_RTS);
diff --git a/drivers/tty/hvc/hvc_console.h b/drivers/tty/hvc/hvc_console.h
index 6d3428bf868f..9668f821db01 100644
--- a/drivers/tty/hvc/hvc_console.h
+++ b/drivers/tty/hvc/hvc_console.h
@@ -66,7 +66,7 @@ struct hv_ops {
 	int (*tiocmset)(struct hvc_struct *hp, unsigned int set, unsigned int clear);
 
 	/* Callbacks to handle tty ports */
-	void (*dtr_rts)(struct hvc_struct *hp, bool raise);
+	void (*dtr_rts)(struct hvc_struct *hp, bool active);
 };
 
 /* Register a vterm and a slot index for use as a console (console_init) */
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index fe862a6882d6..543f35ddf523 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -658,13 +658,13 @@ static void hvc_iucv_notifier_hangup(struct hvc_struct *hp, int id)
 /**
  * hvc_iucv_dtr_rts() - HVC notifier for handling DTR/RTS
  * @hp:		Pointer the HVC device (struct hvc_struct)
- * @raise:	True to raise or false to lower DTR/RTS lines
+ * @active:	True to raise or false to lower DTR/RTS lines
  *
  * This routine notifies the HVC back-end to raise or lower DTR/RTS
  * lines.  Raising DTR/RTS is ignored.  Lowering DTR/RTS indicates to
  * drop the IUCV connection (similar to hang up the modem).
  */
-static void hvc_iucv_dtr_rts(struct hvc_struct *hp, bool raise)
+static void hvc_iucv_dtr_rts(struct hvc_struct *hp, bool active)
 {
 	struct hvc_iucv_private *priv;
 	struct iucv_path        *path;
@@ -672,7 +672,7 @@ static void hvc_iucv_dtr_rts(struct hvc_struct *hp, bool raise)
 	/* Raising the DTR/RTS is ignored as IUCV connections can be
 	 * established at any times.
 	 */
-	if (raise)
+	if (active)
 		return;
 
 	priv = hvc_iucv_get_private(hp->vtermno);
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index d4fb11e39bb1..ef3116e87975 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -465,7 +465,7 @@ static bool mxser_carrier_raised(struct tty_port *port)
 	return inb(mp->ioaddr + UART_MSR) & UART_MSR_DCD;
 }
 
-static void mxser_dtr_rts(struct tty_port *port, bool on)
+static void mxser_dtr_rts(struct tty_port *port, bool active)
 {
 	struct mxser_port *mp = container_of(port, struct mxser_port, port);
 	unsigned long flags;
@@ -473,7 +473,7 @@ static void mxser_dtr_rts(struct tty_port *port, bool on)
 
 	spin_lock_irqsave(&mp->slock, flags);
 	mcr = inb(mp->ioaddr + UART_MCR);
-	if (on)
+	if (active)
 		mcr |= UART_MCR_DTR | UART_MCR_RTS;
 	else
 		mcr &= ~(UART_MCR_DTR | UART_MCR_RTS);
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 8dd0d6441c42..4f29b00f2645 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -3792,11 +3792,11 @@ static bool gsm_carrier_raised(struct tty_port *port)
 	return dlci->modem_rx & TIOCM_CD;
 }
 
-static void gsm_dtr_rts(struct tty_port *port, bool onoff)
+static void gsm_dtr_rts(struct tty_port *port, bool active)
 {
 	struct gsm_dlci *dlci = container_of(port, struct gsm_dlci, port);
 	unsigned int modem_tx = dlci->modem_tx;
-	if (onoff)
+	if (active)
 		modem_tx |= TIOCM_DTR | TIOCM_RTS;
 	else
 		modem_tx &= ~(TIOCM_DTR | TIOCM_RTS);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index b8fff667d4f0..da4e4e8a2b50 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -169,9 +169,9 @@ uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear)
 #define uart_set_mctrl(port, set)	uart_update_mctrl(port, set, 0)
 #define uart_clear_mctrl(port, clear)	uart_update_mctrl(port, 0, clear)
 
-static void uart_port_dtr_rts(struct uart_port *uport, bool raise)
+static void uart_port_dtr_rts(struct uart_port *uport, bool active)
 {
-	if (raise)
+	if (active)
 		uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
 	else
 		uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
@@ -1885,7 +1885,7 @@ static bool uart_carrier_raised(struct tty_port *port)
 	return mctrl & TIOCM_CAR;
 }
 
-static void uart_dtr_rts(struct tty_port *port, bool raise)
+static void uart_dtr_rts(struct tty_port *port, bool active)
 {
 	struct uart_state *state = container_of(port, struct uart_state, port);
 	struct uart_port *uport;
@@ -1893,7 +1893,7 @@ static void uart_dtr_rts(struct tty_port *port, bool raise)
 	uport = uart_port_ref(state);
 	if (!uport)
 		return;
-	uart_port_dtr_rts(uport, raise);
+	uart_port_dtr_rts(uport, active);
 	uart_port_deref(uport);
 }
 
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 2b786265ce7b..33f258d6fef9 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -3138,13 +3138,13 @@ static bool carrier_raised(struct tty_port *port)
 	return info->signals & SerialSignal_DCD;
 }
 
-static void dtr_rts(struct tty_port *port, bool on)
+static void dtr_rts(struct tty_port *port, bool active)
 {
 	unsigned long flags;
 	struct slgt_info *info = container_of(port, struct slgt_info, port);
 
 	spin_lock_irqsave(&info->lock,flags);
-	if (on)
+	if (active)
 		info->signals |= SerialSignal_RTS | SerialSignal_DTR;
 	else
 		info->signals &= ~(SerialSignal_RTS | SerialSignal_DTR);
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index d4f9220b8162..11da5fb284d0 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -651,13 +651,13 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
 	return tty_port_open(&acm->port, tty, filp);
 }
 
-static void acm_port_dtr_rts(struct tty_port *port, bool raise)
+static void acm_port_dtr_rts(struct tty_port *port, bool active)
 {
 	struct acm *acm = container_of(port, struct acm, port);
 	int val;
 	int res;
 
-	if (raise)
+	if (active)
 		val = USB_CDC_CTRL_DTR | USB_CDC_CTRL_RTS;
 	else
 		val = 0;
diff --git a/include/linux/tty_port.h b/include/linux/tty_port.h
index c44e489de0ff..edf685a24f7c 100644
--- a/include/linux/tty_port.h
+++ b/include/linux/tty_port.h
@@ -16,7 +16,7 @@ struct tty_struct;
 /**
  * struct tty_port_operations -- operations on tty_port
  * @carrier_raised: return true if the carrier is raised on @port
- * @dtr_rts: raise the DTR line if @raise is true, otherwise lower DTR
+ * @dtr_rts: raise the DTR line if @active is true, otherwise lower DTR
  * @shutdown: called when the last close completes or a hangup finishes IFF the
  *	port was initialized. Do not use to free resources. Turn off the device
  *	only. Called under the port mutex to serialize against @activate and
@@ -32,7 +32,7 @@ struct tty_struct;
  */
 struct tty_port_operations {
 	bool (*carrier_raised)(struct tty_port *port);
-	void (*dtr_rts)(struct tty_port *port, bool raise);
+	void (*dtr_rts)(struct tty_port *port, bool active);
 	void (*shutdown)(struct tty_port *port);
 	int (*activate)(struct tty_port *port, struct tty_struct *tty);
 	void (*destruct)(struct tty_port *port);
-- 
2.30.2

[PATCH v4 12/12] tty: moxa: Rename dtr/rts parameters/variables to active

[Ilpo Järvinen]

Use active consistently for naming parameters and variables.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 drivers/tty/moxa.c | 52 +++++++++++++++++++++++-----------------------
 1 file changed, 26 insertions(+), 26 deletions(-)

diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 9be3d585d5a9..42fa4c878b2e 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1443,10 +1443,10 @@ static bool moxa_carrier_raised(struct tty_port *port)
 	return dcd;
 }
 
-static void moxa_dtr_rts(struct tty_port *port, bool onoff)
+static void moxa_dtr_rts(struct tty_port *port, bool active)
 {
 	struct moxa_port *ch = container_of(port, struct moxa_port, port);
-	MoxaPortLineCtrl(ch, onoff, onoff);
+	MoxaPortLineCtrl(ch, active, active);
 }
 
 
@@ -1557,14 +1557,14 @@ static unsigned int moxa_chars_in_buffer(struct tty_struct *tty)
 static int moxa_tiocmget(struct tty_struct *tty)
 {
 	struct moxa_port *ch = tty->driver_data;
-	bool dtr, rts;
+	bool dtr_active, rts_active;
 	int flag = 0;
 	int status;
 
-	MoxaPortGetLineOut(ch, &dtr, &rts);
-	if (dtr)
+	MoxaPortGetLineOut(ch, &dtr_active, &rts_active);
+	if (dtr_active)
 		flag |= TIOCM_DTR;
-	if (rts)
+	if (rts_active)
 		flag |= TIOCM_RTS;
 	status = MoxaPortLineStatus(ch);
 	if (status & 1)
@@ -1579,8 +1579,8 @@ static int moxa_tiocmget(struct tty_struct *tty)
 static int moxa_tiocmset(struct tty_struct *tty,
 			 unsigned int set, unsigned int clear)
 {
+	bool dtr_active, rts_active;
 	struct moxa_port *ch;
-	bool dtr, rts;
 
 	mutex_lock(&moxa_openlock);
 	ch = tty->driver_data;
@@ -1589,16 +1589,16 @@ static int moxa_tiocmset(struct tty_struct *tty,
 		return -EINVAL;
 	}
 
-	MoxaPortGetLineOut(ch, &dtr, &rts);
+	MoxaPortGetLineOut(ch, &dtr_active, &rts_active);
 	if (set & TIOCM_RTS)
-		rts = true;
+		rts_active = true;
 	if (set & TIOCM_DTR)
-		dtr = true;
+		dtr_active = true;
 	if (clear & TIOCM_RTS)
-		rts = false;
+		rts_active = false;
 	if (clear & TIOCM_DTR)
-		dtr = false;
-	MoxaPortLineCtrl(ch, dtr, rts);
+		dtr_active = false;
+	MoxaPortLineCtrl(ch, dtr_active, rts_active);
 	mutex_unlock(&moxa_openlock);
 	return 0;
 }
@@ -1881,10 +1881,10 @@ static void MoxaPortFlushData(struct moxa_port *port, int mode)
  *      Syntax:
  *      int  MoxaPortGetLineOut(int port, bool *dtrState, bool *rtsState);
  *           int port           : port number (0 - 127)
- *           bool * dtrState    : pointer to bool to receive the current DTR
+ *           bool * dtr_active  : pointer to bool to receive the current DTR
  *                                state. (if NULL, this function will not
  *                                write to this address)
- *           bool * rtsState    : pointer to bool to receive the current RTS
+ *           bool * rts_active  : pointer to bool to receive the current RTS
  *                                state. (if NULL, this function will not
  *                                write to this address)
  *
@@ -1896,8 +1896,8 @@ static void MoxaPortFlushData(struct moxa_port *port, int mode)
  *      Syntax:
  *      void MoxaPortLineCtrl(int port, bool dtrState, bool rtsState);
  *           int port           : port number (0 - 127)
- *           bool dtrState      : DTR output state
- *           bool rtsState      : RTS output state
+ *           bool dtr_active    : DTR output state
+ *           bool rts_active    : RTS output state
  *
  *
  *      Function 15:    Setting the flow control of this port.
@@ -2105,24 +2105,24 @@ static int MoxaPortSetTermio(struct moxa_port *port, struct ktermios *termio,
 	return baud;
 }
 
-static int MoxaPortGetLineOut(struct moxa_port *port, bool *dtrState,
-		bool *rtsState)
+static int MoxaPortGetLineOut(struct moxa_port *port, bool *dtr_active,
+		bool *rts_active)
 {
-	if (dtrState)
-		*dtrState = port->lineCtrl & DTR_ON;
-	if (rtsState)
-		*rtsState = port->lineCtrl & RTS_ON;
+	if (dtr_active)
+		*dtr_active = port->lineCtrl & DTR_ON;
+	if (rts_active)
+		*rts_active = port->lineCtrl & RTS_ON;
 
 	return 0;
 }
 
-static void MoxaPortLineCtrl(struct moxa_port *port, bool dtr, bool rts)
+static void MoxaPortLineCtrl(struct moxa_port *port, bool dtr_active, bool rts_active)
 {
 	u8 mode = 0;
 
-	if (dtr)
+	if (dtr_active)
 		mode |= DTR_ON;
-	if (rts)
+	if (rts_active)
 		mode |= RTS_ON;
 	port->lineCtrl = mode;
 	moxafunc(port->tableAddr, FC_LineControl, mode);
-- 
2.30.2