[PATCH RESEND 1/2] serial: core: Make enable

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* [PATCH RESEND 1/2] serial: core: Make enable_ms() optional
@ 2014-07-05  5:54 Alexander Shiyan
  2014-07-05  5:54 ` [PATCH RESEND 2/2] serial: treewide: Remove empty implementations of enable_ms() Alexander Shiyan
  0 siblings, 1 reply; 2+ messages in thread
From: Alexander Shiyan @ 2014-07-05  5:54 UTC (permalink / raw)
  To: linux-serial; +Cc: Greg Kroah-Hartman, Jiri Slaby, Alexander Shiyan

This patch makes enable_ms() optional, so we can eliminate a lot of
empty enable_ms() implementations from driver code.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
---
 drivers/tty/serial/serial_core.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 3ce68f9..8aa6e97 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1051,6 +1051,15 @@ static int uart_do_autoconfig(struct tty_struct *tty,struct uart_state *state)
 	return ret;
 }
 
+static void uart_enable_ms(struct uart_port *uport)
+{
+	/*
+	 * Force modem status interrupts on
+	 */
+	if (uport->ops->enable_ms)
+		uport->ops->enable_ms(uport);
+}
+
 /*
  * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
  * - mask passed in arg for lines of interest
@@ -1074,11 +1083,7 @@ uart_wait_modem_status(struct uart_state *state, unsigned long arg)
 	 */
 	spin_lock_irq(&uport->lock);
 	memcpy(&cprev, &uport->icount, sizeof(struct uart_icount));
-
-	/*
-	 * Force modem status interrupts on
-	 */
-	uport->ops->enable_ms(uport);
+	uart_enable_ms(uport);
 	spin_unlock_irq(&uport->lock);
 
 	add_wait_queue(&port->delta_msr_wait, &wait);
@@ -1509,7 +1514,7 @@ static int uart_carrier_raised(struct tty_port *port)
 	struct uart_port *uport = state->uart_port;
 	int mctrl;
 	spin_lock_irq(&uport->lock);
-	uport->ops->enable_ms(uport);
+	uart_enable_ms(uport);
 	mctrl = uport->ops->get_mctrl(uport);
 	spin_unlock_irq(&uport->lock);
 	if (mctrl & TIOCM_CAR)
-- 
1.8.5.5


^ permalink raw reply related	[flat|nested] 2+ messages in thread

* [PATCH RESEND 2/2] serial: treewide: Remove empty implementations of enable_ms()
  2014-07-05  5:54 [PATCH RESEND 1/2] serial: core: Make enable_ms() optional Alexander Shiyan
@ 2014-07-05  5:54 ` Alexander Shiyan
  0 siblings, 0 replies; 2+ messages in thread
From: Alexander Shiyan @ 2014-07-05  5:54 UTC (permalink / raw)
  To: linux-serial; +Cc: Greg Kroah-Hartman, Jiri Slaby, Alexander Shiyan

This patch removes empty implementations of enable_ms().

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
---
 drivers/tty/serial/21285.c                  |  5 -----
 drivers/tty/serial/altera_jtaguart.c        |  5 -----
 drivers/tty/serial/altera_uart.c            |  5 -----
 drivers/tty/serial/apbuart.c                |  6 ------
 drivers/tty/serial/ar933x_uart.c            |  5 -----
 drivers/tty/serial/arc_uart.c               |  8 --------
 drivers/tty/serial/bfin_sport_uart.c        |  6 ------
 drivers/tty/serial/bfin_uart.c              |  9 ---------
 drivers/tty/serial/clps711x.c               |  1 -
 drivers/tty/serial/cpm_uart/cpm_uart_core.c |  9 ---------
 drivers/tty/serial/dz.c                     |  6 ------
 drivers/tty/serial/efm32-uart.c             |  6 ------
 drivers/tty/serial/fsl_lpuart.c             |  5 -----
 drivers/tty/serial/icom.c                   |  6 ------
 drivers/tty/serial/ioc3_serial.c            |  1 -
 drivers/tty/serial/ioc4_serial.c            |  1 -
 drivers/tty/serial/jsm/jsm_tty.c            |  6 ------
 drivers/tty/serial/lantiq.c                 |  6 ------
 drivers/tty/serial/lpc32xx_hs.c             |  7 -------
 drivers/tty/serial/max310x.c                |  1 -
 drivers/tty/serial/mcf.c                    |  7 -------
 drivers/tty/serial/mpsc.c                   |  5 -----
 drivers/tty/serial/mrst_max3110.c           |  5 -----
 drivers/tty/serial/mux.c                    | 11 -----------
 drivers/tty/serial/mxs-auart.c              |  6 ------
 drivers/tty/serial/nwpserial.c              |  6 ------
 drivers/tty/serial/samsung.c                |  5 -----
 drivers/tty/serial/sc16is7xx.c              |  1 -
 drivers/tty/serial/sccnxp.c                 |  6 ------
 drivers/tty/serial/serial_txx9.c            |  6 ------
 drivers/tty/serial/sh-sci.c                 |  8 --------
 drivers/tty/serial/sn_console.c             | 10 ----------
 drivers/tty/serial/st-asc.c                 |  7 -------
 drivers/tty/serial/sunhv.c                  |  6 ------
 drivers/tty/serial/sunsab.c                 |  7 -------
 drivers/tty/serial/tilegx.c                 | 10 ----------
 drivers/tty/serial/timbuart.c               |  6 ------
 drivers/tty/serial/uartlite.c               |  6 ------
 drivers/tty/serial/ucc_uart.c               | 11 -----------
 drivers/tty/serial/xilinx_uartps.c          |  6 ------
 40 files changed, 239 deletions(-)

diff --git a/drivers/tty/serial/21285.c b/drivers/tty/serial/21285.c
index c7e8b60..9b208bd 100644
--- a/drivers/tty/serial/21285.c
+++ b/drivers/tty/serial/21285.c
@@ -78,10 +78,6 @@ static void serial21285_stop_rx(struct uart_port *port)
 	}
 }
 
-static void serial21285_enable_ms(struct uart_port *port)
-{
-}
-
 static irqreturn_t serial21285_rx_chars(int irq, void *dev_id)
 {
 	struct uart_port *port = dev_id;
@@ -345,7 +341,6 @@ static struct uart_ops serial21285_ops = {
 	.stop_tx	= serial21285_stop_tx,
 	.start_tx	= serial21285_start_tx,
 	.stop_rx	= serial21285_stop_rx,
-	.enable_ms	= serial21285_enable_ms,
 	.break_ctl	= serial21285_break_ctl,
 	.startup	= serial21285_startup,
 	.shutdown	= serial21285_shutdown,
diff --git a/drivers/tty/serial/altera_jtaguart.c b/drivers/tty/serial/altera_jtaguart.c
index 59b3da9..e7d1aaf 100644
--- a/drivers/tty/serial/altera_jtaguart.c
+++ b/drivers/tty/serial/altera_jtaguart.c
@@ -109,10 +109,6 @@ static void altera_jtaguart_break_ctl(struct uart_port *port, int break_state)
 {
 }
 
-static void altera_jtaguart_enable_ms(struct uart_port *port)
-{
-}
-
 static void altera_jtaguart_set_termios(struct uart_port *port,
 					struct ktermios *termios,
 					struct ktermios *old)
@@ -291,7 +287,6 @@ static struct uart_ops altera_jtaguart_ops = {
 	.start_tx	= altera_jtaguart_start_tx,
 	.stop_tx	= altera_jtaguart_stop_tx,
 	.stop_rx	= altera_jtaguart_stop_rx,
-	.enable_ms	= altera_jtaguart_enable_ms,
 	.break_ctl	= altera_jtaguart_break_ctl,
 	.startup	= altera_jtaguart_startup,
 	.shutdown	= altera_jtaguart_shutdown,
diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c
index 3233766..4c1eae9 100644
--- a/drivers/tty/serial/altera_uart.c
+++ b/drivers/tty/serial/altera_uart.c
@@ -163,10 +163,6 @@ static void altera_uart_break_ctl(struct uart_port *port, int break_state)
 	spin_unlock_irqrestore(&port->lock, flags);
 }
 
-static void altera_uart_enable_ms(struct uart_port *port)
-{
-}
-
 static void altera_uart_set_termios(struct uart_port *port,
 				    struct ktermios *termios,
 				    struct ktermios *old)
@@ -415,7 +411,6 @@ static struct uart_ops altera_uart_ops = {
 	.start_tx	= altera_uart_start_tx,
 	.stop_tx	= altera_uart_stop_tx,
 	.stop_rx	= altera_uart_stop_rx,
-	.enable_ms	= altera_uart_enable_ms,
 	.break_ctl	= altera_uart_break_ctl,
 	.startup	= altera_uart_startup,
 	.shutdown	= altera_uart_shutdown,
diff --git a/drivers/tty/serial/apbuart.c b/drivers/tty/serial/apbuart.c
index de11ab8..a34a0ce 100644
--- a/drivers/tty/serial/apbuart.c
+++ b/drivers/tty/serial/apbuart.c
@@ -71,11 +71,6 @@ static void apbuart_stop_rx(struct uart_port *port)
 	UART_PUT_CTRL(port, cr);
 }
 
-static void apbuart_enable_ms(struct uart_port *port)
-{
-	/* No modem status change interrupts for APBUART */
-}
-
 static void apbuart_rx_chars(struct uart_port *port)
 {
 	unsigned int status, ch, rsr, flag;
@@ -337,7 +332,6 @@ static struct uart_ops grlib_apbuart_ops = {
 	.stop_tx = apbuart_stop_tx,
 	.start_tx = apbuart_start_tx,
 	.stop_rx = apbuart_stop_rx,
-	.enable_ms = apbuart_enable_ms,
 	.break_ctl = apbuart_break_ctl,
 	.startup = apbuart_startup,
 	.shutdown = apbuart_shutdown,
diff --git a/drivers/tty/serial/ar933x_uart.c b/drivers/tty/serial/ar933x_uart.c
index acd03af..0be1c45 100644
--- a/drivers/tty/serial/ar933x_uart.c
+++ b/drivers/tty/serial/ar933x_uart.c
@@ -176,10 +176,6 @@ static void ar933x_uart_break_ctl(struct uart_port *port, int break_state)
 	spin_unlock_irqrestore(&up->port.lock, flags);
 }
 
-static void ar933x_uart_enable_ms(struct uart_port *port)
-{
-}
-
 /*
  * baudrate = (clk / (scale + 1)) * (step * (1 / 2^17))
  */
@@ -495,7 +491,6 @@ static struct uart_ops ar933x_uart_ops = {
 	.stop_tx	= ar933x_uart_stop_tx,
 	.start_tx	= ar933x_uart_start_tx,
 	.stop_rx	= ar933x_uart_stop_rx,
-	.enable_ms	= ar933x_uart_enable_ms,
 	.break_ctl	= ar933x_uart_break_ctl,
 	.startup	= ar933x_uart_startup,
 	.shutdown	= ar933x_uart_shutdown,
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index c9f5c9d..643658f 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -340,13 +340,6 @@ static void arc_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
 	/* MCR not present */
 }
 
-/* Enable Modem Status Interrupts */
-
-static void arc_serial_enable_ms(struct uart_port *port)
-{
-	/* MSR not present */
-}
-
 static void arc_serial_break_ctl(struct uart_port *port, int break_state)
 {
 	/* ARC UART doesn't support sending Break signal */
@@ -510,7 +503,6 @@ static struct uart_ops arc_serial_pops = {
 	.stop_tx	= arc_serial_stop_tx,
 	.start_tx	= arc_serial_start_tx,
 	.stop_rx	= arc_serial_stop_rx,
-	.enable_ms	= arc_serial_enable_ms,
 	.break_ctl	= arc_serial_break_ctl,
 	.startup	= arc_serial_startup,
 	.shutdown	= arc_serial_shutdown,
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c
index 4f22970..1174efa 100644
--- a/drivers/tty/serial/bfin_sport_uart.c
+++ b/drivers/tty/serial/bfin_sport_uart.c
@@ -426,11 +426,6 @@ static void sport_stop_rx(struct uart_port *port)
 	SSYNC();
 }
 
-static void sport_enable_ms(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-}
-
 static void sport_break_ctl(struct uart_port *port, int break_state)
 {
 	pr_debug("%s enter\n", __func__);
@@ -587,7 +582,6 @@ struct uart_ops sport_uart_ops = {
 	.stop_tx	= sport_stop_tx,
 	.start_tx	= sport_start_tx,
 	.stop_rx	= sport_stop_rx,
-	.enable_ms	= sport_enable_ms,
 	.break_ctl	= sport_break_ctl,
 	.startup	= sport_startup,
 	.shutdown	= sport_shutdown,
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index ac86a20..dddc081 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -200,14 +200,6 @@ static void bfin_serial_stop_rx(struct uart_port *port)
 	UART_CLEAR_IER(uart, ERBFI);
 }
 
-/*
- * Set the modem control timer to fire immediately.
- */
-static void bfin_serial_enable_ms(struct uart_port *port)
-{
-}
-
-
 #if ANOMALY_05000363 && defined(CONFIG_SERIAL_BFIN_PIO)
 # define UART_GET_ANOMALY_THRESHOLD(uart)    ((uart)->anomaly_threshold)
 # define UART_SET_ANOMALY_THRESHOLD(uart, v) ((uart)->anomaly_threshold = (v))
@@ -1014,7 +1006,6 @@ static struct uart_ops bfin_serial_pops = {
 	.stop_tx	= bfin_serial_stop_tx,
 	.start_tx	= bfin_serial_start_tx,
 	.stop_rx	= bfin_serial_stop_rx,
-	.enable_ms	= bfin_serial_enable_ms,
 	.break_ctl	= bfin_serial_break_ctl,
 	.startup	= bfin_serial_startup,
 	.shutdown	= bfin_serial_shutdown,
diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c
index 14aaea0..f5b4c3d 100644
--- a/drivers/tty/serial/clps711x.c
+++ b/drivers/tty/serial/clps711x.c
@@ -352,7 +352,6 @@ static const struct uart_ops uart_clps711x_ops = {
 	.stop_tx	= uart_clps711x_stop_tx,
 	.start_tx	= uart_clps711x_start_tx,
 	.stop_rx	= uart_clps711x_nop_void,
-	.enable_ms	= uart_clps711x_nop_void,
 	.break_ctl	= uart_clps711x_break_ctl,
 	.set_ldisc	= uart_clps711x_set_ldisc,
 	.startup	= uart_clps711x_startup,
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index aa60e6d..533852e 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -202,14 +202,6 @@ static void cpm_uart_stop_rx(struct uart_port *port)
 }
 
 /*
- * Enable Modem status interrupts
- */
-static void cpm_uart_enable_ms(struct uart_port *port)
-{
-	pr_debug("CPM uart[%d]:enable ms\n", port->line);
-}
-
-/*
  * Generate a break.
  */
 static void cpm_uart_break_ctl(struct uart_port *port, int break_state)
@@ -1122,7 +1114,6 @@ static struct uart_ops cpm_uart_pops = {
 	.stop_tx	= cpm_uart_stop_tx,
 	.start_tx	= cpm_uart_start_tx,
 	.stop_rx	= cpm_uart_stop_rx,
-	.enable_ms	= cpm_uart_enable_ms,
 	.break_ctl	= cpm_uart_break_ctl,
 	.startup	= cpm_uart_startup,
 	.shutdown	= cpm_uart_shutdown,
diff --git a/drivers/tty/serial/dz.c b/drivers/tty/serial/dz.c
index cdbbc78..c121f16 100644
--- a/drivers/tty/serial/dz.c
+++ b/drivers/tty/serial/dz.c
@@ -151,11 +151,6 @@ static void dz_stop_rx(struct uart_port *uport)
 	dz_out(dport, DZ_LPR, dport->cflag);
 }
 
-static void dz_enable_ms(struct uart_port *uport)
-{
-	/* nothing to do */
-}
-
 /*
  * ------------------------------------------------------------
  *
@@ -751,7 +746,6 @@ static struct uart_ops dz_ops = {
 	.stop_tx	= dz_stop_tx,
 	.start_tx	= dz_start_tx,
 	.stop_rx	= dz_stop_rx,
-	.enable_ms	= dz_enable_ms,
 	.break_ctl	= dz_break_ctl,
 	.startup	= dz_startup,
 	.shutdown	= dz_shutdown,
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
index 3b0ee9a..7baa349 100644
--- a/drivers/tty/serial/efm32-uart.c
+++ b/drivers/tty/serial/efm32-uart.c
@@ -185,11 +185,6 @@ static void efm32_uart_stop_rx(struct uart_port *port)
 	efm32_uart_write32(efm_port, UARTn_CMD_RXDIS, UARTn_CMD);
 }
 
-static void efm32_uart_enable_ms(struct uart_port *port)
-{
-	/* no handshake lines, no modem status interrupts */
-}
-
 static void efm32_uart_break_ctl(struct uart_port *port, int ctl)
 {
 	/* not possible without fiddling with gpios */
@@ -499,7 +494,6 @@ static struct uart_ops efm32_uart_pops = {
 	.stop_tx = efm32_uart_stop_tx,
 	.start_tx = efm32_uart_start_tx,
 	.stop_rx = efm32_uart_stop_rx,
-	.enable_ms = efm32_uart_enable_ms,
 	.break_ctl = efm32_uart_break_ctl,
 	.startup = efm32_uart_startup,
 	.shutdown = efm32_uart_shutdown,
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 49385c8..c5ad567 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -179,10 +179,6 @@ static void lpuart_stop_rx(struct uart_port *port)
 	writeb(temp & ~UARTCR2_RE, port->membase + UARTCR2);
 }
 
-static void lpuart_enable_ms(struct uart_port *port)
-{
-}
-
 static void lpuart_copy_rx_to_tty(struct lpuart_port *sport,
 		struct tty_port *tty, int count)
 {
@@ -996,7 +992,6 @@ static struct uart_ops lpuart_pops = {
 	.stop_tx	= lpuart_stop_tx,
 	.start_tx	= lpuart_start_tx,
 	.stop_rx	= lpuart_stop_rx,
-	.enable_ms	= lpuart_enable_ms,
 	.break_ctl	= lpuart_break_ctl,
 	.startup	= lpuart_startup,
 	.shutdown	= lpuart_shutdown,
diff --git a/drivers/tty/serial/icom.c b/drivers/tty/serial/icom.c
index 6742380..d4620fe 100644
--- a/drivers/tty/serial/icom.c
+++ b/drivers/tty/serial/icom.c
@@ -1052,11 +1052,6 @@ static void icom_stop_rx(struct uart_port *port)
 	writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
 }
 
-static void icom_enable_ms(struct uart_port *port)
-{
-	/* no-op */
-}
-
 static void icom_break(struct uart_port *port, int break_state)
 {
 	unsigned char cmdReg;
@@ -1300,7 +1295,6 @@ static struct uart_ops icom_ops = {
 	.start_tx = icom_start_tx,
 	.send_xchar = icom_send_xchar,
 	.stop_rx = icom_stop_rx,
-	.enable_ms = icom_enable_ms,
 	.break_ctl = icom_break,
 	.startup = icom_open,
 	.shutdown = icom_close,
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
index 6e4c715..abd7ea2 100644
--- a/drivers/tty/serial/ioc3_serial.c
+++ b/drivers/tty/serial/ioc3_serial.c
@@ -1880,7 +1880,6 @@ static struct uart_ops ioc3_ops = {
 	.stop_tx = ic3_stop_tx,
 	.start_tx = ic3_start_tx,
 	.stop_rx = ic3_stop_rx,
-	.enable_ms = null_void_function,
 	.break_ctl = ic3_break_ctl,
 	.startup = ic3_startup,
 	.shutdown = ic3_shutdown,
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index 1274499..aa28209 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -2597,7 +2597,6 @@ static struct uart_ops ioc4_ops = {
 	.stop_tx	= ic4_stop_tx,
 	.start_tx	= ic4_start_tx,
 	.stop_rx	= null_void_function,
-	.enable_ms	= null_void_function,
 	.break_ctl	= ic4_break_ctl,
 	.startup	= ic4_startup,
 	.shutdown	= ic4_shutdown,
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index 27bb750..3e5c156 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -177,11 +177,6 @@ static void jsm_tty_stop_rx(struct uart_port *port)
 	channel->ch_bd->bd_ops->disable_receiver(channel);
 }
 
-static void jsm_tty_enable_ms(struct uart_port *port)
-{
-	/* Nothing needed */
-}
-
 static void jsm_tty_break(struct uart_port *port, int break_state)
 {
 	unsigned long lock_flags;
@@ -354,7 +349,6 @@ static struct uart_ops jsm_ops = {
 	.start_tx	= jsm_tty_start_tx,
 	.send_xchar	= jsm_tty_send_xchar,
 	.stop_rx	= jsm_tty_stop_rx,
-	.enable_ms	= jsm_tty_enable_ms,
 	.break_ctl	= jsm_tty_break,
 	.startup	= jsm_tty_open,
 	.shutdown	= jsm_tty_close,
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 88d01e0..ea030830 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -154,11 +154,6 @@ lqasc_stop_rx(struct uart_port *port)
 	ltq_w32(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);
 }
 
-static void
-lqasc_enable_ms(struct uart_port *port)
-{
-}
-
 static int
 lqasc_rx_chars(struct uart_port *port)
 {
@@ -568,7 +563,6 @@ static struct uart_ops lqasc_pops = {
 	.stop_tx =	lqasc_stop_tx,
 	.start_tx =	lqasc_start_tx,
 	.stop_rx =	lqasc_stop_rx,
-	.enable_ms =	lqasc_enable_ms,
 	.break_ctl =	lqasc_break_ctl,
 	.startup =	lqasc_startup,
 	.shutdown =	lqasc_shutdown,
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
index 701644f..6f0f892 100644
--- a/drivers/tty/serial/lpc32xx_hs.c
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -427,12 +427,6 @@ static void serial_lpc32xx_stop_rx(struct uart_port *port)
 		LPC32XX_HSU_FE_INT), LPC32XX_HSUART_IIR(port->membase));
 }
 
-/* port->lock held by caller.  */
-static void serial_lpc32xx_enable_ms(struct uart_port *port)
-{
-	/* Modem status is not supported */
-}
-
 /* port->lock is not held.  */
 static void serial_lpc32xx_break_ctl(struct uart_port *port,
 				     int break_state)
@@ -658,7 +652,6 @@ static struct uart_ops serial_lpc32xx_pops = {
 	.stop_tx	= serial_lpc32xx_stop_tx,
 	.start_tx	= serial_lpc32xx_start_tx,
 	.stop_rx	= serial_lpc32xx_stop_rx,
-	.enable_ms	= serial_lpc32xx_enable_ms,
 	.break_ctl	= serial_lpc32xx_break_ctl,
 	.startup	= serial_lpc32xx_startup,
 	.shutdown	= serial_lpc32xx_shutdown,
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index ba285cd..82573dc 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -1008,7 +1008,6 @@ static const struct uart_ops max310x_ops = {
 	.stop_tx	= max310x_null_void,
 	.start_tx	= max310x_start_tx,
 	.stop_rx	= max310x_null_void,
-	.enable_ms	= max310x_null_void,
 	.break_ctl	= max310x_break_ctl,
 	.startup	= max310x_startup,
 	.shutdown	= max310x_shutdown,
diff --git a/drivers/tty/serial/mcf.c b/drivers/tty/serial/mcf.c
index a6f0857..fab4d6a 100644
--- a/drivers/tty/serial/mcf.c
+++ b/drivers/tty/serial/mcf.c
@@ -150,12 +150,6 @@ static void mcf_break_ctl(struct uart_port *port, int break_state)
 
 /****************************************************************************/
 
-static void mcf_enable_ms(struct uart_port *port)
-{
-}
-
-/****************************************************************************/
-
 static int mcf_startup(struct uart_port *port)
 {
 	struct mcf_uart *pp = container_of(port, struct mcf_uart, port);
@@ -507,7 +501,6 @@ static const struct uart_ops mcf_uart_ops = {
 	.start_tx	= mcf_start_tx,
 	.stop_tx	= mcf_stop_tx,
 	.stop_rx	= mcf_stop_rx,
-	.enable_ms	= mcf_enable_ms,
 	.break_ctl	= mcf_break_ctl,
 	.startup	= mcf_startup,
 	.shutdown	= mcf_shutdown,
diff --git a/drivers/tty/serial/mpsc.c b/drivers/tty/serial/mpsc.c
index 759c6a6..ae49856 100644
--- a/drivers/tty/serial/mpsc.c
+++ b/drivers/tty/serial/mpsc.c
@@ -1336,10 +1336,6 @@ static void mpsc_stop_rx(struct uart_port *port)
 	mpsc_sdma_cmd(pi, SDMA_SDCM_AR);
 }
 
-static void mpsc_enable_ms(struct uart_port *port)
-{
-}
-
 static void mpsc_break_ctl(struct uart_port *port, int ctl)
 {
 	struct mpsc_port_info *pi = (struct mpsc_port_info *)port;
@@ -1674,7 +1670,6 @@ static struct uart_ops mpsc_pops = {
 	.stop_tx	= mpsc_stop_tx,
 	.start_tx	= mpsc_start_tx,
 	.stop_rx	= mpsc_stop_rx,
-	.enable_ms	= mpsc_enable_ms,
 	.break_ctl	= mpsc_break_ctl,
 	.startup	= mpsc_startup,
 	.shutdown	= mpsc_shutdown,
diff --git a/drivers/tty/serial/mrst_max3110.c b/drivers/tty/serial/mrst_max3110.c
index db0448a..1504a14 100644
--- a/drivers/tty/serial/mrst_max3110.c
+++ b/drivers/tty/serial/mrst_max3110.c
@@ -698,10 +698,6 @@ static void serial_m3110_pm(struct uart_port *port, unsigned int state,
 {
 }
 
-static void serial_m3110_enable_ms(struct uart_port *port)
-{
-}
-
 static struct uart_ops serial_m3110_ops = {
 	.tx_empty	= serial_m3110_tx_empty,
 	.set_mctrl	= serial_m3110_set_mctrl,
@@ -709,7 +705,6 @@ static struct uart_ops serial_m3110_ops = {
 	.stop_tx	= serial_m3110_stop_tx,
 	.start_tx	= serial_m3110_start_tx,
 	.stop_rx	= serial_m3110_stop_rx,
-	.enable_ms	= serial_m3110_enable_ms,
 	.break_ctl	= serial_m3110_break_ctl,
 	.startup	= serial_m3110_startup,
 	.shutdown	= serial_m3110_shutdown,
diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index be127d0..dd26511 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -169,16 +169,6 @@ static void mux_stop_rx(struct uart_port *port)
 }
 
 /**
- * mux_enable_ms - Enable modum status interrupts.
- * @port: Ptr to the uart_port.
- *
- * The Serial Mux does not support this function.
- */
-static void mux_enable_ms(struct uart_port *port)
-{
-}
-
-/**
  * mux_break_ctl - Control the transmitssion of a break signal.
  * @port: Ptr to the uart_port.
  * @break_state: Raise/Lower the break signal.
@@ -449,7 +439,6 @@ static struct uart_ops mux_pops = {
 	.stop_tx =		mux_stop_tx,
 	.start_tx =		mux_start_tx,
 	.stop_rx =		mux_stop_rx,
-	.enable_ms =		mux_enable_ms,
 	.break_ctl =		mux_break_ctl,
 	.startup =		mux_startup,
 	.shutdown =		mux_shutdown,
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 86de447..b5c3292 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -815,17 +815,11 @@ static void mxs_auart_break_ctl(struct uart_port *u, int ctl)
 			     u->membase + AUART_LINECTRL_CLR);
 }
 
-static void mxs_auart_enable_ms(struct uart_port *port)
-{
-	/* just empty */
-}
-
 static struct uart_ops mxs_auart_ops = {
 	.tx_empty       = mxs_auart_tx_empty,
 	.start_tx       = mxs_auart_start_tx,
 	.stop_tx	= mxs_auart_stop_tx,
 	.stop_rx	= mxs_auart_stop_rx,
-	.enable_ms      = mxs_auart_enable_ms,
 	.break_ctl      = mxs_auart_break_ctl,
 	.set_mctrl	= mxs_auart_set_mctrl,
 	.get_mctrl      = mxs_auart_get_mctrl,
diff --git a/drivers/tty/serial/nwpserial.c b/drivers/tty/serial/nwpserial.c
index 693bc6c..c06366b 100644
--- a/drivers/tty/serial/nwpserial.c
+++ b/drivers/tty/serial/nwpserial.c
@@ -240,11 +240,6 @@ static void nwpserial_break_ctl(struct uart_port *port, int ctl)
 	/* N/A */
 }
 
-static void nwpserial_enable_ms(struct uart_port *port)
-{
-	/* N/A */
-}
-
 static void nwpserial_stop_rx(struct uart_port *port)
 {
 	struct nwpserial_port *up;
@@ -315,7 +310,6 @@ static struct uart_ops nwpserial_pops = {
 	.stop_tx      = nwpserial_stop_tx,
 	.start_tx     = nwpserial_start_tx,
 	.stop_rx      = nwpserial_stop_rx,
-	.enable_ms    = nwpserial_enable_ms,
 	.break_ctl    = nwpserial_break_ctl,
 	.startup      = nwpserial_startup,
 	.shutdown     = nwpserial_shutdown,
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 36c7747..1ebb410 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -203,10 +203,6 @@ static void s3c24xx_serial_stop_rx(struct uart_port *port)
 	}
 }
 
-static void s3c24xx_serial_enable_ms(struct uart_port *port)
-{
-}
-
 static inline struct s3c24xx_uart_info *s3c24xx_port_to_info(struct uart_port *port)
 {
 	return to_ourport(port)->info;
@@ -952,7 +948,6 @@ static struct uart_ops s3c24xx_serial_ops = {
 	.stop_tx	= s3c24xx_serial_stop_tx,
 	.start_tx	= s3c24xx_serial_start_tx,
 	.stop_rx	= s3c24xx_serial_stop_rx,
-	.enable_ms	= s3c24xx_serial_enable_ms,
 	.break_ctl	= s3c24xx_serial_break_ctl,
 	.startup	= s3c24xx_serial_startup,
 	.shutdown	= s3c24xx_serial_shutdown,
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 1b6a77c..914825e 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -991,7 +991,6 @@ static const struct uart_ops sc16is7xx_ops = {
 	.stop_tx	= sc16is7xx_stop_tx,
 	.start_tx	= sc16is7xx_start_tx,
 	.stop_rx	= sc16is7xx_stop_rx,
-	.enable_ms	= sc16is7xx_null_void,
 	.break_ctl	= sc16is7xx_break_ctl,
 	.startup	= sc16is7xx_startup,
 	.shutdown	= sc16is7xx_shutdown,
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index e84b6a3..75850f7 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -533,11 +533,6 @@ static unsigned int sccnxp_tx_empty(struct uart_port *port)
 	return (val & SR_TXEMT) ? TIOCSER_TEMT : 0;
 }
 
-static void sccnxp_enable_ms(struct uart_port *port)
-{
-	/* Do nothing */
-}
-
 static void sccnxp_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
 	struct sccnxp_port *s = dev_get_drvdata(port->dev);
@@ -790,7 +785,6 @@ static const struct uart_ops sccnxp_ops = {
 	.stop_tx	= sccnxp_stop_tx,
 	.start_tx	= sccnxp_start_tx,
 	.stop_rx	= sccnxp_stop_rx,
-	.enable_ms	= sccnxp_enable_ms,
 	.break_ctl	= sccnxp_break_ctl,
 	.startup	= sccnxp_startup,
 	.shutdown	= sccnxp_shutdown,
diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c
index ea85460..29f5232 100644
--- a/drivers/tty/serial/serial_txx9.c
+++ b/drivers/tty/serial/serial_txx9.c
@@ -244,11 +244,6 @@ static void serial_txx9_stop_rx(struct uart_port *port)
 	up->port.read_status_mask &= ~TXX9_SIDISR_RDIS;
 }
 
-static void serial_txx9_enable_ms(struct uart_port *port)
-{
-	/* TXX9-SIO can not control DTR... */
-}
-
 static void serial_txx9_initialize(struct uart_port *port)
 {
 	struct uart_txx9_port *up = to_uart_txx9_port(port);
@@ -858,7 +853,6 @@ static struct uart_ops serial_txx9_pops = {
 	.stop_tx	= serial_txx9_stop_tx,
 	.start_tx	= serial_txx9_start_tx,
 	.stop_rx	= serial_txx9_stop_rx,
-	.enable_ms	= serial_txx9_enable_ms,
 	.break_ctl	= serial_txx9_break_ctl,
 	.startup	= serial_txx9_startup,
 	.shutdown	= serial_txx9_shutdown,
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 88236da..26dad3e 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1560,13 +1560,6 @@ static void sci_stop_rx(struct uart_port *port)
 	serial_port_out(port, SCSCR, ctrl);
 }
 
-static void sci_enable_ms(struct uart_port *port)
-{
-	/*
-	 * Not supported by hardware, always a nop.
-	 */
-}
-
 static void sci_break_ctl(struct uart_port *port, int break_state)
 {
 	struct sci_port *s = to_sci_port(port);
@@ -2080,7 +2073,6 @@ static struct uart_ops sci_uart_ops = {
 	.start_tx	= sci_start_tx,
 	.stop_tx	= sci_stop_tx,
 	.stop_rx	= sci_stop_rx,
-	.enable_ms	= sci_enable_ms,
 	.break_ctl	= sci_break_ctl,
 	.startup	= sci_startup,
 	.shutdown	= sci_shutdown,
diff --git a/drivers/tty/serial/sn_console.c b/drivers/tty/serial/sn_console.c
index f51ffdc..33e94e5 100644
--- a/drivers/tty/serial/sn_console.c
+++ b/drivers/tty/serial/sn_console.c
@@ -275,15 +275,6 @@ static void snp_release_port(struct uart_port *port)
 }
 
 /**
- * snp_enable_ms - Force modem status interrupts on - no-op for us
- * @port: Port to operate on - we ignore - no-op function
- *
- */
-static void snp_enable_ms(struct uart_port *port)
-{
-}
-
-/**
  * snp_shutdown - shut down the port - free irq and disable - no-op for us
  * @port: Port to shut down - we ignore
  *
@@ -396,7 +387,6 @@ static struct uart_ops sn_console_ops = {
 	.stop_tx = snp_stop_tx,
 	.start_tx = snp_start_tx,
 	.stop_rx = snp_stop_rx,
-	.enable_ms = snp_enable_ms,
 	.break_ctl = snp_break_ctl,
 	.startup = snp_startup,
 	.shutdown = snp_shutdown,
diff --git a/drivers/tty/serial/st-asc.c b/drivers/tty/serial/st-asc.c
index f48b1cc..2bee4fb 100644
--- a/drivers/tty/serial/st-asc.c
+++ b/drivers/tty/serial/st-asc.c
@@ -411,12 +411,6 @@ static void asc_stop_rx(struct uart_port *port)
 	asc_disable_rx_interrupts(port);
 }
 
-/* Force modem status interrupts on */
-static void asc_enable_ms(struct uart_port *port)
-{
-	/* Nothing here yet .. */
-}
-
 /* Handle breaks - ignored by us */
 static void asc_break_ctl(struct uart_port *port, int break_state)
 {
@@ -644,7 +638,6 @@ static struct uart_ops asc_uart_ops = {
 	.start_tx	= asc_start_tx,
 	.stop_tx	= asc_stop_tx,
 	.stop_rx	= asc_stop_rx,
-	.enable_ms	= asc_enable_ms,
 	.break_ctl	= asc_break_ctl,
 	.startup	= asc_startup,
 	.shutdown	= asc_shutdown,
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index dc697ce..20521db 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -285,11 +285,6 @@ static void sunhv_stop_rx(struct uart_port *port)
 {
 }
 
-/* port->lock held by caller.  */
-static void sunhv_enable_ms(struct uart_port *port)
-{
-}
-
 /* port->lock is not held.  */
 static void sunhv_break_ctl(struct uart_port *port, int break_state)
 {
@@ -379,7 +374,6 @@ static struct uart_ops sunhv_pops = {
 	.start_tx	= sunhv_start_tx,
 	.send_xchar	= sunhv_send_xchar,
 	.stop_rx	= sunhv_stop_rx,
-	.enable_ms	= sunhv_enable_ms,
 	.break_ctl	= sunhv_break_ctl,
 	.startup	= sunhv_startup,
 	.shutdown	= sunhv_shutdown,
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c
index 80a58ec..c9751d8 100644
--- a/drivers/tty/serial/sunsab.c
+++ b/drivers/tty/serial/sunsab.c
@@ -473,12 +473,6 @@ static void sunsab_stop_rx(struct uart_port *port)
 	writeb(up->interrupt_mask1, &up->regs->w.imr0);
 }
 
-/* port->lock held by caller.  */
-static void sunsab_enable_ms(struct uart_port *port)
-{
-	/* For now we always receive these interrupts.  */
-}
-
 /* port->lock is not held.  */
 static void sunsab_break_ctl(struct uart_port *port, int break_state)
 {
@@ -807,7 +801,6 @@ static struct uart_ops sunsab_pops = {
 	.start_tx	= sunsab_start_tx,
 	.send_xchar	= sunsab_send_xchar,
 	.stop_rx	= sunsab_stop_rx,
-	.enable_ms	= sunsab_enable_ms,
 	.break_ctl	= sunsab_break_ctl,
 	.startup	= sunsab_startup,
 	.shutdown	= sunsab_shutdown,
diff --git a/drivers/tty/serial/tilegx.c b/drivers/tty/serial/tilegx.c
index 613ccf0..453215f 100644
--- a/drivers/tty/serial/tilegx.c
+++ b/drivers/tty/serial/tilegx.c
@@ -314,15 +314,6 @@ static void tilegx_stop_rx(struct uart_port *port)
 	mutex_unlock(&tile_uart->mutex);
 }
 
-
-/*
- * Enable modem status interrupts.
- */
-static void tilegx_enable_ms(struct uart_port *port)
-{
-	/* N/A */
-}
-
 /*
  * Control the transmission of a break signal.
  */
@@ -614,7 +605,6 @@ static const struct uart_ops tilegx_ops = {
 	.stop_tx	= tilegx_stop_tx,
 	.start_tx	= tilegx_start_tx,
 	.stop_rx	= tilegx_stop_rx,
-	.enable_ms	= tilegx_enable_ms,
 	.break_ctl	= tilegx_break_ctl,
 	.startup	= tilegx_startup,
 	.shutdown	= tilegx_shutdown,
diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c
index f87097a..0d11d50 100644
--- a/drivers/tty/serial/timbuart.c
+++ b/drivers/tty/serial/timbuart.c
@@ -244,11 +244,6 @@ static void timbuart_mctrl_check(struct uart_port *port, u32 isr, u32 *ier)
 	*ier |= CTS_DELTA;
 }
 
-static void timbuart_enable_ms(struct uart_port *port)
-{
-	/* N/A */
-}
-
 static void timbuart_break_ctl(struct uart_port *port, int ctl)
 {
 	/* N/A */
@@ -405,7 +400,6 @@ static struct uart_ops timbuart_ops = {
 	.start_tx = timbuart_start_tx,
 	.flush_buffer = timbuart_flush_buffer,
 	.stop_rx = timbuart_stop_rx,
-	.enable_ms = timbuart_enable_ms,
 	.break_ctl = timbuart_break_ctl,
 	.startup = timbuart_startup,
 	.shutdown = timbuart_shutdown,
diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index dce27f3..9fc22f4 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -250,11 +250,6 @@ static void ulite_stop_rx(struct uart_port *port)
 		| ULITE_STATUS_FRAME | ULITE_STATUS_OVERRUN;
 }
 
-static void ulite_enable_ms(struct uart_port *port)
-{
-	/* N/A */
-}
-
 static void ulite_break_ctl(struct uart_port *port, int ctl)
 {
 	/* N/A */
@@ -395,7 +390,6 @@ static struct uart_ops ulite_ops = {
 	.stop_tx	= ulite_stop_tx,
 	.start_tx	= ulite_start_tx,
 	.stop_rx	= ulite_stop_rx,
-	.enable_ms	= ulite_enable_ms,
 	.break_ctl	= ulite_break_ctl,
 	.startup	= ulite_startup,
 	.shutdown	= ulite_shutdown,
diff --git a/drivers/tty/serial/ucc_uart.c b/drivers/tty/serial/ucc_uart.c
index 1c52074..c107a0f 100644
--- a/drivers/tty/serial/ucc_uart.c
+++ b/drivers/tty/serial/ucc_uart.c
@@ -435,16 +435,6 @@ static void qe_uart_stop_rx(struct uart_port *port)
 	clrbits16(&qe_port->uccp->uccm, UCC_UART_UCCE_RX);
 }
 
-/*
- * Enable status change interrupts
- *
- * We don't support status change interrupts, but we need to define this
- * function otherwise the kernel will panic.
- */
-static void qe_uart_enable_ms(struct uart_port *port)
-{
-}
-
 /* Start or stop sending  break signal
  *
  * This function controls the sending of a break signal.  If break_state=1,
@@ -1102,7 +1092,6 @@ static struct uart_ops qe_uart_pops = {
 	.stop_tx	= qe_uart_stop_tx,
 	.start_tx       = qe_uart_start_tx,
 	.stop_rx	= qe_uart_stop_rx,
-	.enable_ms      = qe_uart_enable_ms,
 	.break_ctl      = qe_uart_break_ctl,
 	.startup	= qe_uart_startup,
 	.shutdown       = qe_uart_shutdown,
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 8809775..01951d2 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -918,11 +918,6 @@ static void cdns_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
 	/* N/A */
 }
 
-static void cdns_uart_enable_ms(struct uart_port *port)
-{
-	/* N/A */
-}
-
 #ifdef CONFIG_CONSOLE_POLL
 static int cdns_uart_poll_get_char(struct uart_port *port)
 {
@@ -974,7 +969,6 @@ static void cdns_uart_poll_put_char(struct uart_port *port, unsigned char c)
 static struct uart_ops cdns_uart_ops = {
 	.set_mctrl	= cdns_uart_set_mctrl,
 	.get_mctrl	= cdns_uart_get_mctrl,
-	.enable_ms	= cdns_uart_enable_ms,
 	.start_tx	= cdns_uart_start_tx,
 	.stop_tx	= cdns_uart_stop_tx,
 	.stop_rx	= cdns_uart_stop_rx,
-- 
1.8.5.5


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2014-07-05  5:54 [PATCH RESEND 1/2] serial: core: Make enable_ms() optional Alexander Shiyan
2014-07-05  5:54 ` [PATCH RESEND 2/2] serial: treewide: Remove empty implementations of enable_ms() Alexander Shiyan

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