Merge HEAD from master.kernel.org:/home/rmk/linux-2.6-serial

37 files changed, 176 insertions, 372 deletions

diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index d568991ac6b..8666171e187 100644
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@@ -57,6 +57,7 @@
 #include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/delay.h>
+#include <linux/serial_8250.h>
 #include "smapi.h"
 #include "mwavedd.h"
 #include "3780i.h"
@@ -410,8 +411,8 @@ static ssize_t mwave_write(struct file *file, const char __user *buf,
 
 static int register_serial_portandirq(unsigned int port, int irq)
 {
-	struct serial_struct serial;
-
+	struct uart_port uart;
+	
 	switch ( port ) {
 		case 0x3f8:
 		case 0x2f8:
@@ -442,12 +443,14 @@ static int register_serial_portandirq(unsigned int port, int irq)
 	} /* switch */
 	/* irq is okay */
 
-	memset(&serial, 0, sizeof(serial));
-	serial.port = port;
-	serial.irq = irq;
-	serial.flags = ASYNC_SHARE_IRQ;
-
-	return register_serial(&serial);
+	memset(&uart, 0, sizeof(struct uart_port));
+	
+	uart.uartclk =  1843200;
+	uart.iobase = port;
+	uart.irq = irq;
+	uart.iotype = UPIO_PORT;
+	uart.flags =  UPF_SHARE_IRQ;
+	return serial8250_register_port(&uart);
 }
 
 
@@ -523,7 +526,7 @@ static void mwave_exit(void)
 #endif
 
 	if ( pDrvData->sLine >= 0 ) {
-		unregister_serial(pDrvData->sLine);
+		serial8250_unregister_port(pDrvData->sLine);
 	}
 	if (pDrvData->bMwaveDevRegistered) {
 		misc_deregister(&mwave_misc_dev);
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 7fc692a8f5b..dea6589d153 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -6,7 +6,7 @@ menu "Misc devices"
 
 config IBM_ASM
 	tristate "Device driver for IBM RSA service processor"
-	depends on X86 && PCI && EXPERIMENTAL
+	depends on X86 && PCI && EXPERIMENTAL && BROKEN
 	---help---
 	  This option enables device driver support for in-band access to the
 	  IBM RSA (Condor) service processor in eServer xSeries systems.
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index e0239a10d32..7d8bcb38797 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -447,7 +447,7 @@ config NET_SB1250_MAC
 
 config SGI_IOC3_ETH
 	bool "SGI IOC3 Ethernet"
-	depends on NET_ETHERNET && PCI && SGI_IP27
+	depends on NET_ETHERNET && PCI && SGI_IP27 && BROKEN
 	select CRC32
 	select MII
 	help
diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c
index 0b10169961e..aec39fb261c 100644
--- a/drivers/serial/21285.c
+++ b/drivers/serial/21285.c
@@ -58,8 +58,7 @@ static const char serial21285_name[] = "Footbridge UART";
  *  int((BAUD_BASE - (baud >> 1)) / baud)
  */
 
-static void
-serial21285_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void serial21285_stop_tx(struct uart_port *port)
 {
 	if (tx_enabled(port)) {
 		disable_irq(IRQ_CONTX);
@@ -67,8 +66,7 @@ serial21285_stop_tx(struct uart_port *port, unsigned int tty_stop)
 	}
 }
 
-static void
-serial21285_start_tx(struct uart_port *port, unsigned int tty_start)
+static void serial21285_start_tx(struct uart_port *port)
 {
 	if (!tx_enabled(port)) {
 		enable_irq(IRQ_CONTX);
@@ -148,7 +146,7 @@ static irqreturn_t serial21285_tx_chars(int irq, void *dev_id, struct pt_regs *r
 		goto out;
 	}
 	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		serial21285_stop_tx(port, 0);
+		serial21285_stop_tx(port);
 		goto out;
 	}
 
@@ -164,7 +162,7 @@ static irqreturn_t serial21285_tx_chars(int irq, void *dev_id, struct pt_regs *r
 		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
-		serial21285_stop_tx(port, 0);
+		serial21285_stop_tx(port);
 
  out:
 	return IRQ_HANDLED;
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 7e8fc7c1d4c..30a0a3d1014 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1001,7 +1001,7 @@ static inline void __stop_tx(struct uart_8250_port *p)
 	}
 }
 
-static void serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void serial8250_stop_tx(struct uart_port *port)
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)port;
 
@@ -1018,7 +1018,7 @@ static void serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
 
 static void transmit_chars(struct uart_8250_port *up);
 
-static void serial8250_start_tx(struct uart_port *port, unsigned int tty_start)
+static void serial8250_start_tx(struct uart_port *port)
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)port;
 
@@ -1158,7 +1158,11 @@ static _INLINE_ void transmit_chars(struct uart_8250_port *up)
 		up->port.x_char = 0;
 		return;
 	}
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
+	if (uart_tx_stopped(&up->port)) {
+		serial8250_stop_tx(&up->port);
+		return;
+	}
+	if (uart_circ_empty(xmit)) {
 		__stop_tx(up);
 		return;
 	}
@@ -2586,82 +2590,3 @@ module_param_array(probe_rsa, ulong, &probe_rsa_count, 0444);
 MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA");
 #endif
 MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR);
-
-/**
- *	register_serial - configure a 16x50 serial port at runtime
- *	@req: request structure
- *
- *	Configure the serial port specified by the request. If the
- *	port exists and is in use an error is returned. If the port
- *	is not currently in the table it is added.
- *
- *	The port is then probed and if necessary the IRQ is autodetected
- *	If this fails an error is returned.
- *
- *	On success the port is ready to use and the line number is returned.
- *
- *	Note: this function is deprecated - use serial8250_register_port
- *	instead.
- */
-int register_serial(struct serial_struct *req)
-{
-	struct uart_port port;
-
-	port.iobase   = req->port;
-	port.membase  = req->iomem_base;
-	port.irq      = req->irq;
-	port.uartclk  = req->baud_base * 16;
-	port.fifosize = req->xmit_fifo_size;
-	port.regshift = req->iomem_reg_shift;
-	port.iotype   = req->io_type;
-	port.flags    = req->flags | UPF_BOOT_AUTOCONF;
-	port.mapbase  = req->iomap_base;
-	port.dev      = NULL;
-
-	if (share_irqs)
-		port.flags |= UPF_SHARE_IRQ;
-
-	if (HIGH_BITS_OFFSET)
-		port.iobase |= (long) req->port_high << HIGH_BITS_OFFSET;
-
-	/*
-	 * If a clock rate wasn't specified by the low level driver, then
-	 * default to the standard clock rate.  This should be 115200 (*16)
-	 * and should not depend on the architecture's BASE_BAUD definition.
-	 * However, since this API will be deprecated, it's probably a
-	 * better idea to convert the drivers to use the new API
-	 * (serial8250_register_port and serial8250_unregister_port).
-	 */
-	if (port.uartclk == 0) {
-		printk(KERN_WARNING
-		       "Serial: registering port at [%08x,%08lx,%p] irq %d with zero baud_base\n",
-		       port.iobase, port.mapbase, port.membase, port.irq);
-		printk(KERN_WARNING "Serial: see %s:%d for more information\n",
-		       __FILE__, __LINE__);
-		dump_stack();
-
-		/*
-		 * Fix it up for now, but this is only a temporary measure.
-		 */
-		port.uartclk = BASE_BAUD * 16;
-	}
-
-	return serial8250_register_port(&port);
-}
-EXPORT_SYMBOL(register_serial);
-
-/**
- *	unregister_serial - remove a 16x50 serial port at runtime
- *	@line: serial line number
- *
- *	Remove one serial port.  This may not be called from interrupt
- *	context.  We hand the port back to our local PM control.
- *
- *	Note: this function is deprecated - use serial8250_unregister_port
- *	instead.
- */
-void unregister_serial(int line)
-{
-	serial8250_unregister_port(line);
-}
-EXPORT_SYMBOL(unregister_serial);
diff --git a/drivers/serial/8250.h b/drivers/serial/8250.h
index 9225c82faeb..b1b459efda5 100644
--- a/drivers/serial/8250.h
+++ b/drivers/serial/8250.h
@@ -16,11 +16,7 @@
  */
 
 #include <linux/config.h>
-
-int serial8250_register_port(struct uart_port *);
-void serial8250_unregister_port(int line);
-void serial8250_suspend_port(int line);
-void serial8250_resume_port(int line);
+#include <linux/serial_8250.h>
 
 struct old_serial_port {
 	unsigned int uart;
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index d5797618a3b..74b80f7c062 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -830,7 +830,7 @@ config SERIAL_M32R_PLDSIO
 
 config SERIAL_TXX9
 	bool "TMPTX39XX/49XX SIO support"
-	depends HAS_TXX9_SERIAL
+	depends HAS_TXX9_SERIAL && BROKEN
 	select SERIAL_CORE
 	default y
 
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index 2884b310e54..978e12437e6 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -105,7 +105,7 @@ struct uart_amba_port {
 	unsigned int		old_status;
 };
 
-static void pl010_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void pl010_stop_tx(struct uart_port *port)
 {
 	unsigned int cr;
 
@@ -114,7 +114,7 @@ static void pl010_stop_tx(struct uart_port *port, unsigned int tty_stop)
 	UART_PUT_CR(port, cr);
 }
 
-static void pl010_start_tx(struct uart_port *port, unsigned int tty_start)
+static void pl010_start_tx(struct uart_port *port)
 {
 	unsigned int cr;
 
@@ -219,7 +219,7 @@ static void pl010_tx_chars(struct uart_port *port)
 		return;
 	}
 	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		pl010_stop_tx(port, 0);
+		pl010_stop_tx(port);
 		return;
 	}
 
@@ -236,7 +236,7 @@ static void pl010_tx_chars(struct uart_port *port)
 		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
-		pl010_stop_tx(port, 0);
+		pl010_stop_tx(port);
 }
 
 static void pl010_modem_status(struct uart_port *port)
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 7db88ee18f7..56071309744 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -74,7 +74,7 @@ struct uart_amba_port {
 	unsigned int		old_status;
 };
 
-static void pl011_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void pl011_stop_tx(struct uart_port *port)
 {
 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
 
@@ -82,7 +82,7 @@ static void pl011_stop_tx(struct uart_port *port, unsigned int tty_stop)
 	writew(uap->im, uap->port.membase + UART011_IMSC);
 }
 
-static void pl011_start_tx(struct uart_port *port, unsigned int tty_start)
+static void pl011_start_tx(struct uart_port *port)
 {
 	struct uart_amba_port *uap = (struct uart_amba_port *)port;
 
@@ -184,7 +184,7 @@ static void pl011_tx_chars(struct uart_amba_port *uap)
 		return;
 	}
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
-		pl011_stop_tx(&uap->port, 0);
+		pl011_stop_tx(&uap->port);
 		return;
 	}
 
@@ -201,7 +201,7 @@ static void pl011_tx_chars(struct uart_amba_port *uap)
 		uart_write_wakeup(&uap->port);
 
 	if (uart_circ_empty(xmit))
-		pl011_stop_tx(&uap->port, 0);
+		pl011_stop_tx(&uap->port);
 }
 
 static void pl011_modem_status(struct uart_amba_port *uap)
diff --git a/drivers/serial/au1x00_uart.c b/drivers/serial/au1x00_uart.c
index 6104aeef124..a274ebf256a 100644
--- a/drivers/serial/au1x00_uart.c
+++ b/drivers/serial/au1x00_uart.c
@@ -200,7 +200,7 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 	DEBUG_AUTOCONF("type=%s\n", uart_config[up->port.type].name);
 }
 
-static void serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void serial8250_stop_tx(struct uart_port *port)
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)port;
 
@@ -210,7 +210,7 @@ static void serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
 	}
 }
 
-static void serial8250_start_tx(struct uart_port *port, unsigned int tty_start)
+static void serial8250_start_tx(struct uart_port *port)
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)port;
 
@@ -337,7 +337,7 @@ static _INLINE_ void transmit_chars(struct uart_8250_port *up)
 		return;
 	}
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
-		serial8250_stop_tx(&up->port, 0);
+		serial8250_stop_tx(&up->port);
 		return;
 	}
 
@@ -356,7 +356,7 @@ static _INLINE_ void transmit_chars(struct uart_8250_port *up)
 	DEBUG_INTR("THRE...");
 
 	if (uart_circ_empty(xmit))
-		serial8250_stop_tx(&up->port, 0);
+		serial8250_stop_tx(&up->port);
 }
 
 static _INLINE_ void check_modem_status(struct uart_8250_port *up)
diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
index e92522b33c4..d822896b488 100644
--- a/drivers/serial/clps711x.c
+++ b/drivers/serial/clps711x.c
@@ -69,8 +69,7 @@
 
 #define tx_enabled(port)	((port)->unused[0])
 
-static void
-clps711xuart_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void clps711xuart_stop_tx(struct uart_port *port)
 {
 	if (tx_enabled(port)) {
 		disable_irq(TX_IRQ(port));
@@ -78,8 +77,7 @@ clps711xuart_stop_tx(struct uart_port *port, unsigned int tty_stop)
 	}
 }
 
-static void
-clps711xuart_start_tx(struct uart_port *port, unsigned int tty_start)
+static void clps711xuart_start_tx(struct uart_port *port)
 {
 	if (!tx_enabled(port)) {
 		enable_irq(TX_IRQ(port));
@@ -165,7 +163,7 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id, struct pt_regs *re
 		return IRQ_HANDLED;
 	}
 	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		clps711xuart_stop_tx(port, 0);
+		clps711xuart_stop_tx(port);
 		return IRQ_HANDLED;
 	}
 
@@ -182,7 +180,7 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id, struct pt_regs *re
 		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
-		clps711xuart_stop_tx(port, 0);
+		clps711xuart_stop_tx(port);
 
 	return IRQ_HANDLED;
 }
diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c
index d639ac92a11..282b32351d8 100644
--- a/drivers/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/serial/cpm_uart/cpm_uart_core.c
@@ -124,7 +124,7 @@ static unsigned int cpm_uart_get_mctrl(struct uart_port *port)
 /*
  * Stop transmitter
  */
-static void cpm_uart_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void cpm_uart_stop_tx(struct uart_port *port)
 {
 	struct uart_cpm_port *pinfo = (struct uart_cpm_port *)port;
 	volatile smc_t *smcp = pinfo->smcp;
@@ -141,7 +141,7 @@ static void cpm_uart_stop_tx(struct uart_port *port, unsigned int tty_stop)
 /*
  * Start transmitter
  */
-static void cpm_uart_start_tx(struct uart_port *port, unsigned int tty_start)
+static void cpm_uart_start_tx(struct uart_port *port)
 {
 	struct uart_cpm_port *pinfo = (struct uart_cpm_port *)port;
 	volatile smc_t *smcp = pinfo->smcp;
@@ -623,7 +623,7 @@ static int cpm_uart_tx_pump(struct uart_port *port)
 	}
 
 	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		cpm_uart_stop_tx(port, 0);
+		cpm_uart_stop_tx(port);
 		return 0;
 	}
 
@@ -656,7 +656,7 @@ static int cpm_uart_tx_pump(struct uart_port *port)
 		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit)) {
-		cpm_uart_stop_tx(port, 0);
+		cpm_uart_stop_tx(port);
 		return 0;
 	}
 
diff --git a/drivers/serial/dz.c b/drivers/serial/dz.c
index 97824eeeafa..e63b9dffc8d 100644
--- a/drivers/serial/dz.c
+++ b/drivers/serial/dz.c
@@ -112,7 +112,7 @@ static inline void dz_out(struct dz_port *dport, unsigned offset,
  * ------------------------------------------------------------
  */
 
-static void dz_stop_tx(struct uart_port *uport, unsigned int tty_stop)
+static void dz_stop_tx(struct uart_port *uport)
 {
 	struct dz_port *dport = (struct dz_port *)uport;
 	unsigned short tmp, mask = 1 << dport->port.line;
@@ -125,7 +125,7 @@ static void dz_stop_tx(struct uart_port *uport, unsigned int tty_stop)
 	spin_unlock_irqrestore(&dport->port.lock, flags);
 }
 
-static void dz_start_tx(struct uart_port *uport, unsigned int tty_start)
+static void dz_start_tx(struct uart_port *uport)
 {
 	struct dz_port *dport = (struct dz_port *)uport;
 	unsigned short tmp, mask = 1 << dport->port.line;
@@ -290,7 +290,7 @@ static inline void dz_transmit_chars(struct dz_port *dport)
 	}
 	/* if nothing to do or stopped or hardware stopped */
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&dport->port)) {
-		dz_stop_tx(&dport->port, 0);
+		dz_stop_tx(&dport->port);
 		return;
 	}
 
@@ -308,7 +308,7 @@ static inline void dz_transmit_chars(struct dz_port *dport)
 
 	/* Are we done */
 	if (uart_circ_empty(xmit))
-		dz_stop_tx(&dport->port, 0);
+		dz_stop_tx(&dport->port);
 }
 
 /*
@@ -440,7 +440,7 @@ static int dz_startup(struct uart_port *uport)
  */
 static void dz_shutdown(struct uart_port *uport)
 {
-	dz_stop_tx(uport, 0);
+	dz_stop_tx(uport);
 }
 
 /*
diff --git a/drivers/serial/icom.c b/drivers/serial/icom.c
index c112b32764e..79f8df4d66b 100644
--- a/drivers/serial/icom.c
+++ b/drivers/serial/icom.c
@@ -989,18 +989,16 @@ static unsigned int icom_get_mctrl(struct uart_port *port)
 	return result;
 }
 
-static void icom_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void icom_stop_tx(struct uart_port *port)
 {
 	unsigned char cmdReg;
 
-	if (tty_stop) {
-		trace(ICOM_PORT, "STOP", 0);
-		cmdReg = readb(&ICOM_PORT->dram->CmdReg);
-		writeb(cmdReg | CMD_HOLD_XMIT, &ICOM_PORT->dram->CmdReg);
-	}
+	trace(ICOM_PORT, "STOP", 0);
+	cmdReg = readb(&ICOM_PORT->dram->CmdReg);
+	writeb(cmdReg | CMD_HOLD_XMIT, &ICOM_PORT->dram->CmdReg);
 }
 
-static void icom_start_tx(struct uart_port *port, unsigned int tty_start)
+static void icom_start_tx(struct uart_port *port)
 {
 	unsigned char cmdReg;
 
diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 01a8726a3f9..4c985e6b378 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -124,7 +124,7 @@ static void imx_timeout(unsigned long data)
 /*
  * interrupts disabled on entry
  */
-static void imx_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void imx_stop_tx(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
 	UCR1((u32)sport->port.membase) &= ~UCR1_TXMPTYEN;
@@ -165,13 +165,13 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
 	} while (!(UTS((u32)sport->port.membase) & UTS_TXFULL));
 
 	if (uart_circ_empty(xmit))
-		imx_stop_tx(&sport->port, 0);
+		imx_stop_tx(&sport->port);
 }
 
 /*
  * interrupts disabled on entry
  */
-static void imx_start_tx(struct uart_port *port, unsigned int tty_start)
+static void imx_start_tx(struct uart_port *port)
 {
 	struct imx_port *sport = (struct imx_port *)port;
 
@@ -196,7 +196,7 @@ static irqreturn_t imx_txint(int irq, void *dev_id, struct pt_regs *regs)
 	}
 
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&sport->port)) {
-		imx_stop_tx(&sport->port, 0);
+		imx_stop_tx(&sport->port);
 		goto out;
 	}
 
@@ -291,13 +291,31 @@ static unsigned int imx_tx_empty(struct uart_port *port)
 	return USR2((u32)sport->port.membase) & USR2_TXDC ?  TIOCSER_TEMT : 0;
 }
 
+/*
+ * We have a modem side uart, so the meanings of RTS and CTS are inverted.
+ */
 static unsigned int imx_get_mctrl(struct uart_port *port)
 {
-	return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+        struct imx_port *sport = (struct imx_port *)port;
+        unsigned int tmp = TIOCM_DSR | TIOCM_CAR;
+
+        if (USR1((u32)sport->port.membase) & USR1_RTSS)
+                tmp |= TIOCM_CTS;
+
+        if (UCR2((u32)sport->port.membase) & UCR2_CTS)
+                tmp |= TIOCM_RTS;
+
+        return tmp;
 }
 
 static void imx_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
+        struct imx_port *sport = (struct imx_port *)port;
+
+        if (mctrl & TIOCM_RTS)
+                UCR2((u32)sport->port.membase) |= UCR2_CTS;
+        else
+                UCR2((u32)sport->port.membase) &= ~UCR2_CTS;
 }
 
 /*
diff --git a/drivers/serial/ioc4_serial.c b/drivers/serial/ioc4_serial.c
index 793c3a7cbe4..0c5c96a582b 100644
--- a/drivers/serial/ioc4_serial.c
+++ b/drivers/serial/ioc4_serial.c
@@ -2373,10 +2373,9 @@ static unsigned int ic4_tx_empty(struct uart_port *the_port)
 /**
  * ic4_stop_tx - stop the transmitter
  * @port: Port to operate on
- * @tty_stop: Set to 1 if called via uart_stop
  *
  */
-static void ic4_stop_tx(struct uart_port *the_port, unsigned int tty_stop)
+static void ic4_stop_tx(struct uart_port *the_port)
 {
 }
 
@@ -2471,10 +2470,9 @@ static unsigned int ic4_get_mctrl(struct uart_port *the_port)
 /**
  * ic4_start_tx - Start transmitter, flush any output
  * @port: Port to operate on
- * @tty_stop: Set to 1 if called via uart_start
  *
  */
-static void ic4_start_tx(struct uart_port *the_port, unsigned int tty_stop)
+static void ic4_start_tx(struct uart_port *the_port)
 {
 	struct ioc4_port *port = get_ioc4_port(the_port);
 	unsigned long flags;
diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c
index ea5bf4d4daa..ef132349f31 100644
--- a/drivers/serial/ip22zilog.c
+++ b/drivers/serial/ip22zilog.c
@@ -592,7 +592,7 @@ static void ip22zilog_set_mctrl(struct uart_port *port, unsigned int mctrl)
 }
 
 /* The port lock is held and interrupts are disabled.  */
-static void ip22zilog_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void ip22zilog_stop_tx(struct uart_port *port)
 {
 	struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
 
@@ -600,7 +600,7 @@ static void ip22zilog_stop_tx(struct uart_port *port, unsigned int tty_stop)
 }
 
 /* The port lock is held and interrupts are disabled.  */
-static void ip22zilog_start_tx(struct uart_port *port, unsigned int tty_start)
+static void ip22zilog_start_tx(struct uart_port *port)
 {
 	struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
 	struct zilog_channel *channel = ZILOG_CHANNEL_FROM_PORT(port);
diff --git a/drivers/serial/jsm/jsm_tty.c b/drivers/serial/jsm/jsm_tty.c
index 98de2258fd0..6fa0d62d6f6 100644
--- a/drivers/serial/jsm/jsm_tty.c
+++ b/drivers/serial/jsm/jsm_tty.c
@@ -113,7 +113,7 @@ static void jsm_tty_set_mctrl(struct uart_port *port, unsigned int mctrl)
 	udelay(10);
 }
 
-static void jsm_tty_start_tx(struct uart_port *port, unsigned int tty_start)
+static void jsm_tty_start_tx(struct uart_port *port)
 {
 	struct jsm_channel *channel = (struct jsm_channel *)port;
 
@@ -125,7 +125,7 @@ static void jsm_tty_start_tx(struct uart_port *port, unsigned int tty_start)
 	jsm_printk(IOCTL, INFO, &channel->ch_bd->pci_dev, "finish\n");
 }
 
-static void jsm_tty_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void jsm_tty_stop_tx(struct uart_port *port)
 {
 	struct jsm_channel *channel = (struct jsm_channel *)port;
 
diff --git a/drivers/serial/m32r_sio.c b/drivers/serial/m32r_sio.c
index 9b50560b9d1..b0ecc7537ce 100644
--- a/drivers/serial/m32r_sio.c
+++ b/drivers/serial/m32r_sio.c
@@ -275,7 +275,7 @@ serial_out(struct uart_sio_port *up, int offset, int value)
 	__sio_out(value, offset);
 }
 
-static void m32r_sio_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void m32r_sio_stop_tx(struct uart_port *port)
 {
 	struct uart_sio_port *up = (struct uart_sio_port *)port;
 
@@ -285,7 +285,7 @@ static void m32r_sio_stop_tx(struct uart_port *port, unsigned int tty_stop)
 	}
 }
 
-static void m32r_sio_start_tx(struct uart_port *port, unsigned int tty_start)
+static void m32r_sio_start_tx(struct uart_port *port)
 {
 #ifdef CONFIG_SERIAL_M32R_PLDSIO
 	struct uart_sio_port *up = (struct uart_sio_port *)port;
@@ -425,7 +425,7 @@ static _INLINE_ void transmit_chars(struct uart_sio_port *up)
 		return;
 	}
 	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
-		m32r_sio_stop_tx(&up->port, 0);
+		m32r_sio_stop_tx(&up->port);
 		return;
 	}
 
@@ -446,7 +446,7 @@ static _INLINE_ void transmit_chars(struct uart_sio_port *up)
 	DEBUG_INTR("THRE...");
 
 	if (uart_circ_empty(xmit))
-		m32r_sio_stop_tx(&up->port, 0);
+		m32r_sio_stop_tx(&up->port);
 }
 
 /*