5 files changed, 44 insertions, 18 deletions

diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c
index 53e0323d4b83..bdb4e454b8b0 100644
--- a/drivers/serial/imx.c
+++ b/drivers/serial/imx.c
@@ -73,7 +73,7 @@ struct imx_port {
         struct uart_port        port;
         struct timer_list       timer;
         unsigned int            old_status;
-        int txirq,rxirq;
+        int txirq,rxirq,rtsirq;
 };
 
 /*
@@ -181,6 +181,22 @@ static void imx_start_tx(struct uart_port *port)
                 imx_transmit_buffer(sport);
 }
 
+static irqreturn_t imx_rtsint(int irq, void *dev_id, struct pt_regs *regs)
+{
+        struct imx_port *sport = (struct imx_port *)dev_id;
+        unsigned int val = USR1((u32)sport->port.membase)&USR1_RTSS;
+        unsigned long flags;
+
+        spin_lock_irqsave(&sport->port.lock, flags);
+
+        USR1((u32)sport->port.membase) = USR1_RTSD;
+        uart_handle_cts_change(&sport->port, !!val);
+        wake_up_interruptible(&sport->port.info->delta_msr_wait);
+
+        spin_unlock_irqrestore(&sport->port.lock, flags);
+        return IRQ_HANDLED;
+}
+
 static irqreturn_t imx_txint(int irq, void *dev_id, struct pt_regs *regs)
 {
         struct imx_port *sport = (struct imx_port *)dev_id;
@@ -386,15 +402,21 @@ static int imx_startup(struct uart_port *port)
         if (retval) goto error_out1;
 
         retval = request_irq(sport->txirq, imx_txint, 0,
-                             "imx-uart", sport);
+                             DRIVER_NAME, sport);
         if (retval) goto error_out2;
 
+        retval = request_irq(sport->rtsirq, imx_rtsint, 0,
+                             DRIVER_NAME, sport);
+        if (retval) goto error_out3;
+        set_irq_type(sport->rtsirq, IRQT_BOTHEDGE);
+
         /*
          * Finally, clear and enable interrupts
          */
 
+        USR1((u32)sport->port.membase) = USR1_RTSD;
         UCR1((u32)sport->port.membase) |=
-                         (UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_UARTEN);
+                         (UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
 
         UCR2((u32)sport->port.membase) |= (UCR2_RXEN | UCR2_TXEN);
         /*
@@ -406,6 +428,8 @@ static int imx_startup(struct uart_port *port)
 
         return 0;
 
+error_out3:
+        free_irq(sport->txirq, sport);
 error_out2:
         free_irq(sport->rxirq, sport);
 error_out1:
@@ -424,6 +448,7 @@ static void imx_shutdown(struct uart_port *port)
         /*
          * Free the interrupts
          */
+        free_irq(sport->rtsirq, sport);
         free_irq(sport->txirq, sport);
         free_irq(sport->rxirq, sport);
 
@@ -432,7 +457,7 @@ static void imx_shutdown(struct uart_port *port)
          */
 
         UCR1((u32)sport->port.membase) &=
-                         ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_UARTEN);
+                         ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
 }
 
 static void
@@ -522,7 +547,7 @@ imx_set_termios(struct uart_port *port, struct termios *termios,
          * disable interrupts and drain transmitter
          */
         old_ucr1 = UCR1((u32)sport->port.membase);
-        UCR1((u32)sport->port.membase) &= ~(UCR1_TXMPTYEN | UCR1_RRDYEN);
+        UCR1((u32)sport->port.membase) &= ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN);
 
         while ( !(USR2((u32)sport->port.membase) & USR2_TXDC))
                 barrier();
@@ -643,6 +668,7 @@ static struct imx_port imx_ports[] = {
         {
         .txirq  = UART1_MINT_TX,
         .rxirq  = UART1_MINT_RX,
+        .rtsirq = UART1_MINT_RTS,
         .port   = {
                 .type           = PORT_IMX,
                 .iotype         = SERIAL_IO_MEM,
@@ -658,6 +684,7 @@ static struct imx_port imx_ports[] = {
         }, {
         .txirq  = UART2_MINT_TX,
         .rxirq  = UART2_MINT_RX,
+        .rtsirq = UART2_MINT_RTS,
         .port   = {
                 .type           = PORT_IMX,
                 .iotype         = SERIAL_IO_MEM,
@@ -737,7 +764,7 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
 
         UCR1((u32)sport->port.membase) =
                            (old_ucr1 | UCR1_UARTCLKEN | UCR1_UARTEN)
-                           & ~(UCR1_TXMPTYEN | UCR1_RRDYEN);
+                           & ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN);
         UCR2((u32)sport->port.membase) = old_ucr2 | UCR2_TXEN;
 
         /*
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index 672b359b07ce..90c2a86c421b 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -499,7 +499,7 @@ serial_pxa_set_termios(struct uart_port *port, struct termios *termios,
         /*
          * Update the per-port timeout.
          */
-        uart_update_timeout(port, termios->c_cflag, quot);
+        uart_update_timeout(port, termios->c_cflag, baud);
 
         up->port.read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
         if (termios->c_iflag & INPCK)
diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index eff2158024c8..52692aa345ec 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -1092,8 +1092,8 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
 
 static int probe_index = 0;
 
-int s3c24xx_serial_probe(struct device *_dev,
-                         struct s3c24xx_uart_info *info)
+static int s3c24xx_serial_probe(struct device *_dev,
+                                struct s3c24xx_uart_info *info)
 {
         struct s3c24xx_uart_port *ourport;
         struct platform_device *dev = to_platform_device(_dev);
@@ -1120,7 +1120,7 @@ int s3c24xx_serial_probe(struct device *_dev,
         return ret;
 }
 
-int s3c24xx_serial_remove(struct device *_dev)
+static int s3c24xx_serial_remove(struct device *_dev)
 {
         struct uart_port *port = s3c24xx_dev_to_port(_dev);
 
@@ -1134,7 +1134,8 @@ int s3c24xx_serial_remove(struct device *_dev)
 
 #ifdef CONFIG_PM
 
-int s3c24xx_serial_suspend(struct device *dev, pm_message_t state, u32 level)
+static int s3c24xx_serial_suspend(struct device *dev, pm_message_t state,
+                                  u32 level)
 {
         struct uart_port *port = s3c24xx_dev_to_port(dev);
 
@@ -1144,7 +1145,7 @@ int s3c24xx_serial_suspend(struct device *dev, pm_message_t state, u32 level)
         return 0;
 }
 
-int s3c24xx_serial_resume(struct device *dev, u32 level)
+static int s3c24xx_serial_resume(struct device *dev, u32 level)
 {
         struct uart_port *port = s3c24xx_dev_to_port(dev);
         struct s3c24xx_uart_port *ourport = to_ourport(port);
@@ -1165,8 +1166,8 @@ int s3c24xx_serial_resume(struct device *dev, u32 level)
 #define s3c24xx_serial_resume  NULL
 #endif
 
-int s3c24xx_serial_init(struct device_driver *drv,
-                        struct s3c24xx_uart_info *info)
+static int s3c24xx_serial_init(struct device_driver *drv,
+                               struct s3c24xx_uart_info *info)
 {
         dbg("s3c24xx_serial_init(%p,%p)\n", drv, info);
         return driver_register(drv);
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index e971156daa60..ba9381fd3f2d 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -274,7 +274,6 @@ static void transmit_chars(struct uart_sunsab_port *up,
         if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
                 up->interrupt_mask1 |= SAB82532_IMR1_XPR;
                 writeb(up->interrupt_mask1, &up->regs->w.imr1);
-                uart_write_wakeup(&up->port);
                 return;
         }
 
diff --git a/drivers/serial/sunzilog.c b/drivers/serial/sunzilog.c
index d75445738c88..7653d6cf05af 100644
--- a/drivers/serial/sunzilog.c
+++ b/drivers/serial/sunzilog.c
@@ -517,10 +517,9 @@ static void sunzilog_transmit_chars(struct uart_sunzilog_port *up,
         if (up->port.info == NULL)
                 goto ack_tx_int;
         xmit = &up->port.info->xmit;
-        if (uart_circ_empty(xmit)) {
-                uart_write_wakeup(&up->port);
+        if (uart_circ_empty(xmit))
                 goto ack_tx_int;
-        }
+
         if (uart_tx_stopped(&up->port))
                 goto ack_tx_int;