[SERIAL] Rename uart_event() to uart_write_wakeup()

uart_event() only has one purpose, which is to wake up any pending
writers via the line discipline.  Rename it to reflect its real
functionality, and drop EVT_WRITE_WAKEUP.

drivers/serial/21285.c

@@ -171,7 +171,7 @@ static void serial21285_tx_chars(int irq, void *dev_id, struct pt_regs *regs)
 	} while (--count > 0 && !(*CSR_UARTFLG & 0x20));
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
 		serial21285_stop_tx(port, 0);

drivers/serial/8250.c

@@ -839,7 +839,7 @@ static _INLINE_ void transmit_chars(struct uart_8250_port *up)
 	} while (--count > 0);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(&up->port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(&up->port);
 
 	DEBUG_INTR("THRE...");
 

drivers/serial/amba.c

@@ -245,7 +245,7 @@ static void ambauart_tx_chars(struct uart_port *port)
 	} while (--count > 0);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
 		ambauart_stop_tx(port);

drivers/serial/anakin.c

@@ -161,7 +161,7 @@ anakin_tx_chars(struct uart_port *port)
 	anakin_transmit_buffer(port);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(port);
 }
 
 static void

drivers/serial/clps711x.c

@@ -209,7 +209,7 @@ static void clps711xuart_int_tx(int irq, void *dev_id, struct pt_regs *regs)
 	} while (--count > 0);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
 		clps711xuart_stop_tx(port);

drivers/serial/core.c

@@ -65,7 +65,7 @@ static void uart_wait_until_sent(struct tty_struct *tty, int timeout);
  * This routine is used by the interrupt handler to schedule processing in
  * the software interrupt portion of the driver.
  */
-void uart_event(struct uart_port *port, int event)
+void uart_write_wakeup(struct uart_port *port)
 {
 	struct uart_info *info = port->info;
 
@@ -2453,7 +2453,7 @@ void uart_unregister_port(struct uart_driver *drv, int line)
 	up(&port_sem);
 }
 
-EXPORT_SYMBOL(uart_event);
+EXPORT_SYMBOL(uart_write_wakeup);
 EXPORT_SYMBOL(uart_register_driver);
 EXPORT_SYMBOL(uart_unregister_driver);
 EXPORT_SYMBOL(uart_register_port);

drivers/serial/sa1100.c

@@ -305,7 +305,7 @@ static void sa1100_tx_chars(struct sa1100_port *sport)
 	}
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(&sport->port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(&sport->port);
 
 	if (uart_circ_empty(xmit))
 		sa1100_stop_tx(&sport->port, 0);

drivers/serial/sunsab.c

@@ -266,7 +266,7 @@ static void transmit_chars(struct uart_sunsab_port *up,
 	writeb(SAB82532_CMDR_XF, &up->regs->w.cmdr);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(&up->port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(&up->port);
 
 	if (uart_circ_empty(xmit))
 		sunsab_stop_tx(&up->port, 0);

drivers/serial/sunsu.c

@@ -431,7 +431,7 @@ static _INLINE_ void transmit_chars(struct uart_sunsu_port *up)
 	} while (--count > 0);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(&up->port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(&up->port);
 
 	if (uart_circ_empty(xmit))
 		sunsu_stop_tx(&up->port, 0);

drivers/serial/sunzilog.c

@@ -523,7 +523,7 @@ static void sunzilog_transmit_chars(struct uart_sunzilog_port *up,
 	up->port.icount.tx++;
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(&up->port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(&up->port);
 
 	if (!uart_circ_empty(xmit))
 		return;

drivers/serial/uart00.c

@@ -215,7 +215,7 @@ static void uart00_tx_chars(struct uart_port *port)
 	} while (--count > 0);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_event(port, EVT_WRITE_WAKEUP);
+		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
 		uart00_stop_tx(port, 0);

include/linux/serial_core.h

@@ -247,8 +247,6 @@ struct uart_info {
 /* number of characters left in xmit buffer before we ask for more */
 #define WAKEUP_CHARS		256
 
-#define EVT_WRITE_WAKEUP	0
-
 struct module;
 struct tty_driver;
 
@@ -269,7 +267,7 @@ struct uart_driver {
 	struct tty_driver	*tty_driver;
 };
 
-void uart_event(struct uart_port *port, int event);
+void uart_write_wakeup(struct uart_port *port);
 struct uart_port *uart_get_console(struct uart_port *ports, int nr,
 				   struct console *c);
 void uart_parse_options(char *options, int *baud, int *parity, int *bits,
@@ -380,7 +378,7 @@ uart_handle_cts_change(struct uart_port *port, unsigned int status)
 			if (status) {
 				tty->hw_stopped = 0;
 				port->ops->start_tx(port, 0);
-				uart_event(port, EVT_WRITE_WAKEUP);
+				uart_write_wakeup(port);
 			}
 		} else {
 			if (!status) {