Automatic merge of kernel.org:/home/rmk/linux-2.6-serial.git

drivers/serial/21285.c

@@ -110,7 +110,7 @@ static irqreturn_t serial21285_rx_chars(int irq, void *dev_id, struct pt_regs *r
 		port->icount.rx++;
 
 		rxs = *CSR_RXSTAT | RXSTAT_DUMMY_READ;
-		if (rxs & RXSTAT_ANYERR) {
+		if (unlikely(rxs & RXSTAT_ANYERR)) {
 			if (rxs & RXSTAT_PARITY)
 				port->icount.parity++;
 			else if (rxs & RXSTAT_FRAME)

drivers/serial/8250_hp300.c

@@ -9,15 +9,15 @@
 #include <linux/init.h>
 #include <linux/string.h>
 #include <linux/kernel.h>
-#include <linux/tty.h>
 #include <linux/serial.h>
-#include <linux/serialP.h>
 #include <linux/serial_core.h>
 #include <linux/delay.h>
 #include <linux/dio.h>
 #include <linux/console.h>
 #include <asm/io.h>
 
+#include "8250.h"
+
 #if !defined(CONFIG_HPDCA) && !defined(CONFIG_HPAPCI)
 #warning CONFIG_8250 defined but neither CONFIG_HPDCA nor CONFIG_HPAPCI defined, are you sure?
 #endif
@@ -163,7 +163,7 @@ int __init hp300_setup_serial_console(void)
 static int __devinit hpdca_init_one(struct dio_dev *d,
                                 const struct dio_device_id *ent)
 {
-	struct serial_struct serial_req;
+	struct uart_port port;
 	int line;
 
 #ifdef CONFIG_SERIAL_8250_CONSOLE
@@ -172,21 +172,22 @@ static int __devinit hpdca_init_one(struct dio_dev *d,
 		return 0;
 	}
 #endif
-	memset(&serial_req, 0, sizeof(struct serial_struct));
+	memset(&port, 0, sizeof(struct uart_port));
 
 	/* Memory mapped I/O */
-	serial_req.io_type = SERIAL_IO_MEM;
-	serial_req.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF;
-	serial_req.irq = d->ipl;
-	serial_req.baud_base = HPDCA_BAUD_BASE;
-	serial_req.iomap_base = (d->resource.start + UART_OFFSET);
-	serial_req.iomem_base = (char *)(serial_req.iomap_base + DIO_VIRADDRBASE);
-	serial_req.iomem_reg_shift = 1;
-	line = register_serial(&serial_req);
+	port.iotype = UPIO_MEM;
+	port.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF;
+	port.irq = d->ipl;
+	port.uartclk = HPDCA_BAUD_BASE * 16;
+	port.mapbase = (d->resource.start + UART_OFFSET);
+	port.membase = (char *)(port.mapbase + DIO_VIRADDRBASE);
+	port.regshift = 1;
+	port.dev = &d->dev;
+	line = serial8250_register_port(&port);
 
 	if (line < 0) {
 		printk(KERN_NOTICE "8250_hp300: register_serial() DCA scode %d"
-		       " irq %d failed\n", d->scode, serial_req.irq);
+		       " irq %d failed\n", d->scode, port.irq);
 		return -ENOMEM;
 	}
 
@@ -209,7 +210,7 @@ static int __init hp300_8250_init(void)
 #ifdef CONFIG_HPAPCI
 	int line;
 	unsigned long base;
-	struct serial_struct serial_req;
+	struct uart_port uport;
 	struct hp300_port *port;
 	int i;
 #endif
@@ -251,25 +252,25 @@ static int __init hp300_8250_init(void)
 		if (!port)
 			return -ENOMEM;
 
-		memset(&serial_req, 0, sizeof(struct serial_struct));
+		memset(&uport, 0, sizeof(struct uart_port));
 
 		base = (FRODO_BASE + FRODO_APCI_OFFSET(i));
 
 		/* Memory mapped I/O */
-		serial_req.io_type = SERIAL_IO_MEM;
-		serial_req.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF;
+		uport.iotype = UPIO_MEM;
+		uport.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF;
 		/* XXX - no interrupt support yet */
-		serial_req.irq = 0;
-		serial_req.baud_base = HPAPCI_BAUD_BASE;
-		serial_req.iomap_base = base;
-		serial_req.iomem_base = (char *)(serial_req.iomap_base + DIO_VIRADDRBASE);
-		serial_req.iomem_reg_shift = 2;
+		uport.irq = 0;
+		uport.uartclk = HPAPCI_BAUD_BASE * 16;
+		uport.mapbase = base;
+		uport.membase = (char *)(base + DIO_VIRADDRBASE);
+		uport.regshift = 2;
 
-		line = register_serial(&serial_req);
+		line = serial8250_register_port(&uport);
 
 		if (line < 0) {
 			printk(KERN_NOTICE "8250_hp300: register_serial() APCI %d"
-			       " irq %d failed\n", i, serial_req.irq);
+			       " irq %d failed\n", i, uport.irq);
 			kfree(port);
 			continue;
 		}
@@ -299,7 +300,7 @@ static void __devexit hpdca_remove_one(struct dio_dev *d)
 		/* Disable board-interrupts */
 		out_8(d->resource.start + DIO_VIRADDRBASE + DCA_IC, 0);
 	}
-	unregister_serial(line);
+	serial8250_unregister_port(line);
 }
 #endif
 
@@ -309,7 +310,7 @@ static void __exit hp300_8250_exit(void)
 	struct hp300_port *port, *to_free;
 
 	for (port = hp300_ports; port; ) {
-		unregister_serial(port->line);
+		serial8250_unregister_port(port->line);
 		to_free = port;
 		port = port->next;
 		kfree(to_free);

drivers/serial/amba-pl010.c

@@ -172,7 +172,7 @@ pl010_rx_chars(struct uart_port *port)
 		 * out of the main execution path
 		 */
 		rsr = UART_GET_RSR(port) | UART_DUMMY_RSR_RX;
-		if (rsr & UART01x_RSR_ANY) {
+		if (unlikely(rsr & UART01x_RSR_ANY)) {
 			if (rsr & UART01x_RSR_BE) {
 				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
 				port->icount.brk++;

drivers/serial/amba-pl011.c

@@ -137,7 +137,7 @@ pl011_rx_chars(struct uart_amba_port *uap)
 		 * out of the main execution path
 		 */
 		rsr = readw(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
-		if (rsr & UART01x_RSR_ANY) {
+		if (unlikely(rsr & UART01x_RSR_ANY)) {
 			if (rsr & UART01x_RSR_BE) {
 				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
 				uap->port.icount.brk++;

drivers/serial/clps711x.c

@@ -116,54 +116,43 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *re
 		 * Note that the error handling code is
 		 * out of the main execution path
 		 */
-		if (ch & UART_ANY_ERR)
-			goto handle_error;
+		if (unlikely(ch & UART_ANY_ERR)) {
+			if (ch & UARTDR_PARERR)
+				port->icount.parity++;
+			else if (ch & UARTDR_FRMERR)
+				port->icount.frame++;
+			if (ch & UARTDR_OVERR)
+				port->icount.overrun++;
 
-		if (uart_handle_sysrq_char(port, ch, regs))
-			goto ignore_char;
+			ch &= port->read_status_mask;
 
-	error_return:
-		tty_insert_flip_char(tty, ch, flg);
-	ignore_char:
-		status = clps_readl(SYSFLG(port));
-	}
- out:
-	tty_flip_buffer_push(tty);
-	return IRQ_HANDLED;
+			if (ch & UARTDR_PARERR)
+				flg = TTY_PARITY;
+			else if (ch & UARTDR_FRMERR)
+				flg = TTY_FRAME;
 
- handle_error:
-	if (ch & UARTDR_PARERR)
-		port->icount.parity++;
-	else if (ch & UARTDR_FRMERR)
-		port->icount.frame++;
-	if (ch & UARTDR_OVERR)
-		port->icount.overrun++;
-
-	if (ch & port->ignore_status_mask) {
-		if (++ignored > 100)
-			goto out;
-		goto ignore_char;
-	}
-	ch &= port->read_status_mask;
+#ifdef SUPPORT_SYSRQ
+			port->sysrq = 0;
+#endif
+		}
 
-	if (ch & UARTDR_PARERR)
-		flg = TTY_PARITY;
-	else if (ch & UARTDR_FRMERR)
-		flg = TTY_FRAME;
+		if (uart_handle_sysrq_char(port, ch, regs))
+			goto ignore_char;
 
-	if (ch & UARTDR_OVERR) {
 		/*
 		 * CHECK: does overrun affect the current character?
 		 * ASSUMPTION: it does not.
 		 */
-		tty_insert_flip_char(tty, ch, flg);
-		ch = 0;
-		flg = TTY_OVERRUN;
+		if ((ch & port->ignore_status_mask & ~RXSTAT_OVERRUN) == 0)
+			tty_insert_flip_char(tty, ch, flg);
+		if ((ch & ~port->ignore_status_mask & RXSTAT_OVERRUN) == 0)
+			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+
+	ignore_char:
+		status = clps_readl(SYSFLG(port));
 	}
-#ifdef SUPPORT_SYSRQ
-	port->sysrq = 0;
-#endif
-	goto error_return;
+	tty_flip_buffer_push(tty);
+	return IRQ_HANDLED;
 }
 
 static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id, struct pt_regs *regs)

drivers/serial/s3c2410.c

@@ -364,7 +364,7 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id, struct pt_regs *regs)
 		flag = TTY_NORMAL;
 		port->icount.rx++;
 
-		if (uerstat & S3C2410_UERSTAT_ANY) {
+		if (unlikely(uerstat & S3C2410_UERSTAT_ANY)) {
 			dbg("rxerr: port ch=0x%02x, rxs=0x%08x\n",
 			    ch, uerstat);
 

drivers/serial/sa1100.c

@@ -214,56 +214,39 @@ sa1100_rx_chars(struct sa1100_port *sport, struct pt_regs *regs)
 		 * note that the error handling code is
 		 * out of the main execution path
 		 */
-		if (status & UTSR1_TO_SM(UTSR1_PRE | UTSR1_FRE | UTSR1_ROR))
-			goto handle_error;
+		if (status & UTSR1_TO_SM(UTSR1_PRE | UTSR1_FRE | UTSR1_ROR)) {
+			if (status & UTSR1_TO_SM(UTSR1_PRE))
+				sport->port.icount.parity++;
+			else if (status & UTSR1_TO_SM(UTSR1_FRE))
+				sport->port.icount.frame++;
+			if (status & UTSR1_TO_SM(UTSR1_ROR))
+				sport->port.icount.overrun++;
+
+			status &= sport->port.read_status_mask;
+
+			if (status & UTSR1_TO_SM(UTSR1_PRE))
+				flg = TTY_PARITY;
+			else if (status & UTSR1_TO_SM(UTSR1_FRE))
+				flg = TTY_FRAME;
+
+#ifdef SUPPORT_SYSRQ
+			sport->port.sysrq = 0;
+#endif
+		}
 
 		if (uart_handle_sysrq_char(&sport->port, ch, regs))
 			goto ignore_char;
 
-	error_return:
-		tty_insert_flip_char(tty, ch, flg);
+		if ((status & port->ignore_status_mask & ~UTSR1_TO_SM(UTSR1_ROR)) == 0)
+			tty_insert_flip_char(tty, ch, flg);
+		if (status & ~port->ignore_status_mask & UTSR1_TO_SM(UTSR1_ROR))
+			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+
 	ignore_char:
 		status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
 			 UTSR0_TO_SM(UART_GET_UTSR0(sport));
 	}
- out:
 	tty_flip_buffer_push(tty);
-	return;
-
- handle_error:
-	if (status & UTSR1_TO_SM(UTSR1_PRE))
-		sport->port.icount.parity++;
-	else if (status & UTSR1_TO_SM(UTSR1_FRE))
-		sport->port.icount.frame++;
-	if (status & UTSR1_TO_SM(UTSR1_ROR))
-		sport->port.icount.overrun++;
-
-	if (status & sport->port.ignore_status_mask) {
-		if (++ignored > 100)
-			goto out;
-		goto ignore_char;
-	}
-
-	status &= sport->port.read_status_mask;
-
-	if (status & UTSR1_TO_SM(UTSR1_PRE))
-		flg = TTY_PARITY;
-	else if (status & UTSR1_TO_SM(UTSR1_FRE))
-		flg = TTY_FRAME;
-
-	if (status & UTSR1_TO_SM(UTSR1_ROR)) {
-		/*
-		 * overrun does *not* affect the character
-		 * we read from the FIFO
-		 */
-		tty_insert_flip_char(tty, ch, flg);
-		ch = 0;
-		flg = TTY_OVERRUN;
-	}
-#ifdef SUPPORT_SYSRQ
-	sport->port.sysrq = 0;
-#endif
-	goto error_return;
 }
 
 static void sa1100_tx_chars(struct sa1100_port *sport)

drivers/serial/serial_lh7a40x.c

@@ -162,7 +162,7 @@ lh7a40xuart_rx_chars (struct uart_port* port)
 		flag = TTY_NORMAL;
 		++port->icount.rx;
 
-		if (data & RxError) {	/* Quick check, short-circuit */
+		if (unlikely(data & RxError)) {	/* Quick check, short-circuit */
 			if (data & RxBreak) {
 				data &= ~(RxFramingError | RxParityError);
 				++port->icount.brk;