X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fserial%2F8250.c;h=10c2daab99ac1522ca224a6a7407eb6168fa6b19;hb=6ebfc0e20b409f13e62bbb84ce70102b49945cfd;hp=bbf78aaf9e01f074d15bf6db21042feb9dec5591;hpb=0d38eddab9ce6de3a9d6d583043dfa97b6bc0d3b;p=pandora-kernel.git

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index bbf78aaf9e01..10c2daab99ac 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -19,7 +19,6 @@
  *  mapbase is the physical address of the IO port.
  *  membase is an 'ioremapped' cookie.
  */
-#include <linux/config.h>
 
 #if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #define SUPPORT_SYSRQ
@@ -49,7 +48,7 @@
 
 /*
  * Configuration:
- *   share_irqs - whether we pass SA_SHIRQ to request_irq().  This option
+ *   share_irqs - whether we pass IRQF_SHARED to request_irq().  This option
  *                is unsafe when used on edge-triggered interrupts.
  */
 static unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
@@ -300,6 +299,7 @@ static inline int map_8250_out_reg(struct uart_8250_port *up, int offset)
 
 static unsigned int serial_in(struct uart_8250_port *up, int offset)
 {
+	unsigned int tmp;
 	offset = map_8250_in_reg(up, offset) << up->port.regshift;
 
 	switch (up->port.iotype) {
@@ -318,6 +318,13 @@ static unsigned int serial_in(struct uart_8250_port *up, int offset)
 		return __raw_readl(up->port.membase + offset);
 #endif
 
+	case UPIO_TSI:
+		if (offset == UART_IIR) {
+			tmp = readl(up->port.membase + (UART_IIR & ~3));
+			return (tmp >> 16) & 0xff; /* UART_IIR % 4 == 2 */
+		} else
+			return readb(up->port.membase + offset);
+
 	default:
 		return inb(up->port.iobase + offset);
 	}
@@ -347,6 +354,10 @@ serial_out(struct uart_8250_port *up, int offset, int value)
 		__raw_writel(value, up->port.membase + offset);
 		break;
 #endif
+	case UPIO_TSI:
+		if (!((offset == UART_IER) && (value & UART_IER_UUE)))
+			writeb(value, up->port.membase + offset);
+		break;
 
 	default:
 		outb(value, up->port.iobase + offset);
@@ -1401,7 +1412,7 @@ static void serial_do_unlink(struct irq_info *i, struct uart_8250_port *up)
 static int serial_link_irq_chain(struct uart_8250_port *up)
 {
 	struct irq_info *i = irq_lists + up->port.irq;
-	int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? SA_SHIRQ : 0;
+	int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? IRQF_SHARED : 0;
 
 	spin_lock_irq(&i->lock);
 
@@ -2241,10 +2252,14 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 
 	touch_nmi_watchdog();
 
-	if (oops_in_progress) {
-		locked = spin_trylock_irqsave(&up->port.lock, flags);
+	local_irq_save(flags);
+	if (up->port.sysrq) {
+		/* serial8250_handle_port() already took the lock */
+		locked = 0;
+	} else if (oops_in_progress) {
+		locked = spin_trylock(&up->port.lock);
 	} else
-		spin_lock_irqsave(&up->port.lock, flags);
+		spin_lock(&up->port.lock);
 
 	/*
 	 *	First save the IER then disable the interrupts
@@ -2266,7 +2281,8 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
 	serial_out(up, UART_IER, ier);
 
 	if (locked)
-		spin_unlock_irqrestore(&up->port.lock, flags);
+		spin_unlock(&up->port.lock);
+	local_irq_restore(flags);
 }
 
 static int serial8250_console_setup(struct console *co, char *options)
@@ -2354,7 +2370,6 @@ int __init serial8250_start_console(struct uart_port *port, char *options)
 static struct uart_driver serial8250_reg = {
 	.owner			= THIS_MODULE,
 	.driver_name		= "serial",
-	.devfs_name		= "tts/",
 	.dev_name		= "ttyS",
 	.major			= TTY_MAJOR,
 	.minor			= 64,