drivers/serial/sunsu.c: Correct use after free

[safe/jmp/linux-2.6] / drivers / serial / 21285.c

diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c
index 7572665..8681f13 100644 (file)
--- a/drivers/serial/21285.c
+++ b/drivers/serial/21285.c
@@ -1,13 +1,10 @@
 /*
- * linux/drivers/char/21285.c
+ * linux/drivers/serial/21285.c
  *
  * Driver for the serial port on the 21285 StrongArm-110 core logic chip.
  *
  * Based on drivers/char/serial.c
- *
- *  $Id: 21285.c,v 1.37 2002/07/28 10:03:27 rmk Exp $
  */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/tty.h>
 #include <linux/ioport.h>
@@ -17,12 +14,12 @@
 #include <linux/tty_flip.h>
 #include <linux/serial_core.h>
 #include <linux/serial.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/mach-types.h>
 #include <asm/hardware/dec21285.h>
-#include <asm/hardware.h>
+#include <mach/hardware.h>
 
 #define BAUD_BASE              (mem_fclk_21285/64)
 
@@ -61,7 +58,7 @@ static const char serial21285_name[] = "Footbridge UART";
 static void serial21285_stop_tx(struct uart_port *port)
 {
        if (tx_enabled(port)) {
-               disable_irq(IRQ_CONTX);
+               disable_irq_nosync(IRQ_CONTX);
                tx_enabled(port) = 0;
        }
 }
@@ -77,7 +74,7 @@ static void serial21285_start_tx(struct uart_port *port)
 static void serial21285_stop_rx(struct uart_port *port)
 {
        if (rx_enabled(port)) {
-               disable_irq(IRQ_CONRX);
+               disable_irq_nosync(IRQ_CONRX);
                rx_enabled(port) = 0;
        }
 }
@@ -86,10 +83,10 @@ static void serial21285_enable_ms(struct uart_port *port)
 {
 }
 
-static irqreturn_t serial21285_rx_chars(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t serial21285_rx_chars(int irq, void *dev_id)
 {
        struct uart_port *port = dev_id;
-       struct tty_struct *tty = port->info->tty;
+       struct tty_struct *tty = port->state->port.tty;
        unsigned int status, ch, flag, rxs, max_count = 256;
 
        status = *CSR_UARTFLG;
@@ -124,10 +121,10 @@ static irqreturn_t serial21285_rx_chars(int irq, void *dev_id, struct pt_regs *r
        return IRQ_HANDLED;
 }
 
-static irqreturn_t serial21285_tx_chars(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t serial21285_tx_chars(int irq, void *dev_id)
 {
        struct uart_port *port = dev_id;
-       struct circ_buf *xmit = &port->info->xmit;
+       struct circ_buf *xmit = &port->state->xmit;
        int count = 256;
 
        if (port->x_char) {
@@ -215,8 +212,8 @@ static void serial21285_shutdown(struct uart_port *port)
 }
 
 static void
-serial21285_set_termios(struct uart_port *port, struct termios *termios,
-                       struct termios *old)
+serial21285_set_termios(struct uart_port *port, struct ktermios *termios,
+                       struct ktermios *old)
 {
        unsigned long flags;
        unsigned int baud, quot, h_lcr;
@@ -238,6 +235,12 @@ serial21285_set_termios(struct uart_port *port, struct termios *termios,
        baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); 
        quot = uart_get_divisor(port, baud);
 
+       if (port->state && port->state->port.tty) {
+               struct tty_struct *tty = port->state->port.tty;
+               unsigned int b = port->uartclk / (16 * quot);
+               tty_encode_baud_rate(tty, b, b);
+       }
+
        switch (termios->c_cflag & CSIZE) {
        case CS5:
                h_lcr = 0x00;
@@ -479,7 +482,6 @@ static struct uart_driver serial21285_reg = {
        .owner                  = THIS_MODULE,
        .driver_name            = "ttyFB",
        .dev_name               = "ttyFB",
-       .devfs_name             = "ttyFB",
        .major                  = SERIAL_21285_MAJOR,
        .minor                  = SERIAL_21285_MINOR,
        .nr                     = 1,
@@ -490,7 +492,7 @@ static int __init serial21285_init(void)
 {
        int ret;
 
-       printk(KERN_INFO "Serial: 21285 driver $Revision: 1.37 $\n");
+       printk(KERN_INFO "Serial: 21285 driver\n");
 
        serial21285_setup_ports();
 
@@ -511,5 +513,5 @@ module_init(serial21285_init);
 module_exit(serial21285_exit);
 
 MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Intel Footbridge (21285) serial driver $Revision: 1.37 $");
+MODULE_DESCRIPTION("Intel Footbridge (21285) serial driver");
 MODULE_ALIAS_CHARDEV(SERIAL_21285_MAJOR, SERIAL_21285_MINOR);