rt2x00: Release rt2x00 2.1.8

[linux-2.6-omap-h63xx.git] / drivers / char / specialix.c

diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 5ff83df67b447d18054bf45359c183d18fdb9e5a..2ee4d98937572195b474b5efdd42666606520a7a 100644 (file)
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -131,8 +131,8 @@ static int sx_rxfifo = SPECIALIX_RXFIFO;
 #define SX_DEBUG_FIFO    0x0800
 
 
-#define func_enter() dprintk (SX_DEBUG_FLOW, "io8: enter %s\n",__FUNCTION__)
-#define func_exit()  dprintk (SX_DEBUG_FLOW, "io8: exit  %s\n", __FUNCTION__)
+#define func_enter() dprintk (SX_DEBUG_FLOW, "io8: enter %s\n",__func__)
+#define func_exit()  dprintk (SX_DEBUG_FLOW, "io8: exit  %s\n", __func__)
 
 #define jiffies_from_ms(a) ((((a) * HZ)/1000)+1)
 
@@ -443,8 +443,7 @@ void missed_irq (unsigned long data)
        spin_unlock_irqrestore(&bp->lock, flags);
        if (irq) {
                printk (KERN_INFO "Missed interrupt... Calling int from timer. \n");
-               sx_interrupt (((struct specialix_board *)data)->irq,
-                               (void*)data);
+               sx_interrupt (-1, bp);
        }
        mod_timer(&missed_irq_timer, jiffies + sx_poll);
 }
@@ -862,23 +861,22 @@ static inline void sx_check_modem(struct specialix_board * bp)
 
 
 /* The main interrupt processing routine */
-static irqreturn_t sx_interrupt(int irq, void *dev_id)
+static irqreturn_t sx_interrupt(int dummy, void *dev_id)
 {
        unsigned char status;
        unsigned char ack;
-       struct specialix_board *bp;
+       struct specialix_board *bp = dev_id;
        unsigned long loop = 0;
        int saved_reg;
        unsigned long flags;
 
        func_enter();
 
-       bp = dev_id;
        spin_lock_irqsave(&bp->lock, flags);
 
-       dprintk (SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __FUNCTION__, port_No(sx_get_port(bp, "INT")), SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1);
+       dprintk (SX_DEBUG_FLOW, "enter %s port %d room: %ld\n", __func__, port_No(sx_get_port(bp, "INT")), SERIAL_XMIT_SIZE - sx_get_port(bp, "ITN")->xmit_cnt - 1);
        if (!(bp->flags & SX_BOARD_ACTIVE)) {
-               dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", irq);
+               dprintk (SX_DEBUG_IRQ, "sx: False interrupt. irq %d.\n", bp->irq);
                spin_unlock_irqrestore(&bp->lock, flags);
                func_exit();
                return IRQ_NONE;
@@ -1506,6 +1504,27 @@ static int sx_open(struct tty_struct * tty, struct file * filp)
        return 0;
 }
 
+static void sx_flush_buffer(struct tty_struct *tty)
+{
+       struct specialix_port *port = (struct specialix_port *)tty->driver_data;
+       unsigned long flags;
+       struct specialix_board  * bp;
+
+       func_enter();
+
+       if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) {
+               func_exit();
+               return;
+       }
+
+       bp = port_Board(port);
+       spin_lock_irqsave(&port->lock, flags);
+       port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
+       spin_unlock_irqrestore(&port->lock, flags);
+       tty_wakeup(tty);
+
+       func_exit();
+}
 
 static void sx_close(struct tty_struct * tty, struct file * filp)
 {
@@ -1599,8 +1618,7 @@ static void sx_close(struct tty_struct * tty, struct file * filp)
        }
 
        sx_shutdown_port(bp, port);
-       if (tty->driver->flush_buffer)
-               tty->driver->flush_buffer(tty);
+       sx_flush_buffer(tty);
        tty_ldisc_flush(tty);
        spin_lock_irqsave(&port->lock, flags);
        tty->closing = 0;
@@ -1672,7 +1690,7 @@ static int sx_write(struct tty_struct * tty,
 }
 
 
-static void sx_put_char(struct tty_struct * tty, unsigned char ch)
+static int sx_put_char(struct tty_struct * tty, unsigned char ch)
 {
        struct specialix_port *port = (struct specialix_port *)tty->driver_data;
        unsigned long flags;
@@ -1682,12 +1700,12 @@ static void sx_put_char(struct tty_struct * tty, unsigned char ch)
 
        if (sx_paranoia_check(port, tty->name, "sx_put_char")) {
                func_exit();
-               return;
+               return 0;
        }
        dprintk (SX_DEBUG_TX, "check tty: %p %p\n", tty, port->xmit_buf);
        if (!port->xmit_buf) {
                func_exit();
-               return;
+               return 0;
        }
        bp = port_Board(port);
        spin_lock_irqsave(&port->lock, flags);
@@ -1697,7 +1715,7 @@ static void sx_put_char(struct tty_struct * tty, unsigned char ch)
                spin_unlock_irqrestore(&port->lock, flags);
                dprintk (SX_DEBUG_TX, "Exit size\n");
                func_exit();
-               return;
+               return 0;
        }
        dprintk (SX_DEBUG_TX, "Handle xmit: %p %p\n", port, port->xmit_buf);
        port->xmit_buf[port->xmit_head++] = ch;
@@ -1706,6 +1724,7 @@ static void sx_put_char(struct tty_struct * tty, unsigned char ch)
        spin_unlock_irqrestore(&port->lock, flags);
 
        func_exit();
+       return 1;
 }
 
 
@@ -1772,28 +1791,6 @@ static int sx_chars_in_buffer(struct tty_struct *tty)
 }
 
 
-static void sx_flush_buffer(struct tty_struct *tty)
-{
-       struct specialix_port *port = (struct specialix_port *)tty->driver_data;
-       unsigned long flags;
-       struct specialix_board  * bp;
-
-       func_enter();
-
-       if (sx_paranoia_check(port, tty->name, "sx_flush_buffer")) {
-               func_exit();
-               return;
-       }
-
-       bp = port_Board(port);
-       spin_lock_irqsave(&port->lock, flags);
-       port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
-       spin_unlock_irqrestore(&port->lock, flags);
-       tty_wakeup(tty);
-
-       func_exit();
-}
-
 
 static int sx_tiocmget(struct tty_struct *tty, struct file *file)
 {
@@ -1805,7 +1802,7 @@ static int sx_tiocmget(struct tty_struct *tty, struct file *file)
 
        func_enter();
 
-       if (sx_paranoia_check(port, tty->name, __FUNCTION__)) {
+       if (sx_paranoia_check(port, tty->name, __func__)) {
                func_exit();
                return -ENODEV;
        }
@@ -1847,7 +1844,7 @@ static int sx_tiocmset(struct tty_struct *tty, struct file *file,
 
        func_enter();
 
-       if (sx_paranoia_check(port, tty->name, __FUNCTION__)) {
+       if (sx_paranoia_check(port, tty->name, __func__)) {
                func_exit();
                return -ENODEV;
        }
@@ -1924,29 +1921,13 @@ static inline int sx_set_serial_info(struct specialix_port * port,
        int change_speed;
 
        func_enter();
-       /*
-       if (!access_ok(VERIFY_READ, (void *) newinfo, sizeof(tmp))) {
-               func_exit();
-               return -EFAULT;
-       }
-       */
+
        if (copy_from_user(&tmp, newinfo, sizeof(tmp))) {
                func_enter();
                return -EFAULT;
        }
 
-#if 0
-       if ((tmp.irq != bp->irq) ||
-           (tmp.port != bp->base) ||
-           (tmp.type != PORT_CIRRUS) ||
-           (tmp.baud_base != (SX_OSCFREQ + CD186x_TPC/2) / CD186x_TPC) ||
-           (tmp.custom_divisor != 0) ||
-           (tmp.xmit_fifo_size != CD186x_NFIFO) ||
-           (tmp.flags & ~SPECIALIX_LEGAL_FLAGS)) {
-               func_exit();
-               return -EINVAL;
-       }
-#endif
+       lock_kernel();
 
        change_speed = ((port->flags & ASYNC_SPD_MASK) !=
                        (tmp.flags & ASYNC_SPD_MASK));
@@ -1958,6 +1939,7 @@ static inline int sx_set_serial_info(struct specialix_port * port,
                    ((tmp.flags & ~ASYNC_USR_MASK) !=
                     (port->flags & ~ASYNC_USR_MASK))) {
                        func_exit();
+                       unlock_kernel();
                        return -EPERM;
                }
                port->flags = ((port->flags & ~ASYNC_USR_MASK) |
@@ -1974,6 +1956,7 @@ static inline int sx_set_serial_info(struct specialix_port * port,
                sx_change_speed(bp, port);
        }
        func_exit();
+       unlock_kernel();
        return 0;
 }
 
@@ -1986,12 +1969,8 @@ static inline int sx_get_serial_info(struct specialix_port * port,
 
        func_enter();
 
-       /*
-       if (!access_ok(VERIFY_WRITE, (void *) retinfo, sizeof(tmp)))
-               return -EFAULT;
-       */
-
        memset(&tmp, 0, sizeof(tmp));
+       lock_kernel();
        tmp.type = PORT_CIRRUS;
        tmp.line = port - sx_port;
        tmp.port = bp->base;
@@ -2002,6 +1981,7 @@ static inline int sx_get_serial_info(struct specialix_port * port,
        tmp.closing_wait = port->closing_wait * HZ/100;
        tmp.custom_divisor =  port->custom_divisor;
        tmp.xmit_fifo_size = CD186x_NFIFO;
+       unlock_kernel();
        if (copy_to_user(retinfo, &tmp, sizeof(tmp))) {
                func_exit();
                return -EFAULT;
@@ -2047,23 +2027,6 @@ static int sx_ioctl(struct tty_struct * tty, struct file * filp,
                sx_send_break(port, arg ? arg*(HZ/10) : HZ/4);
                func_exit();
                return 0;
-        case TIOCGSOFTCAR:
-                if (put_user(C_CLOCAL(tty)?1:0, (unsigned long __user *)argp)) {
-                        func_exit();
-                        return -EFAULT;
-                }
-                func_exit();
-               return 0;
-        case TIOCSSOFTCAR:
-                if (get_user(arg, (unsigned long __user *) argp)) {
-                        func_exit();
-                        return -EFAULT;
-                }
-               tty->termios->c_cflag =
-                       ((tty->termios->c_cflag & ~CLOCAL) |
-                       (arg ? CLOCAL : 0));
-               func_exit();
-               return 0;
         case TIOCGSERIAL:
                 func_exit();
                return sx_get_serial_info(port, argp);