Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
[pandora-kernel.git] / drivers / char / synclinkmp.c
index e98c3e6..5768c41 100644 (file)
@@ -151,18 +151,15 @@ struct    _input_signal_events {
 typedef struct _synclinkmp_info {
        void *if_ptr;                           /* General purpose pointer (used by SPPP) */
        int                     magic;
-       int                     flags;
-       int                     count;          /* count of opens */
+       struct tty_port         port;
        int                     line;
        unsigned short          close_delay;
        unsigned short          closing_wait;   /* time to wait before closing */
 
        struct mgsl_icount      icount;
 
-       struct tty_struct       *tty;
        int                     timeout;
        int                     x_char;         /* xon/xoff character */
-       int                     blocked_open;   /* # of blocked opens */
        u16                     read_status_mask1;  /* break detection (SR1 indications) */
        u16                     read_status_mask2;  /* parity/framing/overun (SR2 indications) */
        unsigned char           ignore_status_mask1;  /* break detection (SR1 indications) */
@@ -172,9 +169,6 @@ typedef struct _synclinkmp_info {
        int                     tx_get;
        int                     tx_count;
 
-       wait_queue_head_t       open_wait;
-       wait_queue_head_t       close_wait;
-
        wait_queue_head_t       status_event_wait_q;
        wait_queue_head_t       event_wait_q;
        struct timer_list       tx_timer;       /* HDLC transmit timeout timer */
@@ -462,13 +456,13 @@ static int synclinkmp_device_count = 0;
  * .text section address and breakpoint on module load.
  * This is useful for use with gdb and add-symbol-file command.
  */
-static int break_on_load=0;
+static int break_on_load = 0;
 
 /*
  * Driver major number, defaults to zero to get auto
  * assigned major number. May be forced as module parameter.
  */
-static int ttymajor=0;
+static int ttymajor = 0;
 
 /*
  * Array of user specified options for ISA adapters.
@@ -519,7 +513,7 @@ static void hangup(struct tty_struct *tty);
 static void set_termios(struct tty_struct *tty, struct ktermios *old_termios);
 
 static int  write(struct tty_struct *tty, const unsigned char *buf, int count);
-static void put_char(struct tty_struct *tty, unsigned char ch);
+static int put_char(struct tty_struct *tty, unsigned char ch);
 static void send_xchar(struct tty_struct *tty, char ch);
 static void wait_until_sent(struct tty_struct *tty, int timeout);
 static int  write_room(struct tty_struct *tty);
@@ -712,8 +706,8 @@ static void ldisc_receive_buf(struct tty_struct *tty,
                return;
        ld = tty_ldisc_ref(tty);
        if (ld) {
-               if (ld->receive_buf)
-                       ld->receive_buf(tty, data, flags, count);
+               if (ld->ops->receive_buf)
+                       ld->ops->receive_buf(tty, data, flags, count);
                tty_ldisc_deref(ld);
        }
 }
@@ -747,22 +741,22 @@ static int open(struct tty_struct *tty, struct file *filp)
        }
 
        tty->driver_data = info;
-       info->tty = tty;
+       info->port.tty = tty;
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s open(), old ref count = %d\n",
-                        __FILE__,__LINE__,tty->driver->name, info->count);
+                        __FILE__,__LINE__,tty->driver->name, info->port.count);
 
        /* If port is closing, signal caller to try again */
-       if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){
-               if (info->flags & ASYNC_CLOSING)
-                       interruptible_sleep_on(&info->close_wait);
-               retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
+       if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
+               if (info->port.flags & ASYNC_CLOSING)
+                       interruptible_sleep_on(&info->port.close_wait);
+               retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
                        -EAGAIN : -ERESTARTSYS);
                goto cleanup;
        }
 
-       info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+       info->port.tty->low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
 
        spin_lock_irqsave(&info->netlock, flags);
        if (info->netcount) {
@@ -770,10 +764,10 @@ static int open(struct tty_struct *tty, struct file *filp)
                spin_unlock_irqrestore(&info->netlock, flags);
                goto cleanup;
        }
-       info->count++;
+       info->port.count++;
        spin_unlock_irqrestore(&info->netlock, flags);
 
-       if (info->count == 1) {
+       if (info->port.count == 1) {
                /* 1st open on this device, init hardware */
                retval = startup(info);
                if (retval < 0)
@@ -796,9 +790,9 @@ static int open(struct tty_struct *tty, struct file *filp)
 cleanup:
        if (retval) {
                if (tty->count == 1)
-                       info->tty = NULL; /* tty layer will release tty struct */
-               if(info->count)
-                       info->count--;
+                       info->port.tty = NULL; /* tty layer will release tty struct */
+               if(info->port.count)
+                       info->port.count--;
        }
 
        return retval;
@@ -816,33 +810,33 @@ static void close(struct tty_struct *tty, struct file *filp)
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s close() entry, count=%d\n",
-                        __FILE__,__LINE__, info->device_name, info->count);
+                        __FILE__,__LINE__, info->device_name, info->port.count);
 
-       if (!info->count)
+       if (!info->port.count)
                return;
 
        if (tty_hung_up_p(filp))
                goto cleanup;
 
-       if ((tty->count == 1) && (info->count != 1)) {
+       if ((tty->count == 1) && (info->port.count != 1)) {
                /*
                 * tty->count is 1 and the tty structure will be freed.
-                * info->count should be one in this case.
+                * info->port.count should be one in this case.
                 * if it's not, correct it so that the port is shutdown.
                 */
                printk("%s(%d):%s close: bad refcount; tty->count is 1, "
-                      "info->count is %d\n",
-                        __FILE__,__LINE__, info->device_name, info->count);
-               info->count = 1;
+                      "info->port.count is %d\n",
+                        __FILE__,__LINE__, info->device_name, info->port.count);
+               info->port.count = 1;
        }
 
-       info->count--;
+       info->port.count--;
 
        /* if at least one open remaining, leave hardware active */
-       if (info->count)
+       if (info->port.count)
                goto cleanup;
 
-       info->flags |= ASYNC_CLOSING;
+       info->port.flags |= ASYNC_CLOSING;
 
        /* set tty->closing to notify line discipline to
         * only process XON/XOFF characters. Only the N_TTY
@@ -852,41 +846,40 @@ static void close(struct tty_struct *tty, struct file *filp)
 
        /* wait for transmit data to clear all layers */
 
-       if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) {
+       if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
                if (debug_level >= DEBUG_LEVEL_INFO)
                        printk("%s(%d):%s close() calling tty_wait_until_sent\n",
                                 __FILE__,__LINE__, info->device_name );
-               tty_wait_until_sent(tty, info->closing_wait);
+               tty_wait_until_sent(tty, info->port.closing_wait);
        }
 
-       if (info->flags & ASYNC_INITIALIZED)
+       if (info->port.flags & ASYNC_INITIALIZED)
                wait_until_sent(tty, info->timeout);
 
-       if (tty->driver->flush_buffer)
-               tty->driver->flush_buffer(tty);
+       flush_buffer(tty);
 
        tty_ldisc_flush(tty);
 
        shutdown(info);
 
        tty->closing = 0;
-       info->tty = NULL;
+       info->port.tty = NULL;
 
-       if (info->blocked_open) {
-               if (info->close_delay) {
-                       msleep_interruptible(jiffies_to_msecs(info->close_delay));
+       if (info->port.blocked_open) {
+               if (info->port.close_delay) {
+                       msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
                }
-               wake_up_interruptible(&info->open_wait);
+               wake_up_interruptible(&info->port.open_wait);
        }
 
-       info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
+       info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
 
-       wake_up_interruptible(&info->close_wait);
+       wake_up_interruptible(&info->port.close_wait);
 
 cleanup:
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__,
-                       tty->driver->name, info->count);
+                       tty->driver->name, info->port.count);
 }
 
 /* Called by tty_hangup() when a hangup is signaled.
@@ -906,11 +899,11 @@ static void hangup(struct tty_struct *tty)
        flush_buffer(tty);
        shutdown(info);
 
-       info->count = 0;
-       info->flags &= ~ASYNC_NORMAL_ACTIVE;
-       info->tty = NULL;
+       info->port.count = 0;
+       info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
+       info->port.tty = NULL;
 
-       wake_up_interruptible(&info->open_wait);
+       wake_up_interruptible(&info->port.open_wait);
 }
 
 /* Set new termios settings
@@ -1046,10 +1039,11 @@ cleanup:
 
 /* Add a character to the transmit buffer.
  */
-static void put_char(struct tty_struct *tty, unsigned char ch)
+static int put_char(struct tty_struct *tty, unsigned char ch)
 {
        SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
        unsigned long flags;
+       int ret = 0;
 
        if ( debug_level >= DEBUG_LEVEL_INFO ) {
                printk( "%s(%d):%s put_char(%d)\n",
@@ -1057,10 +1051,10 @@ static void put_char(struct tty_struct *tty, unsigned char ch)
        }
 
        if (sanity_check(info, tty->name, "put_char"))
-               return;
+               return 0;
 
        if (!info->tx_buf)
-               return;
+               return 0;
 
        spin_lock_irqsave(&info->lock,flags);
 
@@ -1072,10 +1066,12 @@ static void put_char(struct tty_struct *tty, unsigned char ch)
                        if (info->tx_put >= info->max_frame_size)
                                info->tx_put -= info->max_frame_size;
                        info->tx_count++;
+                       ret = 1;
                }
        }
 
        spin_unlock_irqrestore(&info->lock,flags);
+       return ret;
 }
 
 /* Send a high-priority XON/XOFF character
@@ -1119,7 +1115,9 @@ static void wait_until_sent(struct tty_struct *tty, int timeout)
        if (sanity_check(info, tty->name, "wait_until_sent"))
                return;
 
-       if (!(info->flags & ASYNC_INITIALIZED))
+       lock_kernel();
+
+       if (!(info->port.flags & ASYNC_INITIALIZED))
                goto exit;
 
        orig_jiffies = jiffies;
@@ -1161,6 +1159,7 @@ static void wait_until_sent(struct tty_struct *tty, int timeout)
        }
 
 exit:
+       unlock_kernel();
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s wait_until_sent() exit\n",
                         __FILE__,__LINE__, info->device_name );
@@ -1176,6 +1175,7 @@ static int write_room(struct tty_struct *tty)
        if (sanity_check(info, tty->name, "write_room"))
                return 0;
 
+       lock_kernel();
        if (info->params.mode == MGSL_MODE_HDLC) {
                ret = (info->tx_active) ? 0 : HDLC_MAX_FRAME_SIZE;
        } else {
@@ -1183,6 +1183,7 @@ static int write_room(struct tty_struct *tty)
                if (ret < 0)
                        ret = 0;
        }
+       unlock_kernel();
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s write_room()=%d\n",
@@ -1303,7 +1304,7 @@ static void tx_release(struct tty_struct *tty)
  *
  * Return Value:       0 if success, otherwise error code
  */
-static int ioctl(struct tty_struct *tty, struct file *file,
+static int do_ioctl(struct tty_struct *tty, struct file *file,
                 unsigned int cmd, unsigned long arg)
 {
        SLMP_INFO *info = (SLMP_INFO *)tty->driver_data;
@@ -1393,6 +1394,16 @@ static int ioctl(struct tty_struct *tty, struct file *file,
        return 0;
 }
 
+static int ioctl(struct tty_struct *tty, struct file *file,
+                unsigned int cmd, unsigned long arg)
+{
+       int ret;
+       lock_kernel();
+       ret = do_ioctl(tty, file, cmd, arg);
+       unlock_kernel();
+       return ret;
+}
+
 /*
  * /proc fs routines....
  */
@@ -1619,7 +1630,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
        unsigned short new_crctype;
 
        /* return error if TTY interface open */
-       if (info->count)
+       if (info->port.count)
                return -EBUSY;
 
        switch (encoding)
@@ -1661,7 +1672,6 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
 static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
 {
        SLMP_INFO *info = dev_to_port(dev);
-       struct net_device_stats *stats = hdlc_stats(dev);
        unsigned long flags;
 
        if (debug_level >= DEBUG_LEVEL_INFO)
@@ -1675,8 +1685,8 @@ static int hdlcdev_xmit(struct sk_buff *skb, struct net_device *dev)
        tx_load_dma_buffer(info, skb->data, skb->len);
 
        /* update network statistics */
-       stats->tx_packets++;
-       stats->tx_bytes += skb->len;
+       dev->stats.tx_packets++;
+       dev->stats.tx_bytes += skb->len;
 
        /* done with socket buffer, so free it */
        dev_kfree_skb(skb);
@@ -1716,7 +1726,7 @@ static int hdlcdev_open(struct net_device *dev)
 
        /* arbitrate between network and tty opens */
        spin_lock_irqsave(&info->netlock, flags);
-       if (info->count != 0 || info->netcount != 0) {
+       if (info->port.count != 0 || info->netcount != 0) {
                printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
                spin_unlock_irqrestore(&info->netlock, flags);
                return -EBUSY;
@@ -1802,7 +1812,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
                printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
 
        /* return error if TTY interface open */
-       if (info->count)
+       if (info->port.count)
                return -EBUSY;
 
        if (cmd != SIOCWANDEV)
@@ -1892,14 +1902,13 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 static void hdlcdev_tx_timeout(struct net_device *dev)
 {
        SLMP_INFO *info = dev_to_port(dev);
-       struct net_device_stats *stats = hdlc_stats(dev);
        unsigned long flags;
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("hdlcdev_tx_timeout(%s)\n",dev->name);
 
-       stats->tx_errors++;
-       stats->tx_aborted_errors++;
+       dev->stats.tx_errors++;
+       dev->stats.tx_aborted_errors++;
 
        spin_lock_irqsave(&info->lock,flags);
        tx_stop(info);
@@ -1932,27 +1941,27 @@ static void hdlcdev_rx(SLMP_INFO *info, char *buf, int size)
 {
        struct sk_buff *skb = dev_alloc_skb(size);
        struct net_device *dev = info->netdev;
-       struct net_device_stats *stats = hdlc_stats(dev);
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("hdlcdev_rx(%s)\n",dev->name);
 
        if (skb == NULL) {
-               printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n", dev->name);
-               stats->rx_dropped++;
+               printk(KERN_NOTICE "%s: can't alloc skb, dropping packet\n",
+                      dev->name);
+               dev->stats.rx_dropped++;
                return;
        }
 
-       memcpy(skb_put(skb, size),buf,size);
+       memcpy(skb_put(skb, size), buf, size);
 
-       skb->protocol = hdlc_type_trans(skb, info->netdev);
+       skb->protocol = hdlc_type_trans(skb, dev);
 
-       stats->rx_packets++;
-       stats->rx_bytes += size;
+       dev->stats.rx_packets++;
+       dev->stats.rx_bytes += size;
 
        netif_rx(skb);
 
-       info->netdev->last_rx = jiffies;
+       dev->last_rx = jiffies;
 }
 
 /**
@@ -2111,7 +2120,7 @@ static void bh_receive(SLMP_INFO *info)
 
 static void bh_transmit(SLMP_INFO *info)
 {
-       struct tty_struct *tty = info->tty;
+       struct tty_struct *tty = info->port.tty;
 
        if ( debug_level >= DEBUG_LEVEL_BH )
                printk( "%s(%d):%s bh_transmit() entry\n",
@@ -2161,7 +2170,7 @@ static void isr_timer(SLMP_INFO * info)
 
 static void isr_rxint(SLMP_INFO * info)
 {
-       struct tty_struct *tty = info->tty;
+       struct tty_struct *tty = info->port.tty;
        struct  mgsl_icount *icount = &info->icount;
        unsigned char status = read_reg(info, SR1) & info->ie1_value & (FLGD + IDLD + CDCD + BRKD);
        unsigned char status2 = read_reg(info, SR2) & info->ie2_value & OVRN;
@@ -2188,7 +2197,7 @@ static void isr_rxint(SLMP_INFO * info)
                                if (!(status & info->ignore_status_mask1)) {
                                        if (info->read_status_mask1 & BRKD) {
                                                tty_insert_flip_char(tty, 0, TTY_BREAK);
-                                               if (info->flags & ASYNC_SAK)
+                                               if (info->port.flags & ASYNC_SAK)
                                                        do_SAK(tty);
                                        }
                                }
@@ -2222,7 +2231,7 @@ static void isr_rxrdy(SLMP_INFO * info)
 {
        u16 status;
        unsigned char DataByte;
-       struct tty_struct *tty = info->tty;
+       struct tty_struct *tty = info->port.tty;
        struct  mgsl_icount *icount = &info->icount;
 
        if ( debug_level >= DEBUG_LEVEL_ISR )
@@ -2335,7 +2344,7 @@ static void isr_txeom(SLMP_INFO * info, unsigned char status)
                else
 #endif
                {
-                       if (info->tty && (info->tty->stopped || info->tty->hw_stopped)) {
+                       if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) {
                                tx_stop(info);
                                return;
                        }
@@ -2390,7 +2399,7 @@ static void isr_txrdy(SLMP_INFO * info)
                return;
        }
 
-       if (info->tty && (info->tty->stopped || info->tty->hw_stopped)) {
+       if (info->port.tty && (info->port.tty->stopped || info->port.tty->hw_stopped)) {
                tx_stop(info);
                return;
        }
@@ -2537,29 +2546,29 @@ static void isr_io_pin( SLMP_INFO *info, u16 status )
                wake_up_interruptible(&info->status_event_wait_q);
                wake_up_interruptible(&info->event_wait_q);
 
-               if ( (info->flags & ASYNC_CHECK_CD) &&
+               if ( (info->port.flags & ASYNC_CHECK_CD) &&
                     (status & MISCSTATUS_DCD_LATCHED) ) {
                        if ( debug_level >= DEBUG_LEVEL_ISR )
                                printk("%s CD now %s...", info->device_name,
                                       (status & SerialSignal_DCD) ? "on" : "off");
                        if (status & SerialSignal_DCD)
-                               wake_up_interruptible(&info->open_wait);
+                               wake_up_interruptible(&info->port.open_wait);
                        else {
                                if ( debug_level >= DEBUG_LEVEL_ISR )
                                        printk("doing serial hangup...");
-                               if (info->tty)
-                                       tty_hangup(info->tty);
+                               if (info->port.tty)
+                                       tty_hangup(info->port.tty);
                        }
                }
 
-               if ( (info->flags & ASYNC_CTS_FLOW) &&
+               if ( (info->port.flags & ASYNC_CTS_FLOW) &&
                     (status & MISCSTATUS_CTS_LATCHED) ) {
-                       if ( info->tty ) {
-                               if (info->tty->hw_stopped) {
+                       if ( info->port.tty ) {
+                               if (info->port.tty->hw_stopped) {
                                        if (status & SerialSignal_CTS) {
                                                if ( debug_level >= DEBUG_LEVEL_ISR )
                                                        printk("CTS tx start...");
-                                               info->tty->hw_stopped = 0;
+                                               info->port.tty->hw_stopped = 0;
                                                tx_start(info);
                                                info->pending_bh |= BH_TRANSMIT;
                                                return;
@@ -2568,7 +2577,7 @@ static void isr_io_pin( SLMP_INFO *info, u16 status )
                                        if (!(status & SerialSignal_CTS)) {
                                                if ( debug_level >= DEBUG_LEVEL_ISR )
                                                        printk("CTS tx stop...");
-                                               info->tty->hw_stopped = 1;
+                                               info->port.tty->hw_stopped = 1;
                                                tx_stop(info);
                                        }
                                }
@@ -2684,7 +2693,7 @@ static irqreturn_t synclinkmp_interrupt(int dummy, void *dev_id)
                 * do not request bottom half processing if the
                 * device is not open in a normal mode.
                 */
-               if ( port && (port->count || port->netcount) &&
+               if ( port && (port->port.count || port->netcount) &&
                     port->pending_bh && !port->bh_running &&
                     !port->bh_requested ) {
                        if ( debug_level >= DEBUG_LEVEL_ISR )
@@ -2710,7 +2719,7 @@ static int startup(SLMP_INFO * info)
        if ( debug_level >= DEBUG_LEVEL_INFO )
                printk("%s(%d):%s tx_releaseup()\n",__FILE__,__LINE__,info->device_name);
 
-       if (info->flags & ASYNC_INITIALIZED)
+       if (info->port.flags & ASYNC_INITIALIZED)
                return 0;
 
        if (!info->tx_buf) {
@@ -2733,10 +2742,10 @@ static int startup(SLMP_INFO * info)
 
        mod_timer(&info->status_timer, jiffies + msecs_to_jiffies(10));
 
-       if (info->tty)
-               clear_bit(TTY_IO_ERROR, &info->tty->flags);
+       if (info->port.tty)
+               clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
 
-       info->flags |= ASYNC_INITIALIZED;
+       info->port.flags |= ASYNC_INITIALIZED;
 
        return 0;
 }
@@ -2747,7 +2756,7 @@ static void shutdown(SLMP_INFO * info)
 {
        unsigned long flags;
 
-       if (!(info->flags & ASYNC_INITIALIZED))
+       if (!(info->port.flags & ASYNC_INITIALIZED))
                return;
 
        if (debug_level >= DEBUG_LEVEL_INFO)
@@ -2769,17 +2778,17 @@ static void shutdown(SLMP_INFO * info)
 
        reset_port(info);
 
-       if (!info->tty || info->tty->termios->c_cflag & HUPCL) {
+       if (!info->port.tty || info->port.tty->termios->c_cflag & HUPCL) {
                info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
                set_signals(info);
        }
 
        spin_unlock_irqrestore(&info->lock,flags);
 
-       if (info->tty)
-               set_bit(TTY_IO_ERROR, &info->tty->flags);
+       if (info->port.tty)
+               set_bit(TTY_IO_ERROR, &info->port.tty->flags);
 
-       info->flags &= ~ASYNC_INITIALIZED;
+       info->port.flags &= ~ASYNC_INITIALIZED;
 }
 
 static void program_hw(SLMP_INFO *info)
@@ -2810,7 +2819,7 @@ static void program_hw(SLMP_INFO *info)
 
        get_signals(info);
 
-       if (info->netcount || (info->tty && info->tty->termios->c_cflag & CREAD) )
+       if (info->netcount || (info->port.tty && info->port.tty->termios->c_cflag & CREAD) )
                rx_start(info);
 
        spin_unlock_irqrestore(&info->lock,flags);
@@ -2823,14 +2832,14 @@ static void change_params(SLMP_INFO *info)
        unsigned cflag;
        int bits_per_char;
 
-       if (!info->tty || !info->tty->termios)
+       if (!info->port.tty || !info->port.tty->termios)
                return;
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s change_params()\n",
                         __FILE__,__LINE__, info->device_name );
 
-       cflag = info->tty->termios->c_cflag;
+       cflag = info->port.tty->termios->c_cflag;
 
        /* if B0 rate (hangup) specified then negate DTR and RTS */
        /* otherwise assert DTR and RTS */
@@ -2878,7 +2887,7 @@ static void change_params(SLMP_INFO *info)
         * current data rate.
         */
        if (info->params.data_rate <= 460800) {
-               info->params.data_rate = tty_get_baud_rate(info->tty);
+               info->params.data_rate = tty_get_baud_rate(info->port.tty);
        }
 
        if ( info->params.data_rate ) {
@@ -2888,30 +2897,30 @@ static void change_params(SLMP_INFO *info)
        info->timeout += HZ/50;         /* Add .02 seconds of slop */
 
        if (cflag & CRTSCTS)
-               info->flags |= ASYNC_CTS_FLOW;
+               info->port.flags |= ASYNC_CTS_FLOW;
        else
-               info->flags &= ~ASYNC_CTS_FLOW;
+               info->port.flags &= ~ASYNC_CTS_FLOW;
 
        if (cflag & CLOCAL)
-               info->flags &= ~ASYNC_CHECK_CD;
+               info->port.flags &= ~ASYNC_CHECK_CD;
        else
-               info->flags |= ASYNC_CHECK_CD;
+               info->port.flags |= ASYNC_CHECK_CD;
 
        /* process tty input control flags */
 
        info->read_status_mask2 = OVRN;
-       if (I_INPCK(info->tty))
+       if (I_INPCK(info->port.tty))
                info->read_status_mask2 |= PE | FRME;
-       if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
+       if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))
                info->read_status_mask1 |= BRKD;
-       if (I_IGNPAR(info->tty))
+       if (I_IGNPAR(info->port.tty))
                info->ignore_status_mask2 |= PE | FRME;
-       if (I_IGNBRK(info->tty)) {
+       if (I_IGNBRK(info->port.tty)) {
                info->ignore_status_mask1 |= BRKD;
                /* If ignoring parity and break indicators, ignore
                 * overruns too.  (For real raw support).
                 */
-               if (I_IGNPAR(info->tty))
+               if (I_IGNPAR(info->port.tty))
                        info->ignore_status_mask2 |= OVRN;
        }
 
@@ -3331,7 +3340,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
        if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
                /* nonblock mode is set or port is not enabled */
                /* just verify that callout device is not active */
-               info->flags |= ASYNC_NORMAL_ACTIVE;
+               info->port.flags |= ASYNC_NORMAL_ACTIVE;
                return 0;
        }
 
@@ -3340,25 +3349,25 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 
        /* Wait for carrier detect and the line to become
         * free (i.e., not in use by the callout).  While we are in
-        * this loop, info->count is dropped by one, so that
+        * this loop, info->port.count is dropped by one, so that
         * close() knows when to free things.  We restore it upon
         * exit, either normal or abnormal.
         */
 
        retval = 0;
-       add_wait_queue(&info->open_wait, &wait);
+       add_wait_queue(&info->port.open_wait, &wait);
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s block_til_ready() before block, count=%d\n",
-                        __FILE__,__LINE__, tty->driver->name, info->count );
+                        __FILE__,__LINE__, tty->driver->name, info->port.count );
 
        spin_lock_irqsave(&info->lock, flags);
        if (!tty_hung_up_p(filp)) {
                extra_count = true;
-               info->count--;
+               info->port.count--;
        }
        spin_unlock_irqrestore(&info->lock, flags);
-       info->blocked_open++;
+       info->port.blocked_open++;
 
        while (1) {
                if ((tty->termios->c_cflag & CBAUD)) {
@@ -3370,8 +3379,8 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 
                set_current_state(TASK_INTERRUPTIBLE);
 
-               if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){
-                       retval = (info->flags & ASYNC_HUP_NOTIFY) ?
+               if (tty_hung_up_p(filp) || !(info->port.flags & ASYNC_INITIALIZED)){
+                       retval = (info->port.flags & ASYNC_HUP_NOTIFY) ?
                                        -EAGAIN : -ERESTARTSYS;
                        break;
                }
@@ -3380,7 +3389,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
                get_signals(info);
                spin_unlock_irqrestore(&info->lock,flags);
 
-               if (!(info->flags & ASYNC_CLOSING) &&
+               if (!(info->port.flags & ASYNC_CLOSING) &&
                    (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {
                        break;
                }
@@ -3392,24 +3401,24 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 
                if (debug_level >= DEBUG_LEVEL_INFO)
                        printk("%s(%d):%s block_til_ready() count=%d\n",
-                                __FILE__,__LINE__, tty->driver->name, info->count );
+                                __FILE__,__LINE__, tty->driver->name, info->port.count );
 
                schedule();
        }
 
        set_current_state(TASK_RUNNING);
-       remove_wait_queue(&info->open_wait, &wait);
+       remove_wait_queue(&info->port.open_wait, &wait);
 
        if (extra_count)
-               info->count++;
-       info->blocked_open--;
+               info->port.count++;
+       info->port.blocked_open--;
 
        if (debug_level >= DEBUG_LEVEL_INFO)
                printk("%s(%d):%s block_til_ready() after, count=%d\n",
-                        __FILE__,__LINE__, tty->driver->name, info->count );
+                        __FILE__,__LINE__, tty->driver->name, info->port.count );
 
        if (!retval)
-               info->flags |= ASYNC_NORMAL_ACTIVE;
+               info->port.flags |= ASYNC_NORMAL_ACTIVE;
 
        return retval;
 }
@@ -3626,7 +3635,8 @@ static int claim_resources(SLMP_INFO *info)
        else
                info->sca_statctrl_requested = true;
 
-       info->memory_base = ioremap(info->phys_memory_base,SCA_MEM_SIZE);
+       info->memory_base = ioremap_nocache(info->phys_memory_base,
+                                                               SCA_MEM_SIZE);
        if (!info->memory_base) {
                printk( "%s(%d):%s Cant map shared memory, MemAddr=%08X\n",
                        __FILE__,__LINE__,info->device_name, info->phys_memory_base );
@@ -3634,7 +3644,7 @@ static int claim_resources(SLMP_INFO *info)
                goto errout;
        }
 
-       info->lcr_base = ioremap(info->phys_lcr_base,PAGE_SIZE);
+       info->lcr_base = ioremap_nocache(info->phys_lcr_base, PAGE_SIZE);
        if (!info->lcr_base) {
                printk( "%s(%d):%s Cant map LCR memory, MemAddr=%08X\n",
                        __FILE__,__LINE__,info->device_name, info->phys_lcr_base );
@@ -3643,7 +3653,7 @@ static int claim_resources(SLMP_INFO *info)
        }
        info->lcr_base += info->lcr_offset;
 
-       info->sca_base = ioremap(info->phys_sca_base,PAGE_SIZE);
+       info->sca_base = ioremap_nocache(info->phys_sca_base, PAGE_SIZE);
        if (!info->sca_base) {
                printk( "%s(%d):%s Cant map SCA memory, MemAddr=%08X\n",
                        __FILE__,__LINE__,info->device_name, info->phys_sca_base );
@@ -3652,7 +3662,8 @@ static int claim_resources(SLMP_INFO *info)
        }
        info->sca_base += info->sca_offset;
 
-       info->statctrl_base = ioremap(info->phys_statctrl_base,PAGE_SIZE);
+       info->statctrl_base = ioremap_nocache(info->phys_statctrl_base,
+                                                               PAGE_SIZE);
        if (!info->statctrl_base) {
                printk( "%s(%d):%s Cant map SCA Status/Control memory, MemAddr=%08X\n",
                        __FILE__,__LINE__,info->device_name, info->phys_statctrl_base );
@@ -3789,13 +3800,12 @@ static SLMP_INFO *alloc_dev(int adapter_num, int port_num, struct pci_dev *pdev)
                printk("%s(%d) Error can't allocate device instance data for adapter %d, port %d\n",
                        __FILE__,__LINE__, adapter_num, port_num);
        } else {
+               tty_port_init(&info->port);
                info->magic = MGSL_MAGIC;
                INIT_WORK(&info->task, bh_handler);
                info->max_frame_size = 4096;
-               info->close_delay = 5*HZ/10;
-               info->closing_wait = 30*HZ;
-               init_waitqueue_head(&info->open_wait);
-               init_waitqueue_head(&info->close_wait);
+               info->port.close_delay = 5*HZ/10;
+               info->port.closing_wait = 30*HZ;
                init_waitqueue_head(&info->status_event_wait_q);
                init_waitqueue_head(&info->event_wait_q);
                spin_lock_init(&info->netlock);
@@ -4866,7 +4876,7 @@ static bool rx_get_frame(SLMP_INFO *info)
        unsigned int framesize = 0;
        bool ReturnCode = false;
        unsigned long flags;
-       struct tty_struct *tty = info->tty;
+       struct tty_struct *tty = info->port.tty;
        unsigned char addr_field = 0xff;
        SCADESC *desc;
        SCADESC_EX *desc_ex;
@@ -4964,9 +4974,8 @@ CheckAgain:
                framesize = 0;
 #if SYNCLINK_GENERIC_HDLC
                {
-                       struct net_device_stats *stats = hdlc_stats(info->netdev);
-                       stats->rx_errors++;
-                       stats->rx_frame_errors++;
+                       info->netdev->stats.rx_errors++;
+                       info->netdev->stats.rx_frame_errors++;
                }
 #endif
        }
@@ -5274,11 +5283,11 @@ static bool loopback_test(SLMP_INFO *info)
        bool rc = false;
        unsigned long flags;
 
-       struct tty_struct *oldtty = info->tty;
+       struct tty_struct *oldtty = info->port.tty;
        u32 speed = info->params.clock_speed;
 
        info->params.clock_speed = 3686400;
-       info->tty = NULL;
+       info->port.tty = NULL;
 
        /* assume failure */
        info->init_error = DiagStatus_DmaFailure;
@@ -5322,7 +5331,7 @@ static bool loopback_test(SLMP_INFO *info)
        spin_unlock_irqrestore(&info->lock,flags);
 
        info->params.clock_speed = speed;
-       info->tty = oldtty;
+       info->port.tty = oldtty;
 
        return rc;
 }