arcnet: add netif_carrier_on/off for reconnect

[karo-tx-linux.git] / drivers / net / arcnet / arcnet.c

diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index 4242522ae86b8e4a0a9cd2f21fc99cfeb6aac3a9..6ea963e3b89a1ab1c78ccb4d63c99a16e1bfbe0b 100644 (file)
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -381,6 +381,16 @@ static void arcdev_setup(struct net_device *dev)
        dev->flags = IFF_BROADCAST;
 }
 
+static void arcnet_timer(unsigned long data)
+{
+       struct net_device *dev = (struct net_device *)data;
+
+       if (!netif_carrier_ok(dev)) {
+               netif_carrier_on(dev);
+               netdev_info(dev, "link up\n");
+       }
+}
+
 struct net_device *alloc_arcdev(const char *name)
 {
        struct net_device *dev;
@@ -392,6 +402,9 @@ struct net_device *alloc_arcdev(const char *name)
                struct arcnet_local *lp = netdev_priv(dev);
 
                spin_lock_init(&lp->lock);
+               init_timer(&lp->timer);
+               lp->timer.data = (unsigned long) dev;
+               lp->timer.function = arcnet_timer;
        }
 
        return dev;
@@ -490,7 +503,9 @@ int arcnet_open(struct net_device *dev)
        lp->hw.intmask(dev, lp->intmask);
        arc_printk(D_DEBUG, dev, "%s: %d: %s\n", __FILE__, __LINE__, __func__);
 
+       netif_carrier_off(dev);
        netif_start_queue(dev);
+       mod_timer(&lp->timer, jiffies + msecs_to_jiffies(1000));
 
        arcnet_led_event(dev, ARCNET_LED_EVENT_OPEN);
        return 0;
@@ -507,7 +522,10 @@ int arcnet_close(struct net_device *dev)
        struct arcnet_local *lp = netdev_priv(dev);
 
        arcnet_led_event(dev, ARCNET_LED_EVENT_STOP);
+       del_timer_sync(&lp->timer);
+
        netif_stop_queue(dev);
+       netif_carrier_off(dev);
 
        /* flush TX and disable RX */
        lp->hw.intmask(dev, 0);
@@ -908,6 +926,12 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id)
 
                        arc_printk(D_RECON, dev, "Network reconfiguration detected (status=%Xh)\n",
                                   status);
+                       if (netif_carrier_ok(dev)) {
+                               netif_carrier_off(dev);
+                               netdev_info(dev, "link down\n");
+                       }
+                       mod_timer(&lp->timer, jiffies + msecs_to_jiffies(1000));
+
                        arcnet_led_event(dev, ARCNET_LED_EVENT_RECON);
                        /* MYRECON bit is at bit 7 of diagstatus */
                        if (diagstatus & 0x80)
@@ -959,6 +983,7 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id)
                        lp->num_recons = lp->network_down = 0;
 
                        arc_printk(D_DURING, dev, "not recon: clearing counters anyway.\n");
+                       netif_carrier_on(dev);
                }
 
                if (didsomething)