r6040: recover from transmit timeout

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

1 files changed, 33 insertions, 24 deletions

diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index 24f42d23156c..7ca6a934524f 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -61,7 +61,6 @@
 
 /* Time in jiffies before concluding the transmitter is hung. */
 #define TX_TIMEOUT      (6000 * HZ / 1000)
-#define TIMER_WUT       (jiffies + HZ * 1)/* timer wakeup time : 1 second */
 
 /* RDC MAC I/O Size */
 #define R6040_IO_SIZE   256
@@ -266,19 +265,6 @@ static void r6040_free_rxbufs(struct net_device *dev)
         }
 }
 
-static void r6040_tx_timeout(struct net_device *dev)
-{
-        struct r6040_private *priv = netdev_priv(dev);
-
-        disable_irq(dev->irq);
-        napi_disable(&priv->napi);
-        spin_lock(&priv->lock);
-        dev->stats.tx_errors++;
-        spin_unlock(&priv->lock);
-
-        netif_stop_queue(dev);
-}
-
 static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
                                  dma_addr_t desc_dma, int size)
 {
@@ -350,6 +336,34 @@ static void r6040_alloc_rxbufs(struct net_device *dev)
         iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
 }
 
+static void r6040_tx_timeout(struct net_device *dev)
+{
+        struct r6040_private *priv = netdev_priv(dev);
+        void __iomem *ioaddr = priv->base;
+
+        printk(KERN_WARNING "%s: transmit timed out, status %4.4x, PHY status "
+                "%4.4x\n",
+                dev->name, ioread16(ioaddr + MIER),
+                mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
+
+        disable_irq(dev->irq);
+        napi_disable(&priv->napi);
+        spin_lock(&priv->lock);
+        /* Clear all descriptors */
+        r6040_free_txbufs(dev);
+        r6040_free_rxbufs(dev);
+        r6040_alloc_txbufs(dev);
+        r6040_alloc_rxbufs(dev);
+
+        /* Reset MAC */
+        iowrite16(MAC_RST, ioaddr + MCR1);
+        spin_unlock(&priv->lock);
+        enable_irq(dev->irq);
+
+        dev->stats.tx_errors++;
+        netif_wake_queue(dev);
+}
+
 static struct net_device_stats *r6040_get_stats(struct net_device *dev)
 {
         struct r6040_private *priv = netdev_priv(dev);
@@ -719,8 +733,7 @@ static void r6040_timer(unsigned long data)
         }
 
         /* Timer active again */
-        lp->timer.expires = TIMER_WUT;
-        add_timer(&lp->timer);
+        mod_timer(&lp->timer, jiffies + round_jiffies(HZ));
 }
 
 /* Read/set MAC address routines */
@@ -776,14 +789,10 @@ static int r6040_open(struct net_device *dev)
         napi_enable(&lp->napi);
         netif_start_queue(dev);
 
-        if (lp->switch_sig != ICPLUS_PHY_ID) {
-                /* set and active a timer process */
-                init_timer(&lp->timer);
-                lp->timer.expires = TIMER_WUT;
-                lp->timer.data = (unsigned long)dev;
-                lp->timer.function = &r6040_timer;
-                add_timer(&lp->timer);
-        }
+        /* set and active a timer process */
+        setup_timer(&lp->timer, r6040_timer, (unsigned long) dev);
+        if (lp->switch_sig != ICPLUS_PHY_ID)
+                mod_timer(&lp->timer, jiffies + HZ);
         return 0;
 }