1 files changed, 21 insertions, 16 deletions

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index daf961ab68bc..0a551d8f5d95 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1151,14 +1151,7 @@ stopped:
 
         /* reset the Rx prefetch unit */
         sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
-
-        /* Reset the RAM Buffer receive queue */
-        sky2_write8(hw, RB_ADDR(rxq, RB_CTRL), RB_RST_SET);
-
-        /* Reset Rx MAC FIFO */
-        sky2_write8(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), GMF_RST_SET);
-
-        sky2_read8(hw, B0_CTST);
+        mmiowb();
 }
 
 /* Clean out receive buffer area, assumes receiver hardware stopped */
@@ -1495,6 +1488,8 @@ static int sky2_up(struct net_device *dev)
         sky2_set_vlan_mode(hw, port, sky2->vlgrp != NULL);
 #endif
 
+        sky2->restarting = 0;
+
         err = sky2_rx_start(sky2);
         if (err)
                 goto err_out;
@@ -1507,6 +1502,9 @@ static int sky2_up(struct net_device *dev)
 
         sky2_set_multicast(dev);
 
+        /* wake queue incase we are restarting */
+        netif_wake_queue(dev);
+
         if (netif_msg_ifup(sky2))
                 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
         return 0;
@@ -1540,6 +1538,8 @@ static inline int tx_dist(unsigned tail, unsigned head)
 /* Number of list elements available for next tx */
 static inline int tx_avail(const struct sky2_port *sky2)
 {
+        if (unlikely(sky2->restarting))
+                return 0;
         return sky2->tx_pending - tx_dist(sky2->tx_cons, sky2->tx_prod);
 }
 
@@ -1825,11 +1825,9 @@ static int sky2_down(struct net_device *dev)
         if (netif_msg_ifdown(sky2))
                 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
 
-        /* Disable port IRQ */
-        imask = sky2_read32(hw, B0_IMSK);
-        imask &= ~portirq_msk[port];
-        sky2_write32(hw, B0_IMSK, imask);
-        sky2_read32(hw, B0_IMSK);
+        /* explicitly shut off tx incase we're restarting */
+        sky2->restarting = 1;
+        netif_tx_disable(dev);
 
         /* Force flow control off */
         sky2_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
@@ -1870,8 +1868,6 @@ static int sky2_down(struct net_device *dev)
 
         sky2_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
 
-        sky2_rx_stop(sky2);
-
         sky2_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
         sky2_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
 
@@ -1881,6 +1877,14 @@ static int sky2_down(struct net_device *dev)
         sky2_write32(hw, STAT_ISR_TIMER_CNT, 0);
         sky2_read8(hw, STAT_ISR_TIMER_CTRL);
 
+        sky2_rx_stop(sky2);
+
+        /* Disable port IRQ */
+        imask = sky2_read32(hw, B0_IMSK);
+        imask &= ~portirq_msk[port];
+        sky2_write32(hw, B0_IMSK, imask);
+        sky2_read32(hw, B0_IMSK);
+
         synchronize_irq(hw->pdev->irq);
         napi_synchronize(&hw->napi);
 
@@ -2366,7 +2370,7 @@ static inline void sky2_tx_done(struct net_device *dev, u16 last)
 {
         struct sky2_port *sky2 = netdev_priv(dev);
 
-        if (netif_running(dev)) {
+        if (likely(netif_running(dev) && !sky2->restarting)) {
                 netif_tx_lock(dev);
                 sky2_tx_complete(sky2, last);
                 netif_tx_unlock(dev);
@@ -4290,6 +4294,7 @@ static __devinit struct net_device *sky2_init_netdev(struct sky2_hw *hw,
         spin_lock_init(&sky2->phy_lock);
         sky2->tx_pending = TX_DEF_PENDING;
         sky2->rx_pending = RX_DEF_PENDING;
+        sky2->restarting = 0;
 
         hw->dev[port] = dev;