skge: deadlock on tx timeout

[powerpc.git] / drivers / net / skge.c

diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index eea75a4..fad189e 100644 (file)
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -2576,7 +2576,11 @@ static int skge_down(struct net_device *dev)
        skge_led(skge, LED_MODE_OFF);
 
        netif_poll_disable(dev);
+
+       netif_tx_lock_bh(dev);
        skge_tx_clean(dev);
+       netif_tx_unlock_bh(dev);
+
        skge_rx_clean(skge);
 
        kfree(skge->rx_ring.start);
@@ -2721,7 +2725,6 @@ static void skge_tx_clean(struct net_device *dev)
        struct skge_port *skge = netdev_priv(dev);
        struct skge_element *e;
 
-       netif_tx_lock_bh(dev);
        for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
                struct skge_tx_desc *td = e->desc;
                skge_tx_free(skge, e, td->control);
@@ -2730,7 +2733,6 @@ static void skge_tx_clean(struct net_device *dev)
 
        skge->tx_ring.to_clean = e;
        netif_wake_queue(dev);
-       netif_tx_unlock_bh(dev);
 }
 
 static void skge_tx_timeout(struct net_device *dev)
@@ -3275,24 +3277,30 @@ static int skge_set_mac_address(struct net_device *dev, void *p)
        struct skge_hw *hw = skge->hw;
        unsigned port = skge->port;
        const struct sockaddr *addr = p;
+       u16 ctrl;
 
        if (!is_valid_ether_addr(addr->sa_data))
                return -EADDRNOTAVAIL;
 
-       mutex_lock(&hw->phy_mutex);
        memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
-       memcpy_toio(hw->regs + B2_MAC_1 + port*8,
-                   dev->dev_addr, ETH_ALEN);
-       memcpy_toio(hw->regs + B2_MAC_2 + port*8,
-                   dev->dev_addr, ETH_ALEN);
 
-       if (hw->chip_id == CHIP_ID_GENESIS)
-               xm_outaddr(hw, port, XM_SA, dev->dev_addr);
-       else {
-               gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
-               gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
+       /* disable Rx */
+       ctrl = gma_read16(hw, port, GM_GP_CTRL);
+       gma_write16(hw, port, GM_GP_CTRL, ctrl & ~GM_GPCR_RX_ENA);
+
+       memcpy_toio(hw->regs + B2_MAC_1 + port*8, dev->dev_addr, ETH_ALEN);
+       memcpy_toio(hw->regs + B2_MAC_2 + port*8, dev->dev_addr, ETH_ALEN);
+
+       if (netif_running(dev)) {
+               if (hw->chip_id == CHIP_ID_GENESIS)
+                       xm_outaddr(hw, port, XM_SA, dev->dev_addr);
+               else {
+                       gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
+                       gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
+               }
        }
-       mutex_unlock(&hw->phy_mutex);
+
+       gma_write16(hw, port, GM_GP_CTRL, ctrl);
 
        return 0;
 }