sky2: phy irq on shutdown

When PHY is turned off on shutdown, it causes the IRQ to get stuck on.
Make sure and disable the IRQ first, and if IRQ occurs when device
is not running, don't access PHY because that will hang.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index bd5ccae53879abe8ecadb0c0dddee9472342c7e5..2747e2f74dcb57e23c5b9bd3106e87a7ab9a9b52 100644 (file)
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -1499,6 +1499,11 @@ static int sky2_down(struct net_device *dev)
        /* Stop more packets from being queued */
        netif_stop_queue(dev);
 
+       /* Disable port IRQ */
+       imask = sky2_read32(hw, B0_IMSK);
+       imask &= ~portirq_msk[port];
+       sky2_write32(hw, B0_IMSK, imask);
+
        sky2_gmac_reset(hw, port);
 
        /* Stop transmitter */
@@ -1549,11 +1554,6 @@ static int sky2_down(struct net_device *dev)
        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);
 
-       /* Disable port IRQ */
-       imask = sky2_read32(hw, B0_IMSK);
-       imask &= ~portirq_msk[port];
-       sky2_write32(hw, B0_IMSK, imask);
-
        sky2_phy_power(hw, port, 0);
 
        /* turn off LED's */
@@ -1750,13 +1750,13 @@ static void sky2_phy_intr(struct sky2_hw *hw, unsigned port)
        struct sky2_port *sky2 = netdev_priv(dev);
        u16 istatus, phystat;
 
+       if (!netif_running(dev))
+               return;
+
        spin_lock(&sky2->phy_lock);
        istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
        phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
 
-       if (!netif_running(dev))
-               goto out;
-
        if (netif_msg_intr(sky2))
                printk(KERN_INFO PFX "%s: phy interrupt status 0x%x 0x%x\n",
                       sky2->netdev->name, istatus, phystat);