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Fixed at91 ethernet driver for dm9161a PHY interrupt issue
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7493 3c298f89-4303-0410-b956-a3cf2f4a3e73
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target/linux/at91-2.6/patches/010-dm9161a-phyfix.patch
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28
target/linux/at91-2.6/patches/010-dm9161a-phyfix.patch
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@ -0,0 +1,28 @@
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--- linux-2.6.21.1/drivers/net/arm/at91_ether.c.old 2007-06-04 18:15:49.000000000 +0200
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+++ linux-2.6.21.1/drivers/net/arm/at91_ether.c 2007-06-04 18:10:36.000000000 +0200
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@@ -146,6 +146,7 @@
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struct at91_private *lp = netdev_priv(dev);
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unsigned int bmsr, bmcr, lpa, mac_cfg;
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unsigned int speed, duplex;
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+ unsigned long timeout = jiffies + HZ;
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if (!mii_link_ok(&lp->mii)) { /* no link */
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netif_carrier_off(dev);
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@@ -158,8 +159,15 @@
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read_phy(lp->phy_address, MII_BMSR, &bmsr);
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read_phy(lp->phy_address, MII_BMCR, &bmcr);
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if (bmcr & BMCR_ANENABLE) { /* AutoNegotiation is enabled */
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- if (!(bmsr & BMSR_ANEGCOMPLETE))
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- return; /* Do nothing - another interrupt generated when negotiation complete */
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+ while (!(bmsr & BMSR_ANEGCOMPLETE)) {
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+ if (time_after(jiffies, timeout)) {
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+ printk("at91_ether: Auto-negotiate timeout\n");
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+ return;
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+ }
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+ read_phy(lp->phy_address, MII_BMSR, &bmsr);
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+ read_phy(lp->phy_address, MII_BMCR, &bmcr);
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+ cpu_relax();
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+ }
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read_phy(lp->phy_address, MII_LPA, &lpa);
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if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF)) speed = SPEED_100;
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