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authorhcg <hcg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-06-04 17:46:46 +0000
committerhcg <hcg@3c298f89-4303-0410-b956-a3cf2f4a3e73>2007-06-04 17:46:46 +0000
commit00e5005064eda277a53357efedd85bc7d57675ed (patch)
tree5b425efb15a3c8a7af625d0ca776c252f5bc8fe6
parent3b9260da791f75cbb19111ae2bca464ac48c22b9 (diff)
Fixed at91 ethernet driver for dm9161a PHY interrupt issue
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7493 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--target/linux/at91-2.6/patches/010-dm9161a-phyfix.patch28
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/at91-2.6/patches/010-dm9161a-phyfix.patch b/target/linux/at91-2.6/patches/010-dm9161a-phyfix.patch
new file mode 100644
index 000000000..9ad8c4253
--- /dev/null
+++ b/target/linux/at91-2.6/patches/010-dm9161a-phyfix.patch
@@ -0,0 +1,28 @@
+--- linux-2.6.21.1/drivers/net/arm/at91_ether.c.old 2007-06-04 18:15:49.000000000 +0200
++++ linux-2.6.21.1/drivers/net/arm/at91_ether.c 2007-06-04 18:10:36.000000000 +0200
+@@ -146,6 +146,7 @@
+ struct at91_private *lp = netdev_priv(dev);
+ unsigned int bmsr, bmcr, lpa, mac_cfg;
+ unsigned int speed, duplex;
++ unsigned long timeout = jiffies + HZ;
+
+ if (!mii_link_ok(&lp->mii)) { /* no link */
+ netif_carrier_off(dev);
+@@ -158,8 +159,15 @@
+ read_phy(lp->phy_address, MII_BMSR, &bmsr);
+ read_phy(lp->phy_address, MII_BMCR, &bmcr);
+ if (bmcr & BMCR_ANENABLE) { /* AutoNegotiation is enabled */
+- if (!(bmsr & BMSR_ANEGCOMPLETE))
+- return; /* Do nothing - another interrupt generated when negotiation complete */
++ while (!(bmsr & BMSR_ANEGCOMPLETE)) {
++ if (time_after(jiffies, timeout)) {
++ printk("at91_ether: Auto-negotiate timeout\n");
++ return;
++ }
++ read_phy(lp->phy_address, MII_BMSR, &bmsr);
++ read_phy(lp->phy_address, MII_BMCR, &bmcr);
++ cpu_relax();
++ }
+
+ read_phy(lp->phy_address, MII_LPA, &lpa);
+ if ((lpa & LPA_100FULL) || (lpa & LPA_100HALF)) speed = SPEED_100;