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Fixed at91 ethernet driver for dm9161a PHY interrupt issue 

SVN-Revision: 7493
lede-17.01
Hamish Guthrie 2007-06-04 17:46:46 +00:00
parent 3266668cae
commit e759465420
1 changed files with 28 additions and 0 deletions
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28
target/linux/at91-2.6/patches/010-dm9161a-phyfix.patch Normal file
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@ -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;