The patch titled sundance: set carrier status on link change events has been added to the -mm tree. Its filename is sundance-set-carrier-status-on-link-change-events.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: sundance: set carrier status on link change events From: Dan Nicholson <dbn.lists@xxxxxxxxx> Check if the link is available when a changed interrupt has been received and set the carrier status appropriately. The code is copied nearly verbatim from the dl2k module. The link status could be used in more places in the driver, but this is enough to get the carrier status reported to userspace. Fixes kernel bug #7487: http://bugzilla.kernel.org/show_bug.cgi?id=7487 Signed-off-by: Dan Nicholson <dbn.lists@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/net/sundance.c | 94 +++++++++++++++++++++++++-------------- 1 file changed, 61 insertions(+), 33 deletions(-) diff -puN drivers/net/sundance.c~sundance-set-carrier-status-on-link-change-events drivers/net/sundance.c --- a/drivers/net/sundance.c~sundance-set-carrier-status-on-link-change-events +++ a/drivers/net/sundance.c @@ -409,6 +409,7 @@ static int change_mtu(struct net_device static int eeprom_read(void __iomem *ioaddr, int location); static int mdio_read(struct net_device *dev, int phy_id, int location); static void mdio_write(struct net_device *dev, int phy_id, int location, int value); +static int mdio_wait_link (struct net_device *dev, int wait); static int netdev_open(struct net_device *dev); static void check_duplex(struct net_device *dev); static void netdev_timer(unsigned long data); @@ -785,6 +786,24 @@ static void mdio_write(struct net_device return; } +static int mdio_wait_link (struct net_device *dev, int wait) +{ + int bmsr; + int phy_id; + struct netdev_private *np; + + np = netdev_priv(dev); + phy_id = np->phys[0]; + + do { + bmsr = mdio_read (dev, phy_id, MII_BMSR); + if (bmsr & 0x0004) + return 0; + mdelay (1); + } while (--wait > 0); + return -1; +} + static int netdev_open(struct net_device *dev) { struct netdev_private *np = netdev_priv(dev); @@ -1393,41 +1412,50 @@ static void netdev_error(struct net_devi int speed; if (intr_status & LinkChange) { - if (np->an_enable) { - mii_advertise = mdio_read (dev, np->phys[0], MII_ADVERTISE); - mii_lpa= mdio_read (dev, np->phys[0], MII_LPA); - mii_advertise &= mii_lpa; - printk (KERN_INFO "%s: Link changed: ", dev->name); - if (mii_advertise & ADVERTISE_100FULL) { - np->speed = 100; - printk ("100Mbps, full duplex\n"); - } else if (mii_advertise & ADVERTISE_100HALF) { - np->speed = 100; - printk ("100Mbps, half duplex\n"); - } else if (mii_advertise & ADVERTISE_10FULL) { - np->speed = 10; - printk ("10Mbps, full duplex\n"); - } else if (mii_advertise & ADVERTISE_10HALF) { - np->speed = 10; - printk ("10Mbps, half duplex\n"); - } else - printk ("\n"); + if (mdio_wait_link (dev, 10) == 0) { + printk (KERN_INFO "%s: Link up\n", dev->name); + if (np->an_enable) { + mii_advertise = mdio_read (dev, np->phys[0], + MII_ADVERTISE); + mii_lpa= mdio_read (dev, np->phys[0], MII_LPA); + mii_advertise &= mii_lpa; + printk (KERN_INFO "%s: Link changed: ", + dev->name); + if (mii_advertise & ADVERTISE_100FULL) { + np->speed = 100; + printk ("100Mbps, full duplex\n"); + } else if (mii_advertise & ADVERTISE_100HALF) { + np->speed = 100; + printk ("100Mbps, half duplex\n"); + } else if (mii_advertise & ADVERTISE_10FULL) { + np->speed = 10; + printk ("10Mbps, full duplex\n"); + } else if (mii_advertise & ADVERTISE_10HALF) { + np->speed = 10; + printk ("10Mbps, half duplex\n"); + } else + printk ("\n"); + } else { + mii_ctl = mdio_read (dev, np->phys[0], MII_BMCR); + speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10; + np->speed = speed; + printk (KERN_INFO "%s: Link changed: %dMbps ,", + dev->name, speed); + printk ("%s duplex.\n", (mii_ctl & BMCR_FULLDPLX) ? + "full" : "half"); + } + check_duplex (dev); + if (np->flowctrl && np->mii_if.full_duplex) { + iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200, + ioaddr + MulticastFilter1+2); + iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl, + ioaddr + MACCtrl0); + } + netif_carrier_on(dev); } else { - mii_ctl = mdio_read (dev, np->phys[0], MII_BMCR); - speed = (mii_ctl & BMCR_SPEED100) ? 100 : 10; - np->speed = speed; - printk (KERN_INFO "%s: Link changed: %dMbps ,", - dev->name, speed); - printk ("%s duplex.\n", (mii_ctl & BMCR_FULLDPLX) ? - "full" : "half"); - } - check_duplex (dev); - if (np->flowctrl && np->mii_if.full_duplex) { - iowrite16(ioread16(ioaddr + MulticastFilter1+2) | 0x0200, - ioaddr + MulticastFilter1+2); - iowrite16(ioread16(ioaddr + MACCtrl0) | EnbFlowCtrl, - ioaddr + MACCtrl0); + printk (KERN_INFO "%s: Link down\n", dev->name); + netif_carrier_off(dev); } } if (intr_status & StatsMax) { _ Patches currently in -mm which might be from dbn.lists@xxxxxxxxx are sundance-set-carrier-status-on-link-change-events.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html