lantiq: fix xrx200 switch carrier state
In conditions where none of the switch ports is connected during boot, the priv->port[i].link != priv->port[i].phydev->link condition is false since both link values are equal (false). The carrier of the switch netdev is never set to off and the link state reported by ip is UNKNOWN. Turn the carrier off if none of the switch ports has a link, regardless whether something has been changed. Add a check for a carrier to prevent unnecessary calls to netif_carrier_off() if the carrier is already off. Based on a patch send by Martin Schiller. Signed-off-by: Mathias Kresin <dev@kresin.me>
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1 changed files with 3 additions and 4 deletions
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@ -209,7 +209,7 @@ Subject: [PATCH 25/36] NET: MIPS: lantiq: adds xrx200-net
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+};
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--- /dev/null
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+++ b/drivers/net/ethernet/lantiq_xrx200.c
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@@ -0,0 +1,1852 @@
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@@ -0,0 +1,1851 @@
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+/*
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 as published
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@ -1460,7 +1460,7 @@ Subject: [PATCH 25/36] NET: MIPS: lantiq: adds xrx200-net
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+static void xrx200_mdio_link(struct net_device *dev)
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+{
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+ struct xrx200_priv *priv = netdev_priv(dev);
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+ bool changed = false, link = false;
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+ bool link = false;
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+ int i;
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+
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+ for (i = 0; i < priv->num_port; i++) {
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@ -1471,7 +1471,6 @@ Subject: [PATCH 25/36] NET: MIPS: lantiq: adds xrx200-net
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+ link = true;
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+
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+ if (priv->port[i].link != priv->port[i].phydev->link) {
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+ changed = true;
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+ xrx200_gmac_update(&priv->port[i]);
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+ priv->port[i].link = priv->port[i].phydev->link;
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+ netdev_info(dev, "port %d %s link\n",
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@ -1479,7 +1478,7 @@ Subject: [PATCH 25/36] NET: MIPS: lantiq: adds xrx200-net
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+ (priv->port[i].link)?("got"):("lost"));
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+ }
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+ }
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+ if (changed && !link)
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+ if (netif_carrier_ok(dev) && !link)
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+ netif_carrier_off(dev);
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+}
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+
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