From: Srinivas Kandagatla Date: Tue, 18 Oct 2011 00:01:18 +0000 (+0000) Subject: stmmac: Stop advertising 1000Base capabilties for non GMII iface (V4). X-Git-Tag: v3.2-rc1~182^2~59 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=79ee1dc32b945ad71248332f3a3b355332ad3376;p=pandora-kernel.git stmmac: Stop advertising 1000Base capabilties for non GMII iface (V4). This patch stops advertising 1000Base capablities if GMAC is either configured for MII or RMII mode and on board there is a GPHY plugged on. Without this patch if an GBit switch is connected on MII interface, Ethernet stops working at all. Discovered as part of https://bugzilla.stlinux.com/show_bug.cgi?id=14148 triage Signed-off-by: Srinivas Kandagatla Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 87a6b2e59e04..ae5debb1f5cd 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -304,7 +304,7 @@ static int stmmac_init_phy(struct net_device *dev) struct phy_device *phydev; char phy_id[MII_BUS_ID_SIZE + 3]; char bus_id[MII_BUS_ID_SIZE]; - + int interface = priv->plat->interface; priv->oldlink = 0; priv->speed = 0; priv->oldduplex = -1; @@ -314,14 +314,21 @@ static int stmmac_init_phy(struct net_device *dev) priv->plat->phy_addr); pr_debug("stmmac_init_phy: trying to attach to %s\n", phy_id); - phydev = phy_connect(dev, phy_id, &stmmac_adjust_link, 0, - priv->plat->interface); + phydev = phy_connect(dev, phy_id, &stmmac_adjust_link, 0, interface); if (IS_ERR(phydev)) { pr_err("%s: Could not attach to PHY\n", dev->name); return PTR_ERR(phydev); } + /* Stop Advertising 1000BASE Capability if interface is not GMII */ + if ((interface) && ((interface == PHY_INTERFACE_MODE_MII) || + (interface == PHY_INTERFACE_MODE_RMII))) { + phydev->supported &= (PHY_BASIC_FEATURES | SUPPORTED_Pause | + SUPPORTED_Asym_Pause); + priv->phydev->advertising = priv->phydev->supported; + } + /* * Broken HW is sometimes missing the pull-up resistor on the * MDIO line, which results in reads to non-existent devices returning