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Date: Wed, 21 Nov 2007 15:02:52 -0800 From: akpm@...ux-foundation.org To: jeff@...zik.org Cc: netdev@...r.kernel.org, akpm@...ux-foundation.org, eswierk@...stra.com, aabdulla@...dia.com Subject: [patch 1/8] forcedeth: power down phy when interface is down From: "Ed Swierk" <eswierk@...stra.com> Bring the physical link down when the interface is down by placing the PHY in power-down state, unless WOL is enabled. This mirrors the behavior of other drivers including e1000 and tg3. Signed-off-by: Ed Swierk <eswierk@...stra.com> Cc: Jeff Garzik <jeff@...zik.org> Cc: Ayaz Abdulla <aabdulla@...dia.com> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> --- drivers/net/forcedeth.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff -puN drivers/net/forcedeth.c~forcedeth-power-down-phy-when-interface-is-down drivers/net/forcedeth.c --- a/drivers/net/forcedeth.c~forcedeth-power-down-phy-when-interface-is-down +++ a/drivers/net/forcedeth.c @@ -1312,9 +1312,9 @@ static int phy_init(struct net_device *d /* some phys clear out pause advertisment on reset, set it back */ mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg); - /* restart auto negotiation */ + /* restart auto negotiation, power down phy */ mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ); - mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE); + mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE | BMCR_PDOWN); if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) { return PHY_ERROR; } @@ -4798,6 +4798,10 @@ static int nv_open(struct net_device *de dprintk(KERN_DEBUG "nv_open: begin\n"); + /* power up phy */ + mii_rw(dev, np->phyaddr, MII_BMCR, + mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN); + /* erase previous misconfiguration */ if (np->driver_data & DEV_HAS_POWER_CNTRL) nv_mac_reset(dev); @@ -4980,6 +4984,10 @@ static int nv_close(struct net_device *d if (np->wolenabled) { writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags); nv_start_rx(dev); + } else { + /* power down phy */ + mii_rw(dev, np->phyaddr, MII_BMCR, + mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN); } /* FIXME: power down nic */ _ - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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