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smsc75xx: fix phy interrupt acknowledge 

smsc75xx phy interrupt acknowledge needs an mdio_write to clear
PHY_INT_SRC instead of just a read like in smsc95xx.

Signed-off-by: Stephane Fillod <fillods@users.sf.net>
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Glendinning 2012-04-30 07:56:54 +00:00 committed by David S. Miller
parent 8a1d59d79f
commit b140504aa3
1 changed files with 7 additions and 5 deletions
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12
drivers/net/usb/smsc75xx.c
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@ -508,9 +508,10 @@ static int smsc75xx_link_reset(struct usbnet *dev)
u16 lcladv, rmtadv;
int ret;
/* clear interrupt status */
/* read and write to clear phy interrupt status */
ret = smsc75xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC);
check_warn_return(ret, "Error reading PHY_INT_SRC");
smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 0xffff);
ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL);
check_warn_return(ret, "Error writing INT_STS");
@ -643,7 +644,7 @@ static int smsc75xx_set_mac_address(struct usbnet *dev)
static int smsc75xx_phy_initialize(struct usbnet *dev)
{
int bmcr, timeout = 0;
int bmcr, ret, timeout = 0;
/* Initialize MII structure */
dev->mii.dev = dev->net;
@ -672,9 +673,10 @@ static int smsc75xx_phy_initialize(struct usbnet *dev)
ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP |
ADVERTISE_PAUSE_ASYM);
/* read to clear */
smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
check_warn_return(bmcr, "Error reading PHY_INT_SRC");
/* read and write to clear phy interrupt status */
ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC);
check_warn_return(ret, "Error reading PHY_INT_SRC");
smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff);
smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK,
PHY_INT_MASK_DEFAULT);