diff options
| -rw-r--r-- | drivers/net/phy/vitesse.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/net/phy/vitesse.c b/drivers/net/phy/vitesse.c index 596222b260d..f39ab76e6f6 100644 --- a/drivers/net/phy/vitesse.c +++ b/drivers/net/phy/vitesse.c @@ -65,7 +65,15 @@ static int vsc824x_config_init(struct phy_device *phydev) static int vsc824x_ack_interrupt(struct phy_device *phydev) { - int err = phy_read(phydev, MII_VSC8244_ISTAT); + int err = 0; + + /* + * Don't bother to ACK the interrupts if interrupts + * are disabled. The 824x cannot clear the interrupts + * if they are disabled. + */ + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) + err = phy_read(phydev, MII_VSC8244_ISTAT); return (err < 0) ? err : 0; } @@ -77,8 +85,19 @@ static int vsc824x_config_intr(struct phy_device *phydev) if (phydev->interrupts == PHY_INTERRUPT_ENABLED) err = phy_write(phydev, MII_VSC8244_IMASK, MII_VSC8244_IMASK_MASK); - else + else { + /* + * The Vitesse PHY cannot clear the interrupt + * once it has disabled them, so we clear them first + */ + err = phy_read(phydev, MII_VSC8244_ISTAT); + + if (err) + return err; + err = phy_write(phydev, MII_VSC8244_IMASK, 0); + } + return err; } |