diff options
Diffstat (limited to 'drivers/net/phy/phy.c')
| -rw-r--r-- | drivers/net/phy/phy.c | 36 |
1 files changed, 26 insertions, 10 deletions
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 84b1fba58ac3..adb48abafc87 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -814,6 +814,7 @@ void phy_state_machine(struct work_struct *work) bool needs_aneg = false, do_suspend = false; enum phy_state old_state; int err = 0; + int old_link; mutex_lock(&phydev->lock); @@ -899,11 +900,18 @@ void phy_state_machine(struct work_struct *work) phydev->adjust_link(phydev->attached_dev); break; case PHY_RUNNING: - /* Only register a CHANGE if we are - * polling or ignoring interrupts + /* Only register a CHANGE if we are polling or ignoring + * interrupts and link changed since latest checking. */ - if (!phy_interrupt_is_valid(phydev)) - phydev->state = PHY_CHANGELINK; + if (!phy_interrupt_is_valid(phydev)) { + old_link = phydev->link; + err = phy_read_status(phydev); + if (err) + break; + + if (old_link != phydev->link) + phydev->state = PHY_CHANGELINK; + } break; case PHY_CHANGELINK: err = phy_read_status(phydev); @@ -1032,11 +1040,15 @@ int phy_read_mmd_indirect(struct phy_device *phydev, int prtad, struct phy_driver *phydrv = phydev->drv; int value = -1; - if (phydrv->read_mmd_indirect == NULL) { - mmd_phy_indirect(phydev->bus, prtad, devad, addr); + if (!phydrv->read_mmd_indirect) { + struct mii_bus *bus = phydev->bus; + + mutex_lock(&bus->mdio_lock); + mmd_phy_indirect(bus, prtad, devad, addr); /* Read the content of the MMD's selected register */ - value = phydev->bus->read(phydev->bus, addr, MII_MMD_DATA); + value = bus->read(bus, addr, MII_MMD_DATA); + mutex_unlock(&bus->mdio_lock); } else { value = phydrv->read_mmd_indirect(phydev, prtad, devad, addr); } @@ -1065,11 +1077,15 @@ void phy_write_mmd_indirect(struct phy_device *phydev, int prtad, { struct phy_driver *phydrv = phydev->drv; - if (phydrv->write_mmd_indirect == NULL) { - mmd_phy_indirect(phydev->bus, prtad, devad, addr); + if (!phydrv->write_mmd_indirect) { + struct mii_bus *bus = phydev->bus; + + mutex_lock(&bus->mdio_lock); + mmd_phy_indirect(bus, prtad, devad, addr); /* Write the data into MMD's selected register */ - phydev->bus->write(phydev->bus, addr, MII_MMD_DATA, data); + bus->write(bus, addr, MII_MMD_DATA, data); + mutex_unlock(&bus->mdio_lock); } else { phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data); } |