Merge branches 'acpi-scan', 'acpi-processor' and 'acpi-assorted'

[cascardo/linux.git] / drivers / net / phy / phy.c

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index b2197b5..34fe339 100644 (file)
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -811,6 +811,7 @@ 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);
 
@@ -896,11 +897,18 @@ 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);
@@ -1030,10 +1038,14 @@ int phy_read_mmd_indirect(struct phy_device *phydev, int prtad,
        int value = -1;
 
        if (phydrv->read_mmd_indirect == NULL) {
-               mmd_phy_indirect(phydev->bus, prtad, devad, addr);
+               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);
        }
@@ -1063,10 +1075,14 @@ 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);
+               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);
        }