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authorDavid S. Miller <davem@davemloft.net>2010-01-10 22:55:03 -0800
committerDavid S. Miller <davem@davemloft.net>2010-01-10 22:55:03 -0800
commitd4a66e752d0b19934dd208884f8605fe385aaaa9 (patch)
tree72fb727be1d7636aae9cddfe9aa93ac9dec75daf /drivers/net/phy
parentbdbec4b86ee99b020e159f9bd604003a3ae3b0ab (diff)
parentfa15e99b6bb44aa86b241a43ca8c509e91f80153 (diff)
downloadlinux-d4a66e752d0b19934dd208884f8605fe385aaaa9.tar.bz2
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/benet/be_cmds.h include/linux/sysctl.h
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/broadcom.c4
-rw-r--r--drivers/net/phy/mdio_bus.c72
-rw-r--r--drivers/net/phy/phy_device.c30
3 files changed, 81 insertions, 25 deletions
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index c13cf64095b6..33c4b12a63ba 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -331,8 +331,8 @@ static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
bool clk125en = true;
/* Abort if we are using an untested phy. */
- if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 ||
- BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 ||
+ if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 &&
+ BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 &&
BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M)
return;
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index bd4e8d72dc08..e17b70291bbc 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -264,6 +264,8 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv)
(phydev->phy_id & phydrv->phy_id_mask));
}
+#ifdef CONFIG_PM
+
static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
{
struct device_driver *drv = phydev->dev.driver;
@@ -295,34 +297,88 @@ static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
return true;
}
-/* Suspend and resume. Copied from platform_suspend and
- * platform_resume
- */
-static int mdio_bus_suspend(struct device * dev, pm_message_t state)
+static int mdio_bus_suspend(struct device *dev)
{
struct phy_driver *phydrv = to_phy_driver(dev->driver);
struct phy_device *phydev = to_phy_device(dev);
+ /*
+ * We must stop the state machine manually, otherwise it stops out of
+ * control, possibly with the phydev->lock held. Upon resume, netdev
+ * may call phy routines that try to grab the same lock, and that may
+ * lead to a deadlock.
+ */
+ if (phydev->attached_dev)
+ phy_stop_machine(phydev);
+
if (!mdio_bus_phy_may_suspend(phydev))
return 0;
+
return phydrv->suspend(phydev);
}
-static int mdio_bus_resume(struct device * dev)
+static int mdio_bus_resume(struct device *dev)
{
struct phy_driver *phydrv = to_phy_driver(dev->driver);
struct phy_device *phydev = to_phy_device(dev);
+ int ret;
if (!mdio_bus_phy_may_suspend(phydev))
+ goto no_resume;
+
+ ret = phydrv->resume(phydev);
+ if (ret < 0)
+ return ret;
+
+no_resume:
+ if (phydev->attached_dev)
+ phy_start_machine(phydev, NULL);
+
+ return 0;
+}
+
+static int mdio_bus_restore(struct device *dev)
+{
+ struct phy_device *phydev = to_phy_device(dev);
+ struct net_device *netdev = phydev->attached_dev;
+ int ret;
+
+ if (!netdev)
return 0;
- return phydrv->resume(phydev);
+
+ ret = phy_init_hw(phydev);
+ if (ret < 0)
+ return ret;
+
+ /* The PHY needs to renegotiate. */
+ phydev->link = 0;
+ phydev->state = PHY_UP;
+
+ phy_start_machine(phydev, NULL);
+
+ return 0;
}
+static struct dev_pm_ops mdio_bus_pm_ops = {
+ .suspend = mdio_bus_suspend,
+ .resume = mdio_bus_resume,
+ .freeze = mdio_bus_suspend,
+ .thaw = mdio_bus_resume,
+ .restore = mdio_bus_restore,
+};
+
+#define MDIO_BUS_PM_OPS (&mdio_bus_pm_ops)
+
+#else
+
+#define MDIO_BUS_PM_OPS NULL
+
+#endif /* CONFIG_PM */
+
struct bus_type mdio_bus_type = {
.name = "mdio_bus",
.match = mdio_bus_match,
- .suspend = mdio_bus_suspend,
- .resume = mdio_bus_resume,
+ .pm = MDIO_BUS_PM_OPS,
};
EXPORT_SYMBOL(mdio_bus_type);
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index b10fedd82143..8212b2b93422 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -378,6 +378,20 @@ void phy_disconnect(struct phy_device *phydev)
}
EXPORT_SYMBOL(phy_disconnect);
+int phy_init_hw(struct phy_device *phydev)
+{
+ int ret;
+
+ if (!phydev->drv || !phydev->drv->config_init)
+ return 0;
+
+ ret = phy_scan_fixups(phydev);
+ if (ret < 0)
+ return ret;
+
+ return phydev->drv->config_init(phydev);
+}
+
/**
* phy_attach_direct - attach a network device to a given PHY device pointer
* @dev: network device to attach
@@ -425,21 +439,7 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
/* Do initial configuration here, now that
* we have certain key parameters
* (dev_flags and interface) */
- if (phydev->drv->config_init) {
- int err;
-
- err = phy_scan_fixups(phydev);
-
- if (err < 0)
- return err;
-
- err = phydev->drv->config_init(phydev);
-
- if (err < 0)
- return err;
- }
-
- return 0;
+ return phy_init_hw(phydev);
}
EXPORT_SYMBOL(phy_attach_direct);