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-rw-r--r--drivers/net/phy/mdio-gpio.c13
-rw-r--r--drivers/net/phy/mdio_bus.c56
-rw-r--r--drivers/net/phy/phy.c41
3 files changed, 61 insertions, 49 deletions
diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index af28ff7ae176..33984b737233 100644
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -202,16 +202,21 @@ static int __devinit mdio_ofgpio_probe(struct of_device *ofdev,
 {
 	struct device_node *np = NULL;
 	struct mdio_gpio_platform_data *pdata;
+	int ret;
 
 	pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return -ENOMEM;
 
-	pdata->mdc = of_get_gpio(ofdev->node, 0);
-	pdata->mdio = of_get_gpio(ofdev->node, 1);
-
-	if (pdata->mdc < 0 || pdata->mdio < 0)
+	ret = of_get_gpio(ofdev->node, 0);
+	if (ret < 0)
 		goto out_free;
+	pdata->mdc = ret;
+
+	ret = of_get_gpio(ofdev->node, 1);
+	if (ret < 0)
+                goto out_free;
+	pdata->mdio = ret;
 
 	while ((np = of_get_next_child(ofdev->node, np)))
 		if (!strcmp(np->type, "ethernet-phy"))
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 811a637695ca..b754020cbe75 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -21,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/delay.h>
+#include <linux/device.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/skbuff.h>
@@ -98,7 +99,7 @@ int mdiobus_register(struct mii_bus *bus)
 	bus->dev.parent = bus->parent;
 	bus->dev.class = &mdio_bus_class;
 	bus->dev.groups = NULL;
-	dev_set_name(&bus->dev, bus->id);
+	dev_set_name(&bus->dev, "%s", bus->id);
 
 	err = device_register(&bus->dev);
 	if (err) {
@@ -286,33 +287,58 @@ static int mdio_bus_match(struct device *dev, struct device_driver *drv)
 		(phydev->phy_id & phydrv->phy_id_mask));
 }
 
+static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
+{
+	struct device_driver *drv = phydev->dev.driver;
+	struct phy_driver *phydrv = to_phy_driver(drv);
+	struct net_device *netdev = phydev->attached_dev;
+
+	if (!drv || !phydrv->suspend)
+		return false;
+
+	/* PHY not attached? May suspend. */
+	if (!netdev)
+		return true;
+
+	/*
+	 * Don't suspend PHY if the attched netdev parent may wakeup.
+	 * The parent may point to a PCI device, as in tg3 driver.
+	 */
+	if (netdev->dev.parent && device_may_wakeup(netdev->dev.parent))
+		return false;
+
+	/*
+	 * Also don't suspend PHY if the netdev itself may wakeup. This
+	 * is the case for devices w/o underlaying pwr. mgmt. aware bus,
+	 * e.g. SoC devices.
+	 */
+	if (device_may_wakeup(&netdev->dev))
+		return false;
+
+	return true;
+}
+
 /* Suspend and resume.  Copied from platform_suspend and
  * platform_resume
  */
 static int mdio_bus_suspend(struct device * dev, pm_message_t state)
 {
-	int ret = 0;
-	struct device_driver *drv = dev->driver;
-	struct phy_driver *phydrv = to_phy_driver(drv);
+	struct phy_driver *phydrv = to_phy_driver(dev->driver);
 	struct phy_device *phydev = to_phy_device(dev);
 
-	if (drv && phydrv->suspend && !device_may_wakeup(phydev->dev.parent))
-		ret = phydrv->suspend(phydev);
-
-	return ret;
+	if (!mdio_bus_phy_may_suspend(phydev))
+		return 0;
+	return phydrv->suspend(phydev);
 }
 
 static int mdio_bus_resume(struct device * dev)
 {
-	int ret = 0;
-	struct device_driver *drv = dev->driver;
-	struct phy_driver *phydrv = to_phy_driver(drv);
+	struct phy_driver *phydrv = to_phy_driver(dev->driver);
 	struct phy_device *phydev = to_phy_device(dev);
 
-	if (drv && phydrv->resume && !device_may_wakeup(phydev->dev.parent))
-		ret = phydrv->resume(phydev);
-
-	return ret;
+	if (!mdio_bus_phy_may_suspend(phydev))
+		return 0;
+	return phydrv->resume(phydev);
 }
 
 struct bus_type mdio_bus_type = {
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index e4ede6080c9d..58b73b08dde0 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -414,7 +414,6 @@ EXPORT_SYMBOL(phy_start_aneg);
 
 static void phy_change(struct work_struct *work);
 static void phy_state_machine(struct work_struct *work);
-static void phy_timer(unsigned long data);
 
 /**
  * phy_start_machine - start PHY state machine tracking
@@ -434,11 +433,8 @@ void phy_start_machine(struct phy_device *phydev,
 {
 	phydev->adjust_state = handler;
 
-	INIT_WORK(&phydev->state_queue, phy_state_machine);
-	init_timer(&phydev->phy_timer);
-	phydev->phy_timer.function = &phy_timer;
-	phydev->phy_timer.data = (unsigned long) phydev;
-	mod_timer(&phydev->phy_timer, jiffies + HZ);
+	INIT_DELAYED_WORK(&phydev->state_queue, phy_state_machine);
+	schedule_delayed_work(&phydev->state_queue, jiffies + HZ);
 }
 
 /**
@@ -451,8 +447,7 @@ void phy_start_machine(struct phy_device *phydev,
  */
 void phy_stop_machine(struct phy_device *phydev)
 {
-	del_timer_sync(&phydev->phy_timer);
-	cancel_work_sync(&phydev->state_queue);
+	cancel_delayed_work_sync(&phydev->state_queue);
 
 	mutex_lock(&phydev->lock);
 	if (phydev->state > PHY_UP)
@@ -680,11 +675,9 @@ static void phy_change(struct work_struct *work)
 	if (err)
 		goto irq_enable_err;
 
-	/* Stop timer and run the state queue now.  The work function for
-	 * state_queue will start the timer up again.
-	 */
-	del_timer(&phydev->phy_timer);
-	schedule_work(&phydev->state_queue);
+	/* reschedule state queue work to run as soon as possible */
+	cancel_delayed_work_sync(&phydev->state_queue);
+	schedule_delayed_work(&phydev->state_queue, 0);
 
 	return;
 
@@ -761,14 +754,13 @@ EXPORT_SYMBOL(phy_start);
 /**
  * phy_state_machine - Handle the state machine
  * @work: work_struct that describes the work to be done
- *
- * Description: Scheduled by the state_queue workqueue each time
- *   phy_timer is triggered.
  */
 static void phy_state_machine(struct work_struct *work)
 {
+	struct delayed_work *dwork =
+			container_of(work, struct delayed_work, work);
 	struct phy_device *phydev =
-			container_of(work, struct phy_device, state_queue);
+			container_of(dwork, struct phy_device, state_queue);
 	int needs_aneg = 0;
 	int err = 0;
 
@@ -946,17 +938,6 @@ static void phy_state_machine(struct work_struct *work)
 	if (err < 0)
 		phy_error(phydev);
 
-	mod_timer(&phydev->phy_timer, jiffies + PHY_STATE_TIME * HZ);
-}
-
-/* PHY timer which schedules the state machine work */
-static void phy_timer(unsigned long data)
-{
-	struct phy_device *phydev = (struct phy_device *)data;
-
-	/*
-	 * PHY I/O operations can potentially sleep so we ensure that
-	 * it's done from a process context
-	 */
-	schedule_work(&phydev->state_queue);
+	schedule_delayed_work(&phydev->state_queue,
+				jiffies + PHY_STATE_TIME * HZ);
 }
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-09-25 00:27:43 +0000