phy: Revert toggling reset changes.

This reverts:

ef1b5bf ("net: phy: Fix not to call phy_resume() if PHY is not attached")
8c85f4b ("net: phy: micrel: add toggling phy reset if PHY is not  attached")

Andrew Lunn informs me that there are alternative efforts
underway to fix this more properly.

Signed-off-by: David S. Miller <[email protected]>

Author: davem330

drivers/net/phy/micrel.c

@@ -23,7 +23,6 @@
  *			 ksz9477
  */
 
-#include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/phy.h>
@@ -836,13 +835,6 @@ static int kszphy_resume(struct phy_device *phydev)
 {
 	int ret;
 
-	if (!phydev->attached_dev) {
-		/* If the PHY is not attached, toggle the reset */
-		phy_device_reset(phydev, 1);
-		udelay(1);
-		phy_device_reset(phydev, 0);
-	}
-
 	genphy_resume(phydev);
 
 	ret = kszphy_config_reset(phydev);

drivers/net/phy/phy_device.c

@@ -220,7 +220,7 @@ static LIST_HEAD(phy_fixup_list);
 static DEFINE_MUTEX(phy_fixup_lock);
 
 #ifdef CONFIG_PM
-static bool mdio_bus_phy_may_suspend(struct phy_device *phydev, bool suspend)
+static bool mdio_bus_phy_may_suspend(struct phy_device *phydev)
 {
 	struct device_driver *drv = phydev->mdio.dev.driver;
 	struct phy_driver *phydrv = to_phy_driver(drv);
@@ -232,11 +232,10 @@ static bool mdio_bus_phy_may_suspend(struct phy_device *phydev, bool suspend)
 	/* PHY not attached? May suspend if the PHY has not already been
 	 * suspended as part of a prior call to phy_disconnect() ->
 	 * phy_detach() -> phy_suspend() because the parent netdev might be the
-	 * MDIO bus driver and clock gated at this point. Also may resume if
-	 * PHY is not attached.
+	 * MDIO bus driver and clock gated at this point.
 	 */
 	if (!netdev)
-		return suspend ? !phydev->suspended : phydev->suspended;
+		return !phydev->suspended;
 
 	if (netdev->wol_enabled)
 		return false;
@@ -271,7 +270,7 @@ static int mdio_bus_phy_suspend(struct device *dev)
 	if (phydev->attached_dev && phydev->adjust_link)
 		phy_stop_machine(phydev);
 
-	if (!mdio_bus_phy_may_suspend(phydev, true))
+	if (!mdio_bus_phy_may_suspend(phydev))
 		return 0;
 
 	return phy_suspend(phydev);
@@ -282,7 +281,7 @@ static int mdio_bus_phy_resume(struct device *dev)
 	struct phy_device *phydev = to_phy_device(dev);
 	int ret;
 
-	if (!mdio_bus_phy_may_suspend(phydev, false))
+	if (!mdio_bus_phy_may_suspend(phydev))
 		goto no_resume;
 
 	ret = phy_resume(phydev);