Merge branch 'bcmgenet-phydev-revert'

Philippe Reynes says:

====================
net: bcmgenet: only use new api ethtool_{get|set}_link_ksettings

Some times ago, a serie of patches were committed :
- commit 62469c76007e ("net: ethernet: bcmgenet: use phydev from struct net_device")
- commit 6b352ebccbcf ("net: ethernet: broadcom: bcmgenet: use new api ethtool_{get|set}_link_ksettings")
The first patch add a regression on this driver, so it should be reverted.
As the second patch depend on the former, it should be reverted too.

The first patch is buggy because there is a "trick" in this driver.
The structure phydev is kept in the private data when the interface
go down, and used when the interface go up to enable the phy before
the function phy_connect is called.

I don't have this hardware, neither the datasheet. So I won't
update the driver to avoid this trick.

But the real goal of the first serie was to move to the new api
ethtool_{get|set}_link_ksettings. So I provide a new version of
the patch without the "cleaning" of driver to use the phydev
store in the net_device structure.

Changelog:
v3:
- use priv instead of dev (so all the code use the same phydev)
v2:
- use Florian Fainelli patches for the revert instead of Jaedon Shin
- simply use net: bcmgenet: for the prefix of the patch
====================

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 39 insertions, 31 deletions

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 7f478499b649..4464bc5db934 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -453,25 +453,29 @@ static inline void bcmgenet_rdma_ring_writel(struct bcmgenet_priv *priv,
 static int bcmgenet_get_link_ksettings(struct net_device *dev,
 				       struct ethtool_link_ksettings *cmd)
 {
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
 	if (!netif_running(dev))
 		return -EINVAL;
 
-	if (!dev->phydev)
+	if (!priv->phydev)
 		return -ENODEV;
 
-	return phy_ethtool_ksettings_get(dev->phydev, cmd);
+	return phy_ethtool_ksettings_get(priv->phydev, cmd);
 }
 
 static int bcmgenet_set_link_ksettings(struct net_device *dev,
 				       const struct ethtool_link_ksettings *cmd)
 {
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
 	if (!netif_running(dev))
 		return -EINVAL;
 
-	if (!dev->phydev)
+	if (!priv->phydev)
 		return -ENODEV;
 
-	return phy_ethtool_ksettings_set(dev->phydev, cmd);
+	return phy_ethtool_ksettings_set(priv->phydev, cmd);
 }
 
 static int bcmgenet_set_rx_csum(struct net_device *dev,
@@ -937,7 +941,7 @@ static int bcmgenet_get_eee(struct net_device *dev, struct ethtool_eee *e)
 	e->eee_active = p->eee_active;
 	e->tx_lpi_timer = bcmgenet_umac_readl(priv, UMAC_EEE_LPI_TIMER);
 
-	return phy_ethtool_get_eee(dev->phydev, e);
+	return phy_ethtool_get_eee(priv->phydev, e);
 }
 
 static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e)
@@ -954,7 +958,7 @@ static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e)
 	if (!p->eee_enabled) {
 		bcmgenet_eee_enable_set(dev, false);
 	} else {
-		ret = phy_init_eee(dev->phydev, 0);
+		ret = phy_init_eee(priv->phydev, 0);
 		if (ret) {
 			netif_err(priv, hw, dev, "EEE initialization failed\n");
 			return ret;
@@ -964,12 +968,14 @@ static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e)
 		bcmgenet_eee_enable_set(dev, true);
 	}
 
-	return phy_ethtool_set_eee(dev->phydev, e);
+	return phy_ethtool_set_eee(priv->phydev, e);
 }
 
 static int bcmgenet_nway_reset(struct net_device *dev)
 {
-	return genphy_restart_aneg(dev->phydev);
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	return genphy_restart_aneg(priv->phydev);
 }
 
 /* standard ethtool support functions. */
@@ -996,13 +1002,12 @@ static const struct ethtool_ops bcmgenet_ethtool_ops = {
 static int bcmgenet_power_down(struct bcmgenet_priv *priv,
 				enum bcmgenet_power_mode mode)
 {
-	struct net_device *ndev = priv->dev;
 	int ret = 0;
 	u32 reg;
 
 	switch (mode) {
 	case GENET_POWER_CABLE_SENSE:
-		phy_detach(ndev->phydev);
+		phy_detach(priv->phydev);
 		break;
 
 	case GENET_POWER_WOL_MAGIC:
@@ -1063,6 +1068,7 @@ static void bcmgenet_power_up(struct bcmgenet_priv *priv,
 /* ioctl handle special commands that are not present in ethtool. */
 static int bcmgenet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 {
+	struct bcmgenet_priv *priv = netdev_priv(dev);
 	int val = 0;
 
 	if (!netif_running(dev))
@@ -1072,10 +1078,10 @@ static int bcmgenet_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	case SIOCGMIIPHY:
 	case SIOCGMIIREG:
 	case SIOCSMIIREG:
-		if (!dev->phydev)
+		if (!priv->phydev)
 			val = -ENODEV;
 		else
-			val = phy_mii_ioctl(dev->phydev, rq, cmd);
+			val = phy_mii_ioctl(priv->phydev, rq, cmd);
 		break;
 
 	default:
@@ -2458,7 +2464,6 @@ static void bcmgenet_irq_task(struct work_struct *work)
 {
 	struct bcmgenet_priv *priv = container_of(
 			work, struct bcmgenet_priv, bcmgenet_irq_work);
-	struct net_device *ndev = priv->dev;
 
 	netif_dbg(priv, intr, priv->dev, "%s\n", __func__);
 
@@ -2471,7 +2476,7 @@ static void bcmgenet_irq_task(struct work_struct *work)
 
 	/* Link UP/DOWN event */
 	if (priv->irq0_stat & UMAC_IRQ_LINK_EVENT) {
-		phy_mac_interrupt(ndev->phydev,
+		phy_mac_interrupt(priv->phydev,
 				  !!(priv->irq0_stat & UMAC_IRQ_LINK_UP));
 		priv->irq0_stat &= ~UMAC_IRQ_LINK_EVENT;
 	}
@@ -2711,7 +2716,7 @@ static void bcmgenet_netif_start(struct net_device *dev)
 	/* Monitor link interrupts now */
 	bcmgenet_link_intr_enable(priv);
 
-	phy_start(dev->phydev);
+	phy_start(priv->phydev);
 }
 
 static int bcmgenet_open(struct net_device *dev)
@@ -2810,7 +2815,7 @@ static void bcmgenet_netif_stop(struct net_device *dev)
 	struct bcmgenet_priv *priv = netdev_priv(dev);
 
 	netif_tx_stop_all_queues(dev);
-	phy_stop(dev->phydev);
+	phy_stop(priv->phydev);
 	bcmgenet_intr_disable(priv);
 	bcmgenet_disable_rx_napi(priv);
 	bcmgenet_disable_tx_napi(priv);
@@ -2836,7 +2841,7 @@ static int bcmgenet_close(struct net_device *dev)
 	bcmgenet_netif_stop(dev);
 
 	/* Really kill the PHY state machine and disconnect from it */
-	phy_disconnect(dev->phydev);
+	phy_disconnect(priv->phydev);
 
 	/* Disable MAC receive */
 	umac_enable_set(priv, CMD_RX_EN, false);
@@ -3395,7 +3400,7 @@ static int bcmgenet_suspend(struct device *d)
 
 	bcmgenet_netif_stop(dev);
 
-	phy_suspend(dev->phydev);
+	phy_suspend(priv->phydev);
 
 	netif_device_detach(dev);
 
@@ -3459,7 +3464,7 @@ static int bcmgenet_resume(struct device *d)
 	if (priv->wolopts)
 		clk_disable_unprepare(priv->clk_wol);
 
-	phy_init_hw(dev->phydev);
+	phy_init_hw(priv->phydev);
 	/* Speed settings must be restored */
 	bcmgenet_mii_config(priv->dev);
 
@@ -3492,7 +3497,7 @@ static int bcmgenet_resume(struct device *d)
 
 	netif_device_attach(dev);
 
-	phy_resume(dev->phydev);
+	phy_resume(priv->phydev);
 
 	if (priv->eee.eee_enabled)
 		bcmgenet_eee_enable_set(dev, true);
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
index 0f0868c56f05..1e2dc34d331a 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
@@ -597,6 +597,7 @@ struct bcmgenet_priv {
 
 	/* MDIO bus variables */
 	wait_queue_head_t wq;
+	struct phy_device *phydev;
 	bool internal_phy;
 	struct device_node *phy_dn;
 	struct device_node *mdio_dn;
diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index e907acd81da9..457c3bc8cfff 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -86,7 +86,7 @@ static int bcmgenet_mii_write(struct mii_bus *bus, int phy_id,
 void bcmgenet_mii_setup(struct net_device *dev)
 {
 	struct bcmgenet_priv *priv = netdev_priv(dev);
-	struct phy_device *phydev = dev->phydev;
+	struct phy_device *phydev = priv->phydev;
 	u32 reg, cmd_bits = 0;
 	bool status_changed = false;
 
@@ -183,9 +183,9 @@ void bcmgenet_mii_reset(struct net_device *dev)
 	if (GENET_IS_V4(priv))
 		return;
 
-	if (dev->phydev) {
-		phy_init_hw(dev->phydev);
-		phy_start_aneg(dev->phydev);
+	if (priv->phydev) {
+		phy_init_hw(priv->phydev);
+		phy_start_aneg(priv->phydev);
 	}
 }
 
@@ -236,7 +236,6 @@ static void bcmgenet_internal_phy_setup(struct net_device *dev)
 
 static void bcmgenet_moca_phy_setup(struct bcmgenet_priv *priv)
 {
-	struct net_device *ndev = priv->dev;
 	u32 reg;
 
 	/* Speed settings are set in bcmgenet_mii_setup() */
@@ -245,14 +244,14 @@ static void bcmgenet_moca_phy_setup(struct bcmgenet_priv *priv)
 	bcmgenet_sys_writel(priv, reg, SYS_PORT_CTRL);
 
 	if (priv->hw_params->flags & GENET_HAS_MOCA_LINK_DET)
-		fixed_phy_set_link_update(ndev->phydev,
+		fixed_phy_set_link_update(priv->phydev,
 					  bcmgenet_fixed_phy_link_update);
 }
 
 int bcmgenet_mii_config(struct net_device *dev)
 {
 	struct bcmgenet_priv *priv = netdev_priv(dev);
-	struct phy_device *phydev = dev->phydev;
+	struct phy_device *phydev = priv->phydev;
 	struct device *kdev = &priv->pdev->dev;
 	const char *phy_name = NULL;
 	u32 id_mode_dis = 0;
@@ -303,7 +302,7 @@ int bcmgenet_mii_config(struct net_device *dev)
 		 * capabilities, use that knowledge to also configure the
 		 * Reverse MII interface correctly.
 		 */
-		if ((phydev->supported & PHY_BASIC_FEATURES) ==
+		if ((priv->phydev->supported & PHY_BASIC_FEATURES) ==
 				PHY_BASIC_FEATURES)
 			port_ctrl = PORT_MODE_EXT_RVMII_25;
 		else
@@ -372,7 +371,7 @@ int bcmgenet_mii_probe(struct net_device *dev)
 			return -ENODEV;
 		}
 	} else {
-		phydev = dev->phydev;
+		phydev = priv->phydev;
 		phydev->dev_flags = phy_flags;
 
 		ret = phy_connect_direct(dev, phydev, bcmgenet_mii_setup,
@@ -383,6 +382,8 @@ int bcmgenet_mii_probe(struct net_device *dev)
 		}
 	}
 
+	priv->phydev = phydev;
+
 	/* Configure port multiplexer based on what the probed PHY device since
 	 * reading the 'max-speed' property determines the maximum supported
 	 * PHY speed which is needed for bcmgenet_mii_config() to configure
@@ -390,7 +391,7 @@ int bcmgenet_mii_probe(struct net_device *dev)
 	 */
 	ret = bcmgenet_mii_config(dev);
 	if (ret) {
-		phy_disconnect(phydev);
+		phy_disconnect(priv->phydev);
 		return ret;
 	}
 
@@ -400,7 +401,7 @@ int bcmgenet_mii_probe(struct net_device *dev)
 	 * Ethernet MAC ISRs
 	 */
 	if (priv->internal_phy)
-		phydev->irq = PHY_IGNORE_INTERRUPT;
+		priv->phydev->irq = PHY_IGNORE_INTERRUPT;
 
 	return 0;
 }
@@ -605,6 +606,7 @@ static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv)
 
 	}
 
+	priv->phydev = phydev;
 	priv->phy_interface = pd->phy_interface;
 
 	return 0;