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From b11218c750ab92cfab4408a0328f1b36ceec3f33 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Fri, 6 Jan 2012 12:24:18 +0100
Subject: [PATCH 19/63] NET: bcm63xx_enet: move phy_(dis)connect into probe/remove
Only connect/disconnect the phy during probe and remove, not during any
open/close. The phy seldom changes during the runtime, and disconnecting
the phy during close will prevent it from keeping any configuration over
a down/up cycle.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
drivers/net/ethernet/broadcom/bcm63xx_enet.c | 84 +++++++++++++-------------
1 files changed, 41 insertions(+), 43 deletions(-)
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -784,10 +784,8 @@ static int bcm_enet_open(struct net_devi
struct bcm_enet_priv *priv;
struct sockaddr addr;
struct device *kdev;
- struct phy_device *phydev;
int i, ret;
unsigned int size;
- char phy_id[MII_BUS_ID_SIZE + 3];
void *p;
u32 val;
@@ -795,40 +793,10 @@ static int bcm_enet_open(struct net_devi
kdev = &priv->pdev->dev;
if (priv->has_phy) {
- /* connect to PHY */
- snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
- priv->mii_bus->id, priv->phy_id);
-
- phydev = phy_connect(dev, phy_id, bcm_enet_adjust_phy_link, 0,
- PHY_INTERFACE_MODE_MII);
-
- if (IS_ERR(phydev)) {
- dev_err(kdev, "could not attach to PHY\n");
- return PTR_ERR(phydev);
- }
-
- /* mask with MAC supported features */
- phydev->supported &= (SUPPORTED_10baseT_Half |
- SUPPORTED_10baseT_Full |
- SUPPORTED_100baseT_Half |
- SUPPORTED_100baseT_Full |
- SUPPORTED_Autoneg |
- SUPPORTED_Pause |
- SUPPORTED_MII);
- phydev->advertising = phydev->supported;
-
- if (priv->pause_auto && priv->pause_rx && priv->pause_tx)
- phydev->advertising |= SUPPORTED_Pause;
- else
- phydev->advertising &= ~SUPPORTED_Pause;
-
- dev_info(kdev, "attached PHY at address %d [%s]\n",
- phydev->addr, phydev->drv->name);
-
+ /* Reset state */
priv->old_link = 0;
priv->old_duplex = -1;
priv->old_pause = -1;
- priv->phydev = phydev;
}
/* mask all interrupts and request them */
@@ -838,7 +806,7 @@ static int bcm_enet_open(struct net_devi
ret = request_irq(dev->irq, bcm_enet_isr_mac, 0, dev->name, dev);
if (ret)
- goto out_phy_disconnect;
+ return ret;
ret = request_irq(priv->irq_rx, bcm_enet_isr_dma, IRQF_DISABLED,
dev->name, dev);
@@ -1025,9 +993,6 @@ out_freeirq_rx:
out_freeirq:
free_irq(dev->irq, dev);
-out_phy_disconnect:
- phy_disconnect(priv->phydev);
-
return ret;
}
@@ -1132,12 +1097,6 @@ static int bcm_enet_stop(struct net_devi
free_irq(priv->irq_rx, dev);
free_irq(dev->irq, dev);
- /* release phy */
- if (priv->has_phy) {
- phy_disconnect(priv->phydev);
- priv->phydev = NULL;
- }
-
return 0;
}
@@ -1708,6 +1667,8 @@ static int bcm_enet_probe(struct platfor
/* MII bus registration */
if (priv->has_phy) {
+ struct phy_device *phydev;
+ char phy_id[MII_BUS_ID_SIZE + 3];
priv->mii_bus = mdiobus_alloc();
if (!priv->mii_bus) {
@@ -1745,6 +1706,38 @@ static int bcm_enet_probe(struct platfor
dev_err(&pdev->dev, "unable to register mdio bus\n");
goto out_free_mdio;
}
+
+ /* connect to PHY */
+ snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT,
+ priv->mii_bus->id, priv->phy_id);
+
+ phydev = phy_connect(dev, phy_id, bcm_enet_adjust_phy_link, 0,
+ PHY_INTERFACE_MODE_MII);
+
+ if (IS_ERR(phydev)) {
+ dev_err(&pdev->dev, "could not attach to PHY\n");
+ goto out_unregister_mdio;
+ }
+
+ /* mask with MAC supported features */
+ phydev->supported &= (SUPPORTED_10baseT_Half |
+ SUPPORTED_10baseT_Full |
+ SUPPORTED_100baseT_Half |
+ SUPPORTED_100baseT_Full |
+ SUPPORTED_Autoneg |
+ SUPPORTED_Pause |
+ SUPPORTED_MII);
+ phydev->advertising = phydev->supported;
+
+ if (priv->pause_auto && priv->pause_rx && priv->pause_tx)
+ phydev->advertising |= SUPPORTED_Pause;
+ else
+ phydev->advertising &= ~SUPPORTED_Pause;
+
+ dev_info(&pdev->dev, "attached PHY at address %d [%s]\n",
+ phydev->addr, phydev->drv->name);
+
+ priv->phydev = phydev;
} else {
/* run platform code to initialize PHY device */
@@ -1790,6 +1783,9 @@ static int bcm_enet_probe(struct platfor
return 0;
out_unregister_mdio:
+ if (priv->phydev)
+ phy_disconnect(priv->phydev);
+
if (priv->mii_bus)
mdiobus_unregister(priv->mii_bus);
@@ -1831,6 +1827,8 @@ static int bcm_enet_remove(struct platfo
enet_writel(priv, 0, ENET_MIISC_REG);
if (priv->has_phy) {
+ phy_disconnect(priv->phydev);
+ priv->phydev = NULL;
mdiobus_unregister(priv->mii_bus);
mdiobus_free(priv->mii_bus);
} else {
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