netdev - [PATCH net-next v2 3/4] net: phy: start interrupts in phy

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Date:   Sun, 20 Jan 2019 10:03:24 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next v2 3/4] net: phy: start interrupts in phy_start

Interrupts don't have to be enabled before calling phy_start().
Therefore let's enable them in phy_start(). In a subsequent step
we'll remove enabling interrupts from phy_connect_direct().

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/phy/phy.c | 34 ++++++++++++++--------------------
 1 file changed, 14 insertions(+), 20 deletions(-)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index fd928979b..30ba650bb 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -857,7 +857,7 @@ EXPORT_SYMBOL(phy_stop);
  */
 void phy_start(struct phy_device *phydev)
 {
-	int err = 0;
+	int err;
 
 	mutex_lock(&phydev->lock);
 
@@ -867,28 +867,22 @@ void phy_start(struct phy_device *phydev)
 		goto out;
 	}
 
-	switch (phydev->state) {
-	case PHY_READY:
-		phydev->state = PHY_UP;
-		phy_start_machine(phydev);
-		break;
-	case PHY_HALTED:
-		/* if phy was suspended, bring the physical link up again */
-		__phy_resume(phydev);
+	/* if phy was suspended, bring the physical link up again */
+	__phy_resume(phydev);
 
-		/* make sure interrupts are re-enabled for the PHY */
-		if (phy_interrupt_is_valid(phydev)) {
-			err = phy_enable_interrupts(phydev);
-			if (err < 0)
-				break;
-		}
+	/* make sure interrupts are enabled for the PHY */
+	if (phy_interrupt_is_valid(phydev)) {
+		err = phy_enable_interrupts(phydev);
+		if (err < 0)
+			goto out;
+	}
 
+	if (phydev->state == PHY_READY)
+		phydev->state = PHY_UP;
+	else
 		phydev->state = PHY_RESUMING;
-		phy_start_machine(phydev);
-		break;
-	default:
-		break;
-	}
+
+	phy_start_machine(phydev);
 out:
 	mutex_unlock(&phydev->lock);
 }
-- 
2.20.1