phy/micrel: move flag handling to function for common use

The flag MICREL_PHY_50MHZ_CLK is not of exclusive use of KSZ8051
model. At least KSZ8021 and KSZ8031 models also use it.
This patch moves the handling of this and future flags to a
separate function so that the different PHY models can call it on
their init function, if needed.
Signed-off-by: NHector Palacios <hector.palacios@digi.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/phy/micrel.c

@@ -53,6 +53,18 @@
 #define KS8737_CTRL_INT_ACTIVE_HIGH		(1 << 14)
 #define KSZ8051_RMII_50MHZ_CLK			(1 << 7)
 
+static int ksz_config_flags(struct phy_device *phydev)
+{
+	int regval;
+
+	if (phydev->dev_flags & MICREL_PHY_50MHZ_CLK) {
+		regval = phy_read(phydev, MII_KSZPHY_CTRL);
+		regval |= KSZ8051_RMII_50MHZ_CLK;
+		return phy_write(phydev, MII_KSZPHY_CTRL, regval);
+	}
+	return 0;
+}
+
 static int kszphy_ack_interrupt(struct phy_device *phydev)
 {
 	/* bit[7..0] int status, which is a read and clear register. */
@@ -114,22 +126,19 @@ static int kszphy_config_init(struct phy_device *phydev)
 
 static int ksz8021_config_init(struct phy_device *phydev)
 {
+	int rc;
 	const u16 val = KSZPHY_OMSO_B_CAST_OFF | KSZPHY_OMSO_RMII_OVERRIDE;
 	phy_write(phydev, MII_KSZPHY_OMSO, val);
-	return 0;
+	rc = ksz_config_flags(phydev);
+	return rc < 0 ? rc : 0;
 }
 
 static int ks8051_config_init(struct phy_device *phydev)
 {
-	int regval;
-
-	if (phydev->dev_flags & MICREL_PHY_50MHZ_CLK) {
-		regval = phy_read(phydev, MII_KSZPHY_CTRL);
-		regval |= KSZ8051_RMII_50MHZ_CLK;
-		phy_write(phydev, MII_KSZPHY_CTRL, regval);
-	}
+	int rc;
 
-	return 0;
+	rc = ksz_config_flags(phydev);
+	return rc < 0 ? rc : 0;
 }
 
 #define KSZ8873MLL_GLOBAL_CONTROL_4	0x06