net: phy: broadcom: Remove conflicting ECR global interrupt mask in config_init

The driver previously set the global interrupt mask in the ECR register
in bcm54xx_config_init(), disabling all interrupts. This conflicts with
the configuration in bcm_phy_config_intr(), which enables or disables the
global interrupt mask as needed and is called earlier. As a result,
interrupts may remain globally disabled even when the IMR is configured
to unmask specific events.

Remove the ECR handling from bcm54xx_config_init() so that interrupt
enable/disable is managed exclusively by bcm_phy_config_intr().

Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de>

Author: nbuchwitz

drivers/net/phy/broadcom.c

@@ -456,13 +456,9 @@ static int bcm54xx_config_init(struct phy_device *phydev)
 	if (reg < 0)
 		return reg;
 
-	/* Mask interrupts globally.  */
-	reg |= MII_BCM54XX_ECR_IM;
-	err = phy_write(phydev, MII_BCM54XX_ECR, reg);
-	if (err < 0)
-		return err;
-
-	/* Unmask events we are interested in.  */
+	/* Initially all interrupts are masked in IMR, so unmask events
+	 * we are interested in.
+	 */
 	reg = ~(MII_BCM54XX_INT_DUPLEX |
 		MII_BCM54XX_INT_SPEED |
 		MII_BCM54XX_INT_LINK);