1 files changed, 13 insertions, 17 deletions

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 95f07fcd4f85..860dca41cf4b 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3161,10 +3161,17 @@ out_resources:
 	return err;
 }
 
+/* prod_id for switch families which do not have a PHY model number */
+static const u16 family_prod_id_table[] = {
+	[MV88E6XXX_FAMILY_6341] = MV88E6XXX_PORT_SWITCH_ID_PROD_6341,
+	[MV88E6XXX_FAMILY_6390] = MV88E6XXX_PORT_SWITCH_ID_PROD_6390,
+};
+
 static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg)
 {
 	struct mv88e6xxx_mdio_bus *mdio_bus = bus->priv;
 	struct mv88e6xxx_chip *chip = mdio_bus->chip;
+	u16 prod_id;
 	u16 val;
 	int err;
 
@@ -3175,23 +3182,12 @@ static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg)
 	err = chip->info->ops->phy_read(chip, bus, phy, reg, &val);
 	mv88e6xxx_reg_unlock(chip);
 
-	if (reg == MII_PHYSID2) {
-		/* Some internal PHYs don't have a model number. */
-		if (chip->info->family != MV88E6XXX_FAMILY_6165)
-			/* Then there is the 6165 family. It gets is
-			 * PHYs correct. But it can also have two
-			 * SERDES interfaces in the PHY address
-			 * space. And these don't have a model
-			 * number. But they are not PHYs, so we don't
-			 * want to give them something a PHY driver
-			 * will recognise.
-			 *
-			 * Use the mv88e6390 family model number
-			 * instead, for anything which really could be
-			 * a PHY,
-			 */
-			if (!(val & 0x3f0))
-				val |= MV88E6XXX_PORT_SWITCH_ID_PROD_6390 >> 4;
+	/* Some internal PHYs don't have a model number. */
+	if (reg == MII_PHYSID2 && !(val & 0x3f0) &&
+	    chip->info->family < ARRAY_SIZE(family_prod_id_table)) {
+		prod_id = family_prod_id_table[chip->info->family];
+		if (prod_id)
+			val |= prod_id >> 4;
 	}
 
 	return err ? err : val;