net: dsa: mv88e6xxx: Drop unnecessary check in mv88e6393x_serdes_erratum_4_6()

The check for lane is unnecessary, since the function is called only
with allowed lane argument.

Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index 0658ee3..3a62445 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -1284,26 +1284,20 @@ static int mv88e6393x_serdes_erratum_4_6(struct mv88e6xxx_chip *chip, int lane)
         * It seems that after this workaround the SERDES is automatically
         * powered up (the bit is cleared), so power it down.
         */
-       if (lane == MV88E6393X_PORT0_LANE || lane == MV88E6393X_PORT9_LANE ||
-           lane == MV88E6393X_PORT10_LANE) {
-               err = mv88e6390_serdes_read(chip, lane,
-                                           MDIO_MMD_PHYXS,
-                                           MV88E6393X_SERDES_POC, &reg);
-               if (err)
-                       return err;
+       err = mv88e6390_serdes_read(chip, lane, MDIO_MMD_PHYXS,
+                                   MV88E6393X_SERDES_POC, &reg);
+       if (err)
+               return err;
 
-               reg &= ~MV88E6393X_SERDES_POC_PDOWN;
-               reg |= MV88E6393X_SERDES_POC_RESET;
+       reg &= ~MV88E6393X_SERDES_POC_PDOWN;
+       reg |= MV88E6393X_SERDES_POC_RESET;
 
-               err = mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
-                                            MV88E6393X_SERDES_POC, reg);
-               if (err)
-                       return err;
-
-               return mv88e6390_serdes_power_sgmii(chip, lane, false);
-       }
+       err = mv88e6390_serdes_write(chip, lane, MDIO_MMD_PHYXS,
+                                    MV88E6393X_SERDES_POC, reg);
+       if (err)
+               return err;
 
-       return 0;
+       return mv88e6390_serdes_power_sgmii(chip, lane, false);
 }
 
 int mv88e6393x_serdes_setup_errata(struct mv88e6xxx_chip *chip)