[PATCH 5.15 086/207] net: dsa: mv88e6xxx: Drop unnecessary check in mv88e6393x_serdes_erratum_4_6()

Greg Kroah-Hartman
2021-12-06T15:49:48Z

From: Marek Behún <kabel@kernel.org>

commit 8c3318b4874e2dee867f5ae8f6d38f78e044bf71 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/dsa/mv88e6xxx/serdes.c | 28 +++++++++++-----------------
1 file changed, 11 insertions(+), 17 deletions(-)

--- 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
* 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;
+ 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);
- }
-
- return 0;
+ return mv88e6390_serdes_power_sgmii(chip, lane, false);
}

int mv88e6393x_serdes_setup_errata(struct mv88e6xxx_chip *chip)