net: dsa: mv88e6xxx: Remove set but unused variable

We don't act on any errors reading registers while handling watchdog
interrupt. Since this is an interrupt handler, we cannot return such
errors. So just remove the variable.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/mv88e6xxx/global2.c b/drivers/net/dsa/mv88e6xxx/global2.c
index 8fd483020c5b91685731cbac02cfe3b4328ead42..75b227d0f73b436b6a6934b90e27c0f98f86779e 100644 (file)
--- a/drivers/net/dsa/mv88e6xxx/global2.c
+++ b/drivers/net/dsa/mv88e6xxx/global2.c
@@ -876,19 +876,18 @@ static int mv88e6390_watchdog_setup(struct mv88e6xxx_chip *chip)
 
 static int mv88e6390_watchdog_action(struct mv88e6xxx_chip *chip, int irq)
 {
-       int err;
        u16 reg;
 
        mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
                           MV88E6390_G2_WDOG_CTL_PTR_EVENT);
-       err = mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, &reg);
+       mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, &reg);
 
        dev_info(chip->dev, "Watchdog event: 0x%04x",
                 reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);
 
        mv88e6xxx_g2_write(chip, MV88E6390_G2_WDOG_CTL,
                           MV88E6390_G2_WDOG_CTL_PTR_HISTORY);
-       err = mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, &reg);
+       mv88e6xxx_g2_read(chip, MV88E6390_G2_WDOG_CTL, &reg);
 
        dev_info(chip->dev, "Watchdog history: 0x%04x",
                 reg & MV88E6390_G2_WDOG_CTL_DATA_MASK);