net: dsa: mv88e6xxx: add default case to switch
authorGustavo A. R. Silva <garsilva@embeddedor.com>
Fri, 12 May 2017 03:11:29 +0000 (22:11 -0500)
committerDavid S. Miller <davem@davemloft.net>
Fri, 12 May 2017 16:14:40 +0000 (12:14 -0400)
Add default case to switch in order to avoid any chance of using an
uninitialized variable _low_, in case s->type does not match any of
the listed case values.

Addresses-Coverity-ID: 1398130
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/dsa/mv88e6xxx/chip.c

index 19581d783d8ec7dc9ed9e5fd5a2891e8f2d22135..d034d8cd7d22dcde187f0becb24afd45480271f3 100644 (file)
@@ -849,6 +849,9 @@ static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip,
                mv88e6xxx_g1_stats_read(chip, reg, &low);
                if (s->sizeof_stat == 8)
                        mv88e6xxx_g1_stats_read(chip, reg + 1, &high);
+               break;
+       default:
+               return UINT64_MAX;
        }
        value = (((u64)high) << 16) | low;
        return value;