net sysfs: Print link speed as signed integer

Otherwise 4294967295 (MBit/s) (-1) will be printed when there is no link.
Documentation/ABI/testing/sysfs-class-net does not state if this shall be
signed or unsigned.
Also remove the now unused variable fmt_udec.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 805a95a..830f8a7 100644 (file)
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -31,7 +31,6 @@
 static const char fmt_hex[] = "%#x\n";
 static const char fmt_long_hex[] = "%#lx\n";
 static const char fmt_dec[] = "%d\n";
-static const char fmt_udec[] = "%u\n";
 static const char fmt_ulong[] = "%lu\n";
 static const char fmt_u64[] = "%llu\n";
 
@@ -202,7 +201,7 @@ static ssize_t speed_show(struct device *dev,
        if (netif_running(netdev)) {
                struct ethtool_cmd cmd;
                if (!__ethtool_get_settings(netdev, &cmd))
-                       ret = sprintf(buf, fmt_udec, ethtool_cmd_speed(&cmd));
+                       ret = sprintf(buf, fmt_dec, ethtool_cmd_speed(&cmd));
        }
        rtnl_unlock();
        return ret;