3 files changed, 6 insertions, 4 deletions

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index b2b9109b6712..b0c577256487 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -560,8 +560,8 @@ static int bond_update_speed_duplex(struct slave *slave)
         u32 slave_speed;
         int res;
 
-        slave->speed = -1;
-        slave->duplex = -1;
+        slave->speed = SPEED_UNKNOWN;
+        slave->duplex = DUPLEX_UNKNOWN;
 
         res = __ethtool_get_settings(slave_dev, &ecmd);
         if (res < 0)
diff --git a/drivers/net/bonding/bond_procfs.c b/drivers/net/bonding/bond_procfs.c
index d2ff52e63cbb..17206da2fab7 100644
--- a/drivers/net/bonding/bond_procfs.c
+++ b/drivers/net/bonding/bond_procfs.c
@@ -157,12 +157,12 @@ static void bond_info_show_slave(struct seq_file *seq,
         seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
         seq_printf(seq, "MII Status: %s\n",
                    (slave->link == BOND_LINK_UP) ?  "up" : "down");
-        if (slave->speed == -1)
+        if (slave->speed == SPEED_UNKNOWN)
                 seq_printf(seq, "Speed: %s\n", "Unknown");
         else
                 seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
 
-        if (slave->duplex == -1)
+        if (slave->duplex == DUPLEX_UNKNOWN)
                 seq_printf(seq, "Duplex: %s\n", "Unknown");
         else
                 seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 45f00b61c096..de33de1e2052 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -1097,10 +1097,12 @@ struct ethtool_ops {
 #define SPEED_1000              1000
 #define SPEED_2500              2500
 #define SPEED_10000             10000
+#define SPEED_UNKNOWN           -1
 
 /* Duplex, half or full. */
 #define DUPLEX_HALF             0x00
 #define DUPLEX_FULL             0x01
+#define DUPLEX_UNKNOWN          0xff
 
 /* Which connector port. */
 #define PORT_TP                 0x00