net: dsa: mv88e6171: Add defines for switch product IDs

Make the code more readable by using defines for the switch IDs.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/mv88e6171.c b/drivers/net/dsa/mv88e6171.c
index 6ce6a3ea1b8dafa6bca572bed8fc6ca57f679bdd..54ebfed1b938849b197ca4a67c2e80ded63efc0e 100644 (file)
--- a/drivers/net/dsa/mv88e6171.c
+++ b/drivers/net/dsa/mv88e6171.c
@@ -17,6 +17,10 @@
 #include <net/dsa.h>
 #include "mv88e6xxx.h"
 
+/* Switch product IDs */
+#define ID_6171        0x1710
+#define ID_6172        0x1720
+
 static char *mv88e6171_probe(struct device *host_dev, int sw_addr)
 {
        struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
@@ -27,9 +31,9 @@ static char *mv88e6171_probe(struct device *host_dev, int sw_addr)
 
        ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), 0x03);
        if (ret >= 0) {
-               if ((ret & 0xfff0) == 0x1710)
+               if ((ret & 0xfff0) == ID_6171)
                        return "Marvell 88E6171";
-               if ((ret & 0xfff0) == 0x1720)
+               if ((ret & 0xfff0) == ID_6172)
                        return "Marvell 88E6172";
        }