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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>
This commit is contained in:
Andrew Lunn 2015-03-26 18:36:41 -07:00 committed by David S. Miller
parent a8f064c602
commit 464caa2f5b
1 changed files with 6 additions and 2 deletions
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8
drivers/net/dsa/mv88e6171.c
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@ -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";
}