diff --git a/drivers/net/at91_emac.c b/drivers/net/at91_emac.c
index 0912f52822cd21d311fb3a28c21a5688544cf9da..d82459b1ce9c5aef4ce1913d787a2fd72b69a9cf 100644
--- a/drivers/net/at91_emac.c
+++ b/drivers/net/at91_emac.c
@@ -162,7 +162,7 @@ int  at91emac_write(at91_emac_t *at91mac, unsigned char addr,
 
 #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
 
-at91_emac_t *get_emacbase_by_name(char *devname)
+at91_emac_t *get_emacbase_by_name(const char *devname)
 {
 	struct eth_device *netdev;
 
diff --git a/drivers/net/eepro100.c b/drivers/net/eepro100.c
index 5cb767a795fa0ac132ca8ea770d33a0205877309..22e14e3814deeadf854b0b09d4494d4038c5b360 100644
--- a/drivers/net/eepro100.c
+++ b/drivers/net/eepro100.c
@@ -321,7 +321,8 @@ static int set_phyreg (struct eth_device *dev, unsigned char addr,
 /* Check if given phyaddr is valid, i.e. there is a PHY connected.
  * Do this by checking model value field from ID2 register.
  */
-static struct eth_device* verify_phyaddr (char *devname, unsigned char addr)
+static struct eth_device* verify_phyaddr (const char *devname,
+						unsigned char addr)
 {
 	struct eth_device *dev;
 	unsigned short value;
diff --git a/drivers/net/phy/miiphybb.c b/drivers/net/phy/miiphybb.c
index 2768c7584e2fa10be57d867a3befed7cdc162c1d..1045cf1ba980ae91d56bf4ddb35728e089e44a28 100644
--- a/drivers/net/phy/miiphybb.c
+++ b/drivers/net/phy/miiphybb.c
@@ -143,7 +143,7 @@ void bb_miiphy_init(void)
 	}
 }
 
-static inline struct bb_miiphy_bus *bb_miiphy_getbus(char *devname)
+static inline struct bb_miiphy_bus *bb_miiphy_getbus(const char *devname)
 {
 #ifdef CONFIG_BITBANGMII_MULTI
 	int i;
@@ -246,7 +246,7 @@ static void miiphy_pre(struct bb_miiphy_bus *bus, char read,
  * Returns:
  *   0 on success
  */
-int bb_miiphy_read(char *devname, unsigned char addr,
+int bb_miiphy_read(const char *devname, unsigned char addr,
 		   unsigned char reg, unsigned short *value)
 {
 	short rdreg; /* register working value */
@@ -327,7 +327,7 @@ int bb_miiphy_read(char *devname, unsigned char addr,
  * Returns:
  *   0 on success
  */
-int bb_miiphy_write (char *devname, unsigned char addr,
+int bb_miiphy_write (const char *devname, unsigned char addr,
 		     unsigned char reg, unsigned short value)
 {
 	struct bb_miiphy_bus *bus;
diff --git a/include/net.h b/include/net.h
index a180881dc73d498a2fd283e460bd08c8480d245c..ab571eb3ee49d4a488a1ec5a69ac49bc61972964 100644
--- a/include/net.h
+++ b/include/net.h
@@ -117,7 +117,7 @@ extern void eth_try_another(int first_restart);	/* Change the device */
 extern void eth_set_current(void);		/* set nterface to ethcur var */
 #endif
 extern struct eth_device *eth_get_dev(void);	/* get the current device MAC */
-extern struct eth_device *eth_get_dev_by_name(char *devname); /* get device */
+extern struct eth_device *eth_get_dev_by_name(const char *devname);
 extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */
 extern int eth_get_dev_index (void);		/* get the device index */
 extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr);
diff --git a/net/eth.c b/net/eth.c
index de6d5c6040ddeb2fc126779fed944e54834e84c6..993306f0a47d8ed2a62a14d1006e52be41e2a191 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -102,7 +102,7 @@ struct eth_device *eth_get_dev(void)
 	return eth_current;
 }
 
-struct eth_device *eth_get_dev_by_name(char *devname)
+struct eth_device *eth_get_dev_by_name(const char *devname)
 {
 	struct eth_device *dev, *target_dev;