Merge git://git.denx.de/u-boot-tegra

[platform/kernel/u-boot.git] / net / eth_common.c

diff --git a/net/eth_common.c b/net/eth_common.c
index 2880901..58fa295 100644 (file)
--- a/net/eth_common.c
+++ b/net/eth_common.c
@@ -32,7 +32,10 @@ int eth_getenv_enetaddr(const char *name, uchar *enetaddr)
 
 int eth_setenv_enetaddr(const char *name, const uchar *enetaddr)
 {
-       char buf[20];
+       char buf[ARP_HLEN_ASCII + 1];
+
+       if (eth_getenv_enetaddr(name, (uchar *)buf))
+               return -EEXIST;
 
        sprintf(buf, "%pM", enetaddr);