[U-Boot] [PATCH] eth_write_hwaddr: Return error for invalid MACs

[Benoît Thébaudeau]

If dev->enetaddr was supposed to be set with dev->write_hwaddr() but the MAC
address was not valid, return an error.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau at advansee.com>
Cc: Joe Hershberger <joe.hershberger at gmail.com>
---
 {u-boot-4d3c95f.orig => u-boot-4d3c95f}/net/eth.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git u-boot-4d3c95f.orig/net/eth.c u-boot-4d3c95f/net/eth.c
index 1a11ce1..174361f 100644
--- u-boot-4d3c95f.orig/net/eth.c
+++ u-boot-4d3c95f/net/eth.c
@@ -222,9 +222,12 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
 	}
 
 	if (dev->write_hwaddr &&
-			!eth_mac_skip(eth_number) &&
-			is_valid_ether_addr(dev->enetaddr))
+			!eth_mac_skip(eth_number)) {
+		if (!is_valid_ether_addr(dev->enetaddr))
+			return -1;
+
 		ret = dev->write_hwaddr(dev);
+	}
 
 	return ret;
 }