From: Rafał Miłecki <zajec5@gmail.com>
Date: Thu, 7 Feb 2013 00:27:17 +0000 (+0000)
Subject: bgmac: validate (and random if needed) MAC addr
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d166f218ff2bae0f6adae9ce5444a889a1d749e2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

bgmac: validate (and random if needed) MAC addr

This adds check for a valid Ethernet MAC address and in case it is not,
it will generate a valid random one, such that the adapter is still
usable.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c
index 23c8d4a21ccf..380084bad129 100644
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -1318,6 +1318,12 @@ static int bgmac_probe(struct bcma_device *core)
 		return -ENOTSUPP;
 	}
 
+	if (!is_valid_ether_addr(mac)) {
+		dev_err(&core->dev, "Invalid MAC addr: %pM\n", mac);
+		eth_random_addr(mac);
+		dev_warn(&core->dev, "Using random MAC: %pM\n", mac);
+	}
+
 	/* Allocation and references */
 	net_dev = alloc_etherdev(sizeof(*bgmac));
 	if (!net_dev)