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Date: Tue, 11 Aug 2015 15:35:56 +0100 From: Liviu Dudau <Liviu.Dudau@....com> To: Stephen Hemminger <stephen@...workplumber.org>, Florian Fainelli <f.fainelli@...il.com> Cc: Mirko Lindner <mlindner@...vell.com>, Ryan Harkin <ryan.harkin@...aro.org>, netdev <netdev@...r.kernel.org>, lkml <linux-kernel@...r.kernel.org> Subject: [PATCH v2 net-next] sky2: use random address if EEPROM is bad On some embedded systems the EEPROM does not contain a valid MAC address. In that case it is better to fallback to a generated mac address and let init scripts fix the value later. Reported-by: Liviu Dudau <Liviu.Dudau@....com> Signed-off-by: Stephen Hemminger <stephen@...workplumber.org> [Changed handcoded setup to use eth_hw_addr_random() instead] Signed-off-by: Liviu Dudau <Liviu.Dudau@....com> --- I have tested this on my Juno platform and I can successfully do an nfsroot boot. Best regards, Liviu drivers/net/ethernet/marvell/sky2.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index d9f4498..c309879 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -4819,6 +4819,13 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port, memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, ETH_ALEN); + /* if the address is invalid, use a random value */ + if (!is_valid_ether_addr(dev->dev_addr)) { + netdev_warn(dev, + "Invalid MAC address, defaulting to random\n"); + eth_hw_addr_random(dev); + } + return dev; } -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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