From 17b8bb3e209d3681e9c94786de845f0d5118eebb Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Wed, 7 Nov 2012 08:14:50 +0000 Subject: [PATCH] net/macb: check all address registers sets The macb driver in u-boot uses the first register set while the at91_ether driver in u-boot uses the second register set. By checking all register set, like at91_ether does, this code can be shared between the drivers. This only changes behavior on macb if no vaild address is found in the first register set. Signed-off-by: Joachim Eastwood Signed-off-by: David S. Miller --- drivers/net/ethernet/cadence/macb.c | 35 ++++++++++++++++++++--------------- 1 file changed, 20 insertions(+), 15 deletions(-) diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c index 13c3c33..3b609be 100644 --- a/drivers/net/ethernet/cadence/macb.c +++ b/drivers/net/ethernet/cadence/macb.c @@ -114,23 +114,28 @@ static void __init macb_get_hwaddr(struct macb *bp) u32 bottom; u16 top; u8 addr[6]; + int i; - bottom = macb_or_gem_readl(bp, SA1B); - top = macb_or_gem_readl(bp, SA1T); - - addr[0] = bottom & 0xff; - addr[1] = (bottom >> 8) & 0xff; - addr[2] = (bottom >> 16) & 0xff; - addr[3] = (bottom >> 24) & 0xff; - addr[4] = top & 0xff; - addr[5] = (top >> 8) & 0xff; - - if (is_valid_ether_addr(addr)) { - memcpy(bp->dev->dev_addr, addr, sizeof(addr)); - } else { - netdev_info(bp->dev, "invalid hw address, using random\n"); - eth_hw_addr_random(bp->dev); + /* Check all 4 address register for vaild address */ + for (i = 0; i < 4; i++) { + bottom = macb_or_gem_readl(bp, SA1B + i * 8); + top = macb_or_gem_readl(bp, SA1T + i * 8); + + addr[0] = bottom & 0xff; + addr[1] = (bottom >> 8) & 0xff; + addr[2] = (bottom >> 16) & 0xff; + addr[3] = (bottom >> 24) & 0xff; + addr[4] = top & 0xff; + addr[5] = (top >> 8) & 0xff; + + if (is_valid_ether_addr(addr)) { + memcpy(bp->dev->dev_addr, addr, sizeof(addr)); + return; + } } + + netdev_info(bp->dev, "invalid hw address, using random\n"); + eth_hw_addr_random(bp->dev); } static int macb_mdio_read(struct mii_bus *bus, int mii_id, int regnum) -- 2.7.4