diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/732-v5.13-0008-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/732-v5.13-0008-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch | 1935 |
1 files changed, 0 insertions, 1935 deletions
diff --git a/target/linux/generic/backport-5.10/732-v5.13-0008-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch b/target/linux/generic/backport-5.10/732-v5.13-0008-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch deleted file mode 100644 index 583abc9c80..0000000000 --- a/target/linux/generic/backport-5.10/732-v5.13-0008-of-net-pass-the-dst-buffer-to-of_get_mac_address.patch +++ /dev/null @@ -1,1935 +0,0 @@ -From 83216e3988cd196183542937c9bd58b279f946af Mon Sep 17 00:00:00 2001 -From: Michael Walle <michael@walle.cc> -Date: Mon, 12 Apr 2021 19:47:17 +0200 -Subject: [PATCH] of: net: pass the dst buffer to of_get_mac_address() - -of_get_mac_address() returns a "const void*" pointer to a MAC address. -Lately, support to fetch the MAC address by an NVMEM provider was added. -But this will only work with platform devices. It will not work with -PCI devices (e.g. of an integrated root complex) and esp. not with DSA -ports. - -There is an of_* variant of the nvmem binding which works without -devices. The returned data of a nvmem_cell_read() has to be freed after -use. On the other hand the return of_get_mac_address() points to some -static data without a lifetime. The trick for now, was to allocate a -device resource managed buffer which is then returned. This will only -work if we have an actual device. - -Change it, so that the caller of of_get_mac_address() has to supply a -buffer where the MAC address is written to. Unfortunately, this will -touch all drivers which use the of_get_mac_address(). - -Usually the code looks like: - - const char *addr; - addr = of_get_mac_address(np); - if (!IS_ERR(addr)) - ether_addr_copy(ndev->dev_addr, addr); - -This can then be simply rewritten as: - - of_get_mac_address(np, ndev->dev_addr); - -Sometimes is_valid_ether_addr() is used to test the MAC address. -of_get_mac_address() already makes sure, it just returns a valid MAC -address. Thus we can just test its return code. But we have to be -careful if there are still other sources for the MAC address before the -of_get_mac_address(). In this case we have to keep the -is_valid_ether_addr() call. - -The following coccinelle patch was used to convert common cases to the -new style. Afterwards, I've manually gone over the drivers and fixed the -return code variable: either used a new one or if one was already -available use that. Mansour Moufid, thanks for that coccinelle patch! - -<spml> -@a@ -identifier x; -expression y, z; -@@ -- x = of_get_mac_address(y); -+ x = of_get_mac_address(y, z); - <... -- ether_addr_copy(z, x); - ...> - -@@ -identifier a.x; -@@ -- if (<+... x ...+>) {} - -@@ -identifier a.x; -@@ - if (<+... x ...+>) { - ... - } -- else {} - -@@ -identifier a.x; -expression e; -@@ -- if (<+... x ...+>@e) -- {} -- else -+ if (!(e)) - {...} - -@@ -expression x, y, z; -@@ -- x = of_get_mac_address(y, z); -+ of_get_mac_address(y, z); - ... when != x -</spml> - -All drivers, except drivers/net/ethernet/aeroflex/greth.c, were -compile-time tested. - -Suggested-by: Andrew Lunn <andrew@lunn.ch> -Signed-off-by: Michael Walle <michael@walle.cc> -Reviewed-by: Andrew Lunn <andrew@lunn.ch> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - arch/arm/mach-mvebu/kirkwood.c | 3 +- - arch/powerpc/sysdev/tsi108_dev.c | 5 +- - drivers/net/ethernet/aeroflex/greth.c | 6 +-- - drivers/net/ethernet/allwinner/sun4i-emac.c | 10 ++-- - drivers/net/ethernet/altera/altera_tse_main.c | 7 +-- - drivers/net/ethernet/arc/emac_main.c | 8 +-- - drivers/net/ethernet/atheros/ag71xx.c | 7 +-- - drivers/net/ethernet/broadcom/bcm4908_enet.c | 7 +-- - drivers/net/ethernet/broadcom/bcmsysport.c | 7 +-- - drivers/net/ethernet/broadcom/bgmac-bcma.c | 10 ++-- - drivers/net/ethernet/broadcom/bgmac-platform.c | 11 ++-- - drivers/net/ethernet/cadence/macb_main.c | 11 ++-- - drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 8 +-- - drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 5 +- - drivers/net/ethernet/davicom/dm9000.c | 10 ++-- - drivers/net/ethernet/ethoc.c | 6 +-- - drivers/net/ethernet/ezchip/nps_enet.c | 7 +-- - drivers/net/ethernet/freescale/fec_main.c | 7 +-- - drivers/net/ethernet/freescale/fec_mpc52xx.c | 7 +-- - drivers/net/ethernet/freescale/fman/mac.c | 9 ++-- - .../net/ethernet/freescale/fs_enet/fs_enet-main.c | 5 +- - drivers/net/ethernet/freescale/gianfar.c | 8 +-- - drivers/net/ethernet/freescale/ucc_geth.c | 5 +- - drivers/net/ethernet/hisilicon/hisi_femac.c | 7 +-- - drivers/net/ethernet/hisilicon/hix5hd2_gmac.c | 7 +-- - drivers/net/ethernet/lantiq_xrx200.c | 7 +-- - drivers/net/ethernet/marvell/mv643xx_eth.c | 5 +- - drivers/net/ethernet/marvell/mvneta.c | 6 +-- - .../net/ethernet/marvell/prestera/prestera_main.c | 11 ++-- - drivers/net/ethernet/marvell/pxa168_eth.c | 9 +--- - drivers/net/ethernet/marvell/sky2.c | 8 ++- - drivers/net/ethernet/mediatek/mtk_eth_soc.c | 11 ++-- - drivers/net/ethernet/micrel/ks8851_common.c | 7 ++- - drivers/net/ethernet/microchip/lan743x_main.c | 5 +- - drivers/net/ethernet/nxp/lpc_eth.c | 4 +- - drivers/net/ethernet/qualcomm/qca_spi.c | 10 ++-- - drivers/net/ethernet/qualcomm/qca_uart.c | 9 +--- - drivers/net/ethernet/renesas/ravb_main.c | 12 +++-- - drivers/net/ethernet/renesas/sh_eth.c | 5 +- - .../net/ethernet/samsung/sxgbe/sxgbe_platform.c | 13 ++--- - drivers/net/ethernet/socionext/sni_ave.c | 10 ++-- - .../net/ethernet/stmicro/stmmac/dwmac-anarion.c | 2 +- - .../ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-generic.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-intel-plat.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-ipq806x.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-mediatek.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c | 2 +- - .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c | 2 +- - .../net/ethernet/stmicro/stmmac/dwmac-visconti.c | 2 +- - drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 +- - drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- - .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 14 ++--- - .../net/ethernet/stmicro/stmmac/stmmac_platform.h | 2 +- - drivers/net/ethernet/ti/am65-cpsw-nuss.c | 19 ++++--- - drivers/net/ethernet/ti/cpsw.c | 7 +-- - drivers/net/ethernet/ti/cpsw_new.c | 7 +-- - drivers/net/ethernet/ti/davinci_emac.c | 8 +-- - drivers/net/ethernet/ti/netcp_core.c | 7 +-- - drivers/net/ethernet/wiznet/w5100-spi.c | 8 ++- - drivers/net/ethernet/wiznet/w5100.c | 2 +- - drivers/net/ethernet/xilinx/ll_temac_main.c | 8 +-- - drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 15 +++--- - drivers/net/ethernet/xilinx/xilinx_emaclite.c | 8 +-- - drivers/net/wireless/ath/ath9k/init.c | 5 +- - drivers/net/wireless/mediatek/mt76/eeprom.c | 9 +--- - drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 6 +-- - drivers/of/of_net.c | 60 ++++++++++------------ - drivers/staging/octeon/ethernet.c | 10 ++-- - drivers/staging/wfx/main.c | 7 ++- - include/linux/of_net.h | 6 +-- - include/net/dsa.h | 2 +- - net/dsa/dsa2.c | 2 +- - net/dsa/slave.c | 2 +- - net/ethernet/eth.c | 11 ++-- - 85 files changed, 218 insertions(+), 364 deletions(-) - ---- a/arch/arm/mach-mvebu/kirkwood.c -+++ b/arch/arm/mach-mvebu/kirkwood.c -@@ -84,6 +84,7 @@ static void __init kirkwood_dt_eth_fixup - struct device_node *pnp = of_get_parent(np); - struct clk *clk; - struct property *pmac; -+ u8 tmpmac[ETH_ALEN]; - void __iomem *io; - u8 *macaddr; - u32 reg; -@@ -93,7 +94,7 @@ static void __init kirkwood_dt_eth_fixup - - /* skip disabled nodes or nodes with valid MAC address*/ - if (!of_device_is_available(pnp) || -- !IS_ERR(of_get_mac_address(np))) -+ !of_get_mac_address(np, tmpmac)) - goto eth_fixup_skip; - - clk = of_clk_get(pnp, 0); ---- a/arch/powerpc/sysdev/tsi108_dev.c -+++ b/arch/powerpc/sysdev/tsi108_dev.c -@@ -73,7 +73,6 @@ static int __init tsi108_eth_of_init(voi - struct device_node *phy, *mdio; - hw_info tsi_eth_data; - const unsigned int *phy_id; -- const void *mac_addr; - const phandle *ph; - - memset(r, 0, sizeof(r)); -@@ -101,9 +100,7 @@ static int __init tsi108_eth_of_init(voi - goto err; - } - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(tsi_eth_data.mac_addr, mac_addr); -+ of_get_mac_address(np, tsi_eth_data.mac_addr); - - ph = of_get_property(np, "mdio-handle", NULL); - mdio = of_find_node_by_phandle(*ph); ---- a/drivers/net/ethernet/aeroflex/greth.c -+++ b/drivers/net/ethernet/aeroflex/greth.c -@@ -1450,10 +1450,10 @@ static int greth_of_probe(struct platfor - break; - } - if (i == 6) { -- const u8 *addr; -+ u8 addr[ETH_ALEN]; - -- addr = of_get_mac_address(ofdev->dev.of_node); -- if (!IS_ERR(addr)) { -+ err = of_get_mac_address(ofdev->dev.of_node, addr); -+ if (!err) { - for (i = 0; i < 6; i++) - macaddr[i] = (unsigned int) addr[i]; - } else { ---- a/drivers/net/ethernet/allwinner/sun4i-emac.c -+++ b/drivers/net/ethernet/allwinner/sun4i-emac.c -@@ -790,7 +790,6 @@ static int emac_probe(struct platform_de - struct emac_board_info *db; - struct net_device *ndev; - int ret = 0; -- const char *mac_addr; - - ndev = alloc_etherdev(sizeof(struct emac_board_info)); - if (!ndev) { -@@ -853,12 +852,9 @@ static int emac_probe(struct platform_de - } - - /* Read MAC-address from DT */ -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -- -- /* Check if the MAC address is valid, if not get a random one */ -- if (!is_valid_ether_addr(ndev->dev_addr)) { -+ ret = of_get_mac_address(np, ndev->dev_addr); -+ if (ret) { -+ /* if the MAC address is invalid get a random one */ - eth_hw_addr_random(ndev); - dev_warn(&pdev->dev, "using random MAC address %pM\n", - ndev->dev_addr); ---- a/drivers/net/ethernet/altera/altera_tse_main.c -+++ b/drivers/net/ethernet/altera/altera_tse_main.c -@@ -1355,7 +1355,6 @@ static int altera_tse_probe(struct platf - struct resource *control_port; - struct resource *dma_res; - struct altera_tse_private *priv; -- const unsigned char *macaddr; - void __iomem *descmap; - const struct of_device_id *of_id = NULL; - -@@ -1532,10 +1531,8 @@ static int altera_tse_probe(struct platf - priv->rx_dma_buf_sz = ALTERA_RXDMABUFFER_SIZE; - - /* get default MAC address from device tree */ -- macaddr = of_get_mac_address(pdev->dev.of_node); -- if (!IS_ERR(macaddr)) -- ether_addr_copy(ndev->dev_addr, macaddr); -- else -+ ret = of_get_mac_address(pdev->dev.of_node, ndev->dev_addr); -+ if (ret) - eth_hw_addr_random(ndev); - - /* get phy addr and create mdio */ ---- a/drivers/net/ethernet/arc/emac_main.c -+++ b/drivers/net/ethernet/arc/emac_main.c -@@ -857,7 +857,6 @@ int arc_emac_probe(struct net_device *nd - struct device_node *phy_node; - struct phy_device *phydev = NULL; - struct arc_emac_priv *priv; -- const char *mac_addr; - unsigned int id, clock_frequency, irq; - int err; - -@@ -942,11 +941,8 @@ int arc_emac_probe(struct net_device *nd - } - - /* Get MAC address from device tree */ -- mac_addr = of_get_mac_address(dev->of_node); -- -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -- else -+ err = of_get_mac_address(dev->of_node, ndev->dev_addr); -+ if (err) - eth_hw_addr_random(ndev); - - arc_emac_set_address_internal(ndev); ---- a/drivers/net/ethernet/atheros/ag71xx.c -+++ b/drivers/net/ethernet/atheros/ag71xx.c -@@ -1857,7 +1857,6 @@ static int ag71xx_probe(struct platform_ - const struct ag71xx_dcfg *dcfg; - struct net_device *ndev; - struct resource *res; -- const void *mac_addr; - int tx_size, err, i; - struct ag71xx *ag; - -@@ -1953,10 +1952,8 @@ static int ag71xx_probe(struct platform_ - ag->stop_desc->ctrl = 0; - ag->stop_desc->next = (u32)ag->stop_desc_dma; - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- memcpy(ndev->dev_addr, mac_addr, ETH_ALEN); -- if (IS_ERR(mac_addr) || !is_valid_ether_addr(ndev->dev_addr)) { -+ err = of_get_mac_address(np, ndev->dev_addr); -+ if (err) { - netif_err(ag, probe, ndev, "invalid MAC address, using random address\n"); - eth_random_addr(ndev->dev_addr); - } ---- a/drivers/net/ethernet/broadcom/bcmsysport.c -+++ b/drivers/net/ethernet/broadcom/bcmsysport.c -@@ -2468,7 +2468,6 @@ static int bcm_sysport_probe(struct plat - struct bcm_sysport_priv *priv; - struct device_node *dn; - struct net_device *dev; -- const void *macaddr; - u32 txq, rxq; - int ret; - -@@ -2563,12 +2562,10 @@ static int bcm_sysport_probe(struct plat - } - - /* Initialize netdevice members */ -- macaddr = of_get_mac_address(dn); -- if (IS_ERR(macaddr)) { -+ ret = of_get_mac_address(dn, dev->dev_addr); -+ if (ret) { - dev_warn(&pdev->dev, "using random Ethernet MAC\n"); - eth_hw_addr_random(dev); -- } else { -- ether_addr_copy(dev->dev_addr, macaddr); - } - - SET_NETDEV_DEV(dev, &pdev->dev); ---- a/drivers/net/ethernet/broadcom/bgmac-bcma.c -+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c -@@ -115,7 +115,7 @@ static int bgmac_probe(struct bcma_devic - struct ssb_sprom *sprom = &core->bus->sprom; - struct mii_bus *mii_bus; - struct bgmac *bgmac; -- const u8 *mac = NULL; -+ const u8 *mac; - int err; - - bgmac = bgmac_alloc(&core->dev); -@@ -128,11 +128,10 @@ static int bgmac_probe(struct bcma_devic - - bcma_set_drvdata(core, bgmac); - -- if (bgmac->dev->of_node) -- mac = of_get_mac_address(bgmac->dev->of_node); -+ err = of_get_mac_address(bgmac->dev->of_node, bgmac->net_dev->dev_addr); - - /* If no MAC address assigned via device tree, check SPROM */ -- if (IS_ERR_OR_NULL(mac)) { -+ if (err) { - switch (core->core_unit) { - case 0: - mac = sprom->et0mac; -@@ -149,10 +148,9 @@ static int bgmac_probe(struct bcma_devic - err = -ENOTSUPP; - goto err; - } -+ ether_addr_copy(bgmac->net_dev->dev_addr, mac); - } - -- ether_addr_copy(bgmac->net_dev->dev_addr, mac); -- - /* On BCM4706 we need common core to access PHY */ - if (core->id.id == BCMA_CORE_4706_MAC_GBIT && - !core->bus->drv_gmac_cmn.core) { ---- a/drivers/net/ethernet/broadcom/bgmac-platform.c -+++ b/drivers/net/ethernet/broadcom/bgmac-platform.c -@@ -173,7 +173,7 @@ static int bgmac_probe(struct platform_d - struct device_node *np = pdev->dev.of_node; - struct bgmac *bgmac; - struct resource *regs; -- const u8 *mac_addr; -+ int ret; - - bgmac = bgmac_alloc(&pdev->dev); - if (!bgmac) -@@ -192,11 +192,10 @@ static int bgmac_probe(struct platform_d - bgmac->dev = &pdev->dev; - bgmac->dma_dev = &pdev->dev; - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(bgmac->net_dev->dev_addr, mac_addr); -- else -- dev_warn(&pdev->dev, "MAC address not present in device tree\n"); -+ ret = of_get_mac_address(np, bgmac->net_dev->dev_addr); -+ if (ret) -+ dev_warn(&pdev->dev, -+ "MAC address not present in device tree\n"); - - bgmac->irq = platform_get_irq(pdev, 0); - if (bgmac->irq < 0) ---- a/drivers/net/ethernet/cadence/macb_main.c -+++ b/drivers/net/ethernet/cadence/macb_main.c -@@ -4484,7 +4484,6 @@ static int macb_probe(struct platform_de - struct net_device *dev; - struct resource *regs; - void __iomem *mem; -- const char *mac; - struct macb *bp; - int err, val; - -@@ -4597,15 +4596,11 @@ static int macb_probe(struct platform_de - if (bp->caps & MACB_CAPS_NEEDS_RSTONUBR) - bp->rx_intr_mask |= MACB_BIT(RXUBR); - -- mac = of_get_mac_address(np); -- if (PTR_ERR(mac) == -EPROBE_DEFER) { -- err = -EPROBE_DEFER; -+ err = of_get_mac_address(np, bp->dev->dev_addr); -+ if (err == -EPROBE_DEFER) - goto err_out_free_netdev; -- } else if (!IS_ERR_OR_NULL(mac)) { -- ether_addr_copy(bp->dev->dev_addr, mac); -- } else { -+ else if (err) - macb_get_hwaddr(bp); -- } - - err = of_get_phy_mode(np, &interface); - if (err) ---- a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c -+++ b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c -@@ -1385,7 +1385,6 @@ static int octeon_mgmt_probe(struct plat - struct net_device *netdev; - struct octeon_mgmt *p; - const __be32 *data; -- const u8 *mac; - struct resource *res_mix; - struct resource *res_agl; - struct resource *res_agl_prt_ctl; -@@ -1502,11 +1501,8 @@ static int octeon_mgmt_probe(struct plat - netdev->min_mtu = 64 - OCTEON_MGMT_RX_HEADROOM; - netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM - VLAN_HLEN; - -- mac = of_get_mac_address(pdev->dev.of_node); -- -- if (!IS_ERR(mac)) -- ether_addr_copy(netdev->dev_addr, mac); -- else -+ result = of_get_mac_address(pdev->dev.of_node, netdev->dev_addr); -+ if (result) - eth_hw_addr_random(netdev); - - p->phy_np = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0); ---- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c -+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c -@@ -1476,7 +1476,6 @@ static int bgx_init_of_phy(struct bgx *b - device_for_each_child_node(&bgx->pdev->dev, fwn) { - struct phy_device *pd; - struct device_node *phy_np; -- const char *mac; - - /* Should always be an OF node. But if it is not, we - * cannot handle it, so exit the loop. -@@ -1485,9 +1484,7 @@ static int bgx_init_of_phy(struct bgx *b - if (!node) - break; - -- mac = of_get_mac_address(node); -- if (!IS_ERR(mac)) -- ether_addr_copy(bgx->lmac[lmac].mac, mac); -+ of_get_mac_address(node, bgx->lmac[lmac].mac); - - SET_NETDEV_DEV(&bgx->lmac[lmac].netdev, &bgx->pdev->dev); - bgx->lmac[lmac].lmacid = lmac; ---- a/drivers/net/ethernet/davicom/dm9000.c -+++ b/drivers/net/ethernet/davicom/dm9000.c -@@ -1388,7 +1388,7 @@ static struct dm9000_plat_data *dm9000_p - { - struct dm9000_plat_data *pdata; - struct device_node *np = dev->of_node; -- const void *mac_addr; -+ int ret; - - if (!IS_ENABLED(CONFIG_OF) || !np) - return ERR_PTR(-ENXIO); -@@ -1402,11 +1402,9 @@ static struct dm9000_plat_data *dm9000_p - if (of_find_property(np, "davicom,no-eeprom", NULL)) - pdata->flags |= DM9000_PLATF_NO_EEPROM; - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(pdata->dev_addr, mac_addr); -- else if (PTR_ERR(mac_addr) == -EPROBE_DEFER) -- return ERR_CAST(mac_addr); -+ ret = of_get_mac_address(np, pdata->dev_addr); -+ if (ret == -EPROBE_DEFER) -+ return ERR_PTR(ret); - - return pdata; - } ---- a/drivers/net/ethernet/ethoc.c -+++ b/drivers/net/ethernet/ethoc.c -@@ -1151,11 +1151,7 @@ static int ethoc_probe(struct platform_d - ether_addr_copy(netdev->dev_addr, pdata->hwaddr); - priv->phy_id = pdata->phy_id; - } else { -- const void *mac; -- -- mac = of_get_mac_address(pdev->dev.of_node); -- if (!IS_ERR(mac)) -- ether_addr_copy(netdev->dev_addr, mac); -+ of_get_mac_address(pdev->dev.of_node, netdev->dev_addr); - priv->phy_id = -1; - } - ---- a/drivers/net/ethernet/ezchip/nps_enet.c -+++ b/drivers/net/ethernet/ezchip/nps_enet.c -@@ -575,7 +575,6 @@ static s32 nps_enet_probe(struct platfor - struct net_device *ndev; - struct nps_enet_priv *priv; - s32 err = 0; -- const char *mac_addr; - - if (!dev->of_node) - return -ENODEV; -@@ -602,10 +601,8 @@ static s32 nps_enet_probe(struct platfor - dev_dbg(dev, "Registers base address is 0x%p\n", priv->regs_base); - - /* set kernel MAC address to dev */ -- mac_addr = of_get_mac_address(dev->of_node); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -- else -+ err = of_get_mac_address(dev->of_node, ndev->dev_addr); -+ if (err) - eth_hw_addr_random(ndev); - - /* Get IRQ number */ ---- a/drivers/net/ethernet/freescale/fec_main.c -+++ b/drivers/net/ethernet/freescale/fec_main.c -@@ -1666,6 +1666,7 @@ static void fec_get_mac(struct net_devic - struct fec_enet_private *fep = netdev_priv(ndev); - struct fec_platform_data *pdata = dev_get_platdata(&fep->pdev->dev); - unsigned char *iap, tmpaddr[ETH_ALEN]; -+ int ret; - - /* - * try to get mac address in following order: -@@ -1681,9 +1682,9 @@ static void fec_get_mac(struct net_devic - if (!is_valid_ether_addr(iap)) { - struct device_node *np = fep->pdev->dev.of_node; - if (np) { -- const char *mac = of_get_mac_address(np); -- if (!IS_ERR(mac)) -- iap = (unsigned char *) mac; -+ ret = of_get_mac_address(np, tmpaddr); -+ if (!ret) -+ iap = tmpaddr; - } - } - ---- a/drivers/net/ethernet/freescale/fec_mpc52xx.c -+++ b/drivers/net/ethernet/freescale/fec_mpc52xx.c -@@ -813,7 +813,6 @@ static int mpc52xx_fec_probe(struct plat - const u32 *prop; - int prop_size; - struct device_node *np = op->dev.of_node; -- const char *mac_addr; - - phys_addr_t rx_fifo; - phys_addr_t tx_fifo; -@@ -891,10 +890,8 @@ static int mpc52xx_fec_probe(struct plat - * - * First try to read MAC address from DT - */ -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) { -- ether_addr_copy(ndev->dev_addr, mac_addr); -- } else { -+ rv = of_get_mac_address(np, ndev->dev_addr); -+ if (rv) { - struct mpc52xx_fec __iomem *fec = priv->fec; - - /* ---- a/drivers/net/ethernet/freescale/fman/mac.c -+++ b/drivers/net/ethernet/freescale/fman/mac.c -@@ -616,7 +616,6 @@ static int mac_probe(struct platform_dev - struct platform_device *of_dev; - struct resource res; - struct mac_priv_s *priv; -- const u8 *mac_addr; - u32 val; - u8 fman_id; - phy_interface_t phy_if; -@@ -734,11 +733,9 @@ static int mac_probe(struct platform_dev - priv->cell_index = (u8)val; - - /* Get the MAC address */ -- mac_addr = of_get_mac_address(mac_node); -- if (IS_ERR(mac_addr)) -+ err = of_get_mac_address(mac_node, mac_dev->addr); -+ if (err) - dev_warn(dev, "of_get_mac_address(%pOF) failed\n", mac_node); -- else -- ether_addr_copy(mac_dev->addr, mac_addr); - - /* Get the port handles */ - nph = of_count_phandle_with_args(mac_node, "fsl,fman-ports", NULL); -@@ -864,7 +861,7 @@ static int mac_probe(struct platform_dev - if (err < 0) - dev_err(dev, "fman_set_mac_active_pause() = %d\n", err); - -- if (!IS_ERR(mac_addr)) -+ if (!is_zero_ether_addr(mac_dev->addr)) - dev_info(dev, "FMan MAC address: %pM\n", mac_dev->addr); - - priv->eth_dev = dpaa_eth_add_device(fman_id, mac_dev); ---- a/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c -+++ b/drivers/net/ethernet/freescale/fs_enet/fs_enet-main.c -@@ -918,7 +918,6 @@ static int fs_enet_probe(struct platform - const u32 *data; - struct clk *clk; - int err; -- const u8 *mac_addr; - const char *phy_connection_type; - int privsize, len, ret = -ENODEV; - -@@ -1006,9 +1005,7 @@ static int fs_enet_probe(struct platform - spin_lock_init(&fep->lock); - spin_lock_init(&fep->tx_lock); - -- mac_addr = of_get_mac_address(ofdev->dev.of_node); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -+ of_get_mac_address(ofdev->dev.of_node, ndev->dev_addr); - - ret = fep->ops->allocate_bd(ndev); - if (ret) ---- a/drivers/net/ethernet/freescale/gianfar.c -+++ b/drivers/net/ethernet/freescale/gianfar.c -@@ -641,7 +641,6 @@ static phy_interface_t gfar_get_interfac - static int gfar_of_init(struct platform_device *ofdev, struct net_device **pdev) - { - const char *model; -- const void *mac_addr; - int err = 0, i; - phy_interface_t interface; - struct net_device *dev = NULL; -@@ -783,11 +782,8 @@ static int gfar_of_init(struct platform_ - if (stash_len || stash_idx) - priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING; - -- mac_addr = of_get_mac_address(np); -- -- if (!IS_ERR(mac_addr)) { -- ether_addr_copy(dev->dev_addr, mac_addr); -- } else { -+ err = of_get_mac_address(np, dev->dev_addr); -+ if (err) { - eth_hw_addr_random(dev); - dev_info(&ofdev->dev, "Using random MAC address: %pM\n", dev->dev_addr); - } ---- a/drivers/net/ethernet/freescale/ucc_geth.c -+++ b/drivers/net/ethernet/freescale/ucc_geth.c -@@ -3696,7 +3696,6 @@ static int ucc_geth_probe(struct platfor - int err, ucc_num, max_speed = 0; - const unsigned int *prop; - const char *sprop; -- const void *mac_addr; - phy_interface_t phy_interface; - static const int enet_to_speed[] = { - SPEED_10, SPEED_10, SPEED_10, -@@ -3906,9 +3905,7 @@ static int ucc_geth_probe(struct platfor - goto err_free_netdev; - } - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(dev->dev_addr, mac_addr); -+ of_get_mac_address(np, dev->dev_addr); - - ugeth->ug_info = ug_info; - ugeth->dev = device; ---- a/drivers/net/ethernet/hisilicon/hisi_femac.c -+++ b/drivers/net/ethernet/hisilicon/hisi_femac.c -@@ -772,7 +772,6 @@ static int hisi_femac_drv_probe(struct p - struct net_device *ndev; - struct hisi_femac_priv *priv; - struct phy_device *phy; -- const char *mac_addr; - int ret; - - ndev = alloc_etherdev(sizeof(*priv)); -@@ -842,10 +841,8 @@ static int hisi_femac_drv_probe(struct p - (unsigned long)phy->phy_id, - phy_modes(phy->interface)); - -- mac_addr = of_get_mac_address(node); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -- if (!is_valid_ether_addr(ndev->dev_addr)) { -+ ret = of_get_mac_address(node, ndev->dev_addr); -+ if (ret) { - eth_hw_addr_random(ndev); - dev_warn(dev, "using random MAC address %pM\n", - ndev->dev_addr); ---- a/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c -+++ b/drivers/net/ethernet/hisilicon/hix5hd2_gmac.c -@@ -1098,7 +1098,6 @@ static int hix5hd2_dev_probe(struct plat - struct net_device *ndev; - struct hix5hd2_priv *priv; - struct mii_bus *bus; -- const char *mac_addr; - int ret; - - ndev = alloc_etherdev(sizeof(struct hix5hd2_priv)); -@@ -1220,10 +1219,8 @@ static int hix5hd2_dev_probe(struct plat - goto out_phy_node; - } - -- mac_addr = of_get_mac_address(node); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -- if (!is_valid_ether_addr(ndev->dev_addr)) { -+ ret = of_get_mac_address(node, ndev->dev_addr); -+ if (ret) { - eth_hw_addr_random(ndev); - netdev_warn(ndev, "using random MAC address %pM\n", - ndev->dev_addr); ---- a/drivers/net/ethernet/lantiq_xrx200.c -+++ b/drivers/net/ethernet/lantiq_xrx200.c -@@ -440,7 +440,6 @@ static int xrx200_probe(struct platform_ - struct resource *res; - struct xrx200_priv *priv; - struct net_device *net_dev; -- const u8 *mac; - int err; - - /* alloc the network device */ -@@ -484,10 +483,8 @@ static int xrx200_probe(struct platform_ - return PTR_ERR(priv->clk); - } - -- mac = of_get_mac_address(np); -- if (!IS_ERR(mac)) -- ether_addr_copy(net_dev->dev_addr, mac); -- else -+ err = of_get_mac_address(np, net_dev->dev_addr); -+ if (err) - eth_hw_addr_random(net_dev); - - /* bring up the dma engine and IP core */ ---- a/drivers/net/ethernet/marvell/mv643xx_eth.c -+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c -@@ -2701,7 +2701,6 @@ static int mv643xx_eth_shared_of_add_por - struct platform_device *ppdev; - struct mv643xx_eth_platform_data ppd; - struct resource res; -- const char *mac_addr; - int ret; - int dev_num = 0; - -@@ -2732,9 +2731,7 @@ static int mv643xx_eth_shared_of_add_por - return -EINVAL; - } - -- mac_addr = of_get_mac_address(pnp); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ppd.mac_addr, mac_addr); -+ of_get_mac_address(pnp, ppd.mac_addr); - - mv643xx_eth_property(pnp, "tx-queue-size", ppd.tx_queue_size); - mv643xx_eth_property(pnp, "tx-sram-addr", ppd.tx_sram_addr); ---- a/drivers/net/ethernet/marvell/mvneta.c -+++ b/drivers/net/ethernet/marvell/mvneta.c -@@ -5062,7 +5062,6 @@ static int mvneta_probe(struct platform_ - struct net_device *dev; - struct phylink *phylink; - struct phy *comphy; -- const char *dt_mac_addr; - char hw_mac_addr[ETH_ALEN]; - phy_interface_t phy_mode; - const char *mac_from; -@@ -5158,10 +5157,9 @@ static int mvneta_probe(struct platform_ - goto err_free_ports; - } - -- dt_mac_addr = of_get_mac_address(dn); -- if (!IS_ERR(dt_mac_addr)) { -+ err = of_get_mac_address(dn, dev->dev_addr); -+ if (!err) { - mac_from = "device tree"; -- ether_addr_copy(dev->dev_addr, dt_mac_addr); - } else { - mvneta_get_mac_addr(pp, hw_mac_addr); - if (is_valid_ether_addr(hw_mac_addr)) { ---- a/drivers/net/ethernet/marvell/prestera/prestera_main.c -+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c -@@ -466,20 +466,17 @@ static int prestera_switch_set_base_mac_ - { - struct device_node *base_mac_np; - struct device_node *np; -- const char *base_mac; -+ int ret; - - np = of_find_compatible_node(NULL, NULL, "marvell,prestera"); - base_mac_np = of_parse_phandle(np, "base-mac-provider", 0); - -- base_mac = of_get_mac_address(base_mac_np); -- of_node_put(base_mac_np); -- if (!IS_ERR(base_mac)) -- ether_addr_copy(sw->base_mac, base_mac); -- -- if (!is_valid_ether_addr(sw->base_mac)) { -+ ret = of_get_mac_address(base_mac_np, sw->base_mac); -+ if (ret) { - eth_random_addr(sw->base_mac); - dev_info(prestera_dev(sw), "using random base mac address\n"); - } -+ of_node_put(base_mac_np); - - return prestera_hw_switch_mac_set(sw, sw->base_mac); - } ---- a/drivers/net/ethernet/marvell/pxa168_eth.c -+++ b/drivers/net/ethernet/marvell/pxa168_eth.c -@@ -1392,7 +1392,6 @@ static int pxa168_eth_probe(struct platf - struct resource *res; - struct clk *clk; - struct device_node *np; -- const unsigned char *mac_addr = NULL; - int err; - - printk(KERN_NOTICE "PXA168 10/100 Ethernet Driver\n"); -@@ -1435,12 +1434,8 @@ static int pxa168_eth_probe(struct platf - - INIT_WORK(&pep->tx_timeout_task, pxa168_eth_tx_timeout_task); - -- if (pdev->dev.of_node) -- mac_addr = of_get_mac_address(pdev->dev.of_node); -- -- if (!IS_ERR_OR_NULL(mac_addr)) { -- ether_addr_copy(dev->dev_addr, mac_addr); -- } else { -+ err = of_get_mac_address(pdev->dev.of_node, dev->dev_addr); -+ if (err) { - /* try reading the mac address, if set by the bootloader */ - pxa168_eth_get_mac_address(dev, dev->dev_addr); - if (!is_valid_ether_addr(dev->dev_addr)) { ---- a/drivers/net/ethernet/marvell/sky2.c -+++ b/drivers/net/ethernet/marvell/sky2.c -@@ -4725,7 +4725,7 @@ static struct net_device *sky2_init_netd - { - struct sky2_port *sky2; - struct net_device *dev = alloc_etherdev(sizeof(*sky2)); -- const void *iap; -+ int ret; - - if (!dev) - return NULL; -@@ -4795,10 +4795,8 @@ static struct net_device *sky2_init_netd - * 1) from device tree data - * 2) from internal registers set by bootloader - */ -- iap = of_get_mac_address(hw->pdev->dev.of_node); -- if (!IS_ERR(iap)) -- ether_addr_copy(dev->dev_addr, iap); -- else -+ ret = of_get_mac_address(hw->pdev->dev.of_node, dev->dev_addr); -+ if (ret) - memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8, - ETH_ALEN); - ---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c -+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c -@@ -2605,14 +2605,11 @@ static int __init mtk_init(struct net_de - { - struct mtk_mac *mac = netdev_priv(dev); - struct mtk_eth *eth = mac->hw; -- const char *mac_addr; -+ int ret; - -- mac_addr = of_get_mac_address(mac->of_node); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(dev->dev_addr, mac_addr); -- -- /* If the mac address is invalid, use random mac address */ -- if (!is_valid_ether_addr(dev->dev_addr)) { -+ ret = of_get_mac_address(mac->of_node, dev->dev_addr); -+ if (ret) { -+ /* If the mac address is invalid, use random mac address */ - eth_hw_addr_random(dev); - dev_err(eth->dev, "generated random MAC address %pM\n", - dev->dev_addr); ---- a/drivers/net/ethernet/micrel/ks8851_common.c -+++ b/drivers/net/ethernet/micrel/ks8851_common.c -@@ -194,11 +194,10 @@ static void ks8851_read_mac_addr(struct - static void ks8851_init_mac(struct ks8851_net *ks, struct device_node *np) - { - struct net_device *dev = ks->netdev; -- const u8 *mac_addr; -+ int ret; - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) { -- ether_addr_copy(dev->dev_addr, mac_addr); -+ ret = of_get_mac_address(np, dev->dev_addr); -+ if (!ret) { - ks8851_write_mac_addr(dev); - return; - } ---- a/drivers/net/ethernet/microchip/lan743x_main.c -+++ b/drivers/net/ethernet/microchip/lan743x_main.c -@@ -2831,7 +2831,6 @@ static int lan743x_pcidev_probe(struct p - { - struct lan743x_adapter *adapter = NULL; - struct net_device *netdev = NULL; -- const void *mac_addr; - int ret = -ENODEV; - - netdev = devm_alloc_etherdev(&pdev->dev, -@@ -2848,9 +2847,7 @@ static int lan743x_pcidev_probe(struct p - NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED; - netdev->max_mtu = LAN743X_MAX_FRAME_SIZE; - -- mac_addr = of_get_mac_address(pdev->dev.of_node); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(adapter->mac_address, mac_addr); -+ of_get_mac_address(pdev->dev.of_node, adapter->mac_address); - - ret = lan743x_pci_init(adapter, pdev); - if (ret) ---- a/drivers/net/ethernet/nxp/lpc_eth.c -+++ b/drivers/net/ethernet/nxp/lpc_eth.c -@@ -1347,9 +1347,7 @@ static int lpc_eth_drv_probe(struct plat - __lpc_get_mac(pldat, ndev->dev_addr); - - if (!is_valid_ether_addr(ndev->dev_addr)) { -- const char *macaddr = of_get_mac_address(np); -- if (!IS_ERR(macaddr)) -- ether_addr_copy(ndev->dev_addr, macaddr); -+ of_get_mac_address(np, ndev->dev_addr); - } - if (!is_valid_ether_addr(ndev->dev_addr)) - eth_hw_addr_random(ndev); ---- a/drivers/net/ethernet/qualcomm/qca_spi.c -+++ b/drivers/net/ethernet/qualcomm/qca_spi.c -@@ -885,7 +885,7 @@ qca_spi_probe(struct spi_device *spi) - struct net_device *qcaspi_devs = NULL; - u8 legacy_mode = 0; - u16 signature; -- const char *mac; -+ int ret; - - if (!spi->dev.of_node) { - dev_err(&spi->dev, "Missing device tree\n"); -@@ -962,12 +962,8 @@ qca_spi_probe(struct spi_device *spi) - - spi_set_drvdata(spi, qcaspi_devs); - -- mac = of_get_mac_address(spi->dev.of_node); -- -- if (!IS_ERR(mac)) -- ether_addr_copy(qca->net_dev->dev_addr, mac); -- -- if (!is_valid_ether_addr(qca->net_dev->dev_addr)) { -+ ret = of_get_mac_address(spi->dev.of_node, qca->net_dev->dev_addr); -+ if (ret) { - eth_hw_addr_random(qca->net_dev); - dev_info(&spi->dev, "Using random MAC address: %pM\n", - qca->net_dev->dev_addr); ---- a/drivers/net/ethernet/qualcomm/qca_uart.c -+++ b/drivers/net/ethernet/qualcomm/qca_uart.c -@@ -323,7 +323,6 @@ static int qca_uart_probe(struct serdev_ - { - struct net_device *qcauart_dev = alloc_etherdev(sizeof(struct qcauart)); - struct qcauart *qca; -- const char *mac; - u32 speed = 115200; - int ret; - -@@ -348,12 +347,8 @@ static int qca_uart_probe(struct serdev_ - - of_property_read_u32(serdev->dev.of_node, "current-speed", &speed); - -- mac = of_get_mac_address(serdev->dev.of_node); -- -- if (!IS_ERR(mac)) -- ether_addr_copy(qca->net_dev->dev_addr, mac); -- -- if (!is_valid_ether_addr(qca->net_dev->dev_addr)) { -+ ret = of_get_mac_address(serdev->dev.of_node, qca->net_dev->dev_addr); -+ if (ret) { - eth_hw_addr_random(qca->net_dev); - dev_info(&serdev->dev, "Using random MAC address: %pM\n", - qca->net_dev->dev_addr); ---- a/drivers/net/ethernet/renesas/ravb_main.c -+++ b/drivers/net/ethernet/renesas/ravb_main.c -@@ -109,11 +109,13 @@ static void ravb_set_buffer_align(struct - * Ethernet AVB device doesn't have ROM for MAC address. - * This function gets the MAC address that was used by a bootloader. - */ --static void ravb_read_mac_address(struct net_device *ndev, const u8 *mac) -+static void ravb_read_mac_address(struct device_node *np, -+ struct net_device *ndev) - { -- if (!IS_ERR(mac)) { -- ether_addr_copy(ndev->dev_addr, mac); -- } else { -+ int ret; -+ -+ ret = of_get_mac_address(np, ndev->dev_addr); -+ if (ret) { - u32 mahr = ravb_read(ndev, MAHR); - u32 malr = ravb_read(ndev, MALR); - -@@ -2189,7 +2191,7 @@ static int ravb_probe(struct platform_de - priv->msg_enable = RAVB_DEF_MSG_ENABLE; - - /* Read and set MAC address */ -- ravb_read_mac_address(ndev, of_get_mac_address(np)); -+ ravb_read_mac_address(np, ndev); - if (!is_valid_ether_addr(ndev->dev_addr)) { - dev_warn(&pdev->dev, - "no valid MAC address supplied, using a random one\n"); ---- a/drivers/net/ethernet/renesas/sh_eth.c -+++ b/drivers/net/ethernet/renesas/sh_eth.c -@@ -3145,7 +3145,6 @@ static struct sh_eth_plat_data *sh_eth_p - struct device_node *np = dev->of_node; - struct sh_eth_plat_data *pdata; - phy_interface_t interface; -- const char *mac_addr; - int ret; - - pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); -@@ -3157,9 +3156,7 @@ static struct sh_eth_plat_data *sh_eth_p - return NULL; - pdata->phy_interface = interface; - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(pdata->mac_addr, mac_addr); -+ of_get_mac_address(np, pdata->mac_addr); - - pdata->no_ether_link = - of_property_read_bool(np, "renesas,no-ether-link"); ---- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c -+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_platform.c -@@ -25,8 +25,7 @@ - - #ifdef CONFIG_OF - static int sxgbe_probe_config_dt(struct platform_device *pdev, -- struct sxgbe_plat_data *plat, -- const char **mac) -+ struct sxgbe_plat_data *plat) - { - struct device_node *np = pdev->dev.of_node; - struct sxgbe_dma_cfg *dma_cfg; -@@ -35,7 +34,6 @@ static int sxgbe_probe_config_dt(struct - if (!np) - return -ENODEV; - -- *mac = of_get_mac_address(np); - err = of_get_phy_mode(np, &plat->interface); - if (err && err != -ENODEV) - return err; -@@ -63,8 +61,7 @@ static int sxgbe_probe_config_dt(struct - } - #else - static int sxgbe_probe_config_dt(struct platform_device *pdev, -- struct sxgbe_plat_data *plat, -- const char **mac) -+ struct sxgbe_plat_data *plat) - { - return -ENOSYS; - } -@@ -85,7 +82,6 @@ static int sxgbe_platform_probe(struct p - void __iomem *addr; - struct sxgbe_priv_data *priv = NULL; - struct sxgbe_plat_data *plat_dat = NULL; -- const char *mac = NULL; - struct net_device *ndev = platform_get_drvdata(pdev); - struct device_node *node = dev->of_node; - -@@ -101,7 +97,7 @@ static int sxgbe_platform_probe(struct p - if (!plat_dat) - return -ENOMEM; - -- ret = sxgbe_probe_config_dt(pdev, plat_dat, &mac); -+ ret = sxgbe_probe_config_dt(pdev, plat_dat); - if (ret) { - pr_err("%s: main dt probe failed\n", __func__); - return ret; -@@ -122,8 +118,7 @@ static int sxgbe_platform_probe(struct p - } - - /* Get MAC address if available (DT) */ -- if (!IS_ERR_OR_NULL(mac)) -- ether_addr_copy(priv->dev->dev_addr, mac); -+ of_get_mac_address(node, priv->dev->dev_addr); - - /* Get the TX/RX IRQ numbers */ - for (i = 0, chan = 1; i < SXGBE_TX_QUEUES; i++) { ---- a/drivers/net/ethernet/socionext/sni_ave.c -+++ b/drivers/net/ethernet/socionext/sni_ave.c -@@ -1559,7 +1559,6 @@ static int ave_probe(struct platform_dev - struct ave_private *priv; - struct net_device *ndev; - struct device_node *np; -- const void *mac_addr; - void __iomem *base; - const char *name; - int i, irq, ret; -@@ -1600,12 +1599,9 @@ static int ave_probe(struct platform_dev - - ndev->max_mtu = AVE_MAX_ETHFRAME - (ETH_HLEN + ETH_FCS_LEN); - -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -- -- /* if the mac address is invalid, use random mac address */ -- if (!is_valid_ether_addr(ndev->dev_addr)) { -+ ret = of_get_mac_address(np, ndev->dev_addr); -+ if (ret) { -+ /* if the mac address is invalid, use random mac address */ - eth_hw_addr_random(ndev); - dev_warn(dev, "Using random MAC address: %pM\n", - ndev->dev_addr); ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-anarion.c -@@ -115,7 +115,7 @@ static int anarion_dwmac_probe(struct pl - if (IS_ERR(gmac)) - return PTR_ERR(gmac); - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c -@@ -445,7 +445,7 @@ static int dwc_eth_dwmac_probe(struct pl - if (IS_ERR(stmmac_res.addr)) - return PTR_ERR(stmmac_res.addr); - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c -@@ -27,7 +27,7 @@ static int dwmac_generic_probe(struct pl - return ret; - - if (pdev->dev.of_node) { -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) { - dev_err(&pdev->dev, "dt configuration failed\n"); - return PTR_ERR(plat_dat); ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c -@@ -226,7 +226,7 @@ static int imx_dwmac_probe(struct platfo - if (!dwmac) - return -ENOMEM; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel-plat.c -@@ -88,7 +88,7 @@ static int intel_eth_plat_probe(struct p - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) { - dev_err(&pdev->dev, "dt configuration failed\n"); - return PTR_ERR(plat_dat); ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c -@@ -255,7 +255,7 @@ static int ipq806x_gmac_probe(struct pla - if (val) - return val; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c -@@ -37,7 +37,7 @@ static int lpc18xx_dwmac_probe(struct pl - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c -@@ -407,7 +407,7 @@ static int mediatek_dwmac_probe(struct p - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c -@@ -52,7 +52,7 @@ static int meson6_dwmac_probe(struct pla - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c -@@ -370,7 +370,7 @@ static int meson8b_dwmac_probe(struct pl - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-oxnas.c -@@ -118,7 +118,7 @@ static int oxnas_dwmac_probe(struct plat - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c -@@ -461,7 +461,7 @@ static int qcom_ethqos_probe(struct plat - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) { - dev_err(&pdev->dev, "dt configuration failed\n"); - return PTR_ERR(plat_dat); ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c -@@ -1392,7 +1392,7 @@ static int rk_gmac_probe(struct platform - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c -@@ -397,7 +397,7 @@ static int socfpga_dwmac_probe(struct pl - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c -@@ -325,7 +325,7 @@ static int sti_dwmac_probe(struct platfo - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c -@@ -371,7 +371,7 @@ static int stm32_dwmac_probe(struct plat - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c -@@ -1203,7 +1203,7 @@ static int sun8i_dwmac_probe(struct plat - if (ret) - return -EINVAL; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c -+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c -@@ -108,7 +108,7 @@ static int sun7i_gmac_probe(struct platf - if (ret) - return ret; - -- plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac); -+ plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); - if (IS_ERR(plat_dat)) - return PTR_ERR(plat_dat); - ---- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h -+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h -@@ -25,7 +25,7 @@ - - struct stmmac_resources { - void __iomem *addr; -- const char *mac; -+ u8 mac[ETH_ALEN]; - int wol_irq; - int lpi_irq; - int irq; ---- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c -+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c -@@ -5019,7 +5019,7 @@ int stmmac_dvr_probe(struct device *devi - priv->wol_irq = res->wol_irq; - priv->lpi_irq = res->lpi_irq; - -- if (!IS_ERR_OR_NULL(res->mac)) -+ if (!is_zero_ether_addr(res->mac)) - memcpy(priv->dev->dev_addr, res->mac, ETH_ALEN); - - dev_set_drvdata(device, priv->dev); ---- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c -+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c -@@ -395,7 +395,7 @@ static int stmmac_of_get_mac_mode(struct - * set some private fields that will be used by the main at runtime. - */ - struct plat_stmmacenet_data * --stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) -+stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac) - { - struct device_node *np = pdev->dev.of_node; - struct plat_stmmacenet_data *plat; -@@ -407,12 +407,12 @@ stmmac_probe_config_dt(struct platform_d - if (!plat) - return ERR_PTR(-ENOMEM); - -- *mac = of_get_mac_address(np); -- if (IS_ERR(*mac)) { -- if (PTR_ERR(*mac) == -EPROBE_DEFER) -- return ERR_CAST(*mac); -+ rc = of_get_mac_address(np, mac); -+ if (rc) { -+ if (rc == -EPROBE_DEFER) -+ return ERR_PTR(rc); - -- *mac = NULL; -+ eth_zero_addr(mac); - } - - phy_mode = device_get_phy_mode(&pdev->dev); -@@ -643,7 +643,7 @@ void stmmac_remove_config_dt(struct plat - } - #else - struct plat_stmmacenet_data * --stmmac_probe_config_dt(struct platform_device *pdev, const char **mac) -+stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac) - { - return ERR_PTR(-EINVAL); - } ---- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h -+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h -@@ -12,7 +12,7 @@ - #include "stmmac.h" - - struct plat_stmmacenet_data * --stmmac_probe_config_dt(struct platform_device *pdev, const char **mac); -+stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac); - void stmmac_remove_config_dt(struct platform_device *pdev, - struct plat_stmmacenet_data *plat); - ---- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c -+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c -@@ -1713,7 +1713,6 @@ static int am65_cpsw_nuss_init_slave_por - - for_each_child_of_node(node, port_np) { - struct am65_cpsw_port *port; -- const void *mac_addr; - u32 port_id; - - /* it is not a slave port node, continue */ -@@ -1796,15 +1795,15 @@ static int am65_cpsw_nuss_init_slave_por - goto of_node_put; - } - -- mac_addr = of_get_mac_address(port_np); -- if (!IS_ERR(mac_addr)) { -- ether_addr_copy(port->slave.mac_addr, mac_addr); -- } else if (am65_cpsw_am654_get_efuse_macid(port_np, -- port->port_id, -- port->slave.mac_addr) || -- !is_valid_ether_addr(port->slave.mac_addr)) { -- random_ether_addr(port->slave.mac_addr); -- dev_err(dev, "Use random MAC address\n"); -+ ret = of_get_mac_address(port_np, port->slave.mac_addr); -+ if (ret) { -+ am65_cpsw_am654_get_efuse_macid(port_np, -+ port->port_id, -+ port->slave.mac_addr); -+ if (!is_valid_ether_addr(port->slave.mac_addr)) { -+ random_ether_addr(port->slave.mac_addr); -+ dev_err(dev, "Use random MAC address\n"); -+ } - } - } - of_node_put(node); ---- a/drivers/net/ethernet/ti/cpsw.c -+++ b/drivers/net/ethernet/ti/cpsw.c -@@ -1308,7 +1308,6 @@ static int cpsw_probe_dt(struct cpsw_pla - - for_each_available_child_of_node(node, slave_node) { - struct cpsw_slave_data *slave_data = data->slave_data + i; -- const void *mac_addr = NULL; - int lenp; - const __be32 *parp; - -@@ -1380,10 +1379,8 @@ static int cpsw_probe_dt(struct cpsw_pla - } - - no_phy_slave: -- mac_addr = of_get_mac_address(slave_node); -- if (!IS_ERR(mac_addr)) { -- ether_addr_copy(slave_data->mac_addr, mac_addr); -- } else { -+ ret = of_get_mac_address(slave_node, slave_data->mac_addr); -+ if (ret) { - ret = ti_cm_get_macid(&pdev->dev, i, - slave_data->mac_addr); - if (ret) ---- a/drivers/net/ethernet/ti/cpsw_new.c -+++ b/drivers/net/ethernet/ti/cpsw_new.c -@@ -1269,7 +1269,6 @@ static int cpsw_probe_dt(struct cpsw_com - - for_each_child_of_node(tmp_node, port_np) { - struct cpsw_slave_data *slave_data; -- const void *mac_addr; - u32 port_id; - - ret = of_property_read_u32(port_np, "reg", &port_id); -@@ -1328,10 +1327,8 @@ static int cpsw_probe_dt(struct cpsw_com - goto err_node_put; - } - -- mac_addr = of_get_mac_address(port_np); -- if (!IS_ERR(mac_addr)) { -- ether_addr_copy(slave_data->mac_addr, mac_addr); -- } else { -+ ret = of_get_mac_address(port_np, slave_data->mac_addr); -+ if (ret) { - ret = ti_cm_get_macid(dev, port_id - 1, - slave_data->mac_addr); - if (ret) ---- a/drivers/net/ethernet/ti/davinci_emac.c -+++ b/drivers/net/ethernet/ti/davinci_emac.c -@@ -1699,7 +1699,6 @@ davinci_emac_of_get_pdata(struct platfor - const struct of_device_id *match; - const struct emac_platform_data *auxdata; - struct emac_platform_data *pdata = NULL; -- const u8 *mac_addr; - - if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node) - return dev_get_platdata(&pdev->dev); -@@ -1711,11 +1710,8 @@ davinci_emac_of_get_pdata(struct platfor - np = pdev->dev.of_node; - pdata->version = EMAC_VERSION_2; - -- if (!is_valid_ether_addr(pdata->mac_addr)) { -- mac_addr = of_get_mac_address(np); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(pdata->mac_addr, mac_addr); -- } -+ if (!is_valid_ether_addr(pdata->mac_addr)) -+ of_get_mac_address(np, pdata->mac_addr); - - of_property_read_u32(np, "ti,davinci-ctrl-reg-offset", - &pdata->ctrl_reg_offset); ---- a/drivers/net/ethernet/ti/netcp_core.c -+++ b/drivers/net/ethernet/ti/netcp_core.c -@@ -1966,7 +1966,6 @@ static int netcp_create_interface(struct - struct resource res; - void __iomem *efuse = NULL; - u32 efuse_mac = 0; -- const void *mac_addr; - u8 efuse_mac_addr[6]; - u32 temp[2]; - int ret = 0; -@@ -2036,10 +2035,8 @@ static int netcp_create_interface(struct - devm_iounmap(dev, efuse); - devm_release_mem_region(dev, res.start, size); - } else { -- mac_addr = of_get_mac_address(node_interface); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(ndev->dev_addr, mac_addr); -- else -+ ret = of_get_mac_address(node_interface, ndev->dev_addr); -+ if (ret) - eth_random_addr(ndev->dev_addr); - } - ---- a/drivers/net/ethernet/wiznet/w5100-spi.c -+++ b/drivers/net/ethernet/wiznet/w5100-spi.c -@@ -423,8 +423,14 @@ static int w5100_spi_probe(struct spi_de - const struct of_device_id *of_id; - const struct w5100_ops *ops; - kernel_ulong_t driver_data; -+ const void *mac = NULL; -+ u8 tmpmac[ETH_ALEN]; - int priv_size; -- const void *mac = of_get_mac_address(spi->dev.of_node); -+ int ret; -+ -+ ret = of_get_mac_address(spi->dev.of_node, tmpmac); -+ if (!ret) -+ mac = tmpmac; - - if (spi->dev.of_node) { - of_id = of_match_device(w5100_of_match, &spi->dev); ---- a/drivers/net/ethernet/wiznet/w5100.c -+++ b/drivers/net/ethernet/wiznet/w5100.c -@@ -1159,7 +1159,7 @@ int w5100_probe(struct device *dev, cons - INIT_WORK(&priv->setrx_work, w5100_setrx_work); - INIT_WORK(&priv->restart_work, w5100_restart_work); - -- if (!IS_ERR_OR_NULL(mac_addr)) -+ if (mac_addr) - memcpy(ndev->dev_addr, mac_addr, ETH_ALEN); - else - eth_hw_addr_random(ndev); ---- a/drivers/net/ethernet/xilinx/ll_temac_main.c -+++ b/drivers/net/ethernet/xilinx/ll_temac_main.c -@@ -438,7 +438,7 @@ static void temac_do_set_mac_address(str - - static int temac_init_mac_address(struct net_device *ndev, const void *address) - { -- ether_addr_copy(ndev->dev_addr, address); -+ memcpy(ndev->dev_addr, address, ETH_ALEN); - if (!is_valid_ether_addr(ndev->dev_addr)) - eth_hw_addr_random(ndev); - temac_do_set_mac_address(ndev); -@@ -1370,7 +1370,7 @@ static int temac_probe(struct platform_d - struct device_node *temac_np = dev_of_node(&pdev->dev), *dma_np; - struct temac_local *lp; - struct net_device *ndev; -- const void *addr; -+ u8 addr[ETH_ALEN]; - __be32 *p; - bool little_endian; - int rc = 0; -@@ -1563,8 +1563,8 @@ static int temac_probe(struct platform_d - - if (temac_np) { - /* Retrieve the MAC address */ -- addr = of_get_mac_address(temac_np); -- if (IS_ERR(addr)) { -+ rc = of_get_mac_address(temac_np, addr); -+ if (rc) { - dev_err(&pdev->dev, "could not find MAC address\n"); - return -ENODEV; - } ---- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c -+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c -@@ -1843,8 +1843,8 @@ static int axienet_probe(struct platform - struct device_node *np; - struct axienet_local *lp; - struct net_device *ndev; -- const void *mac_addr; - struct resource *ethres; -+ u8 mac_addr[ETH_ALEN]; - int addr_width = 32; - u32 value; - -@@ -2044,13 +2044,14 @@ static int axienet_probe(struct platform - dev_info(&pdev->dev, "Ethernet core IRQ not defined\n"); - - /* Retrieve the MAC address */ -- mac_addr = of_get_mac_address(pdev->dev.of_node); -- if (IS_ERR(mac_addr)) { -- dev_warn(&pdev->dev, "could not find MAC address property: %ld\n", -- PTR_ERR(mac_addr)); -- mac_addr = NULL; -+ ret = of_get_mac_address(pdev->dev.of_node, mac_addr); -+ if (!ret) { -+ axienet_set_mac_address(ndev, mac_addr); -+ } else { -+ dev_warn(&pdev->dev, "could not find MAC address property: %d\n", -+ ret); -+ axienet_set_mac_address(ndev, NULL); - } -- axienet_set_mac_address(ndev, mac_addr); - - lp->coalesce_count_rx = XAXIDMA_DFT_RX_THRESHOLD; - lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD; ---- a/drivers/net/ethernet/xilinx/xilinx_emaclite.c -+++ b/drivers/net/ethernet/xilinx/xilinx_emaclite.c -@@ -1107,7 +1107,6 @@ static int xemaclite_of_probe(struct pla - struct net_device *ndev = NULL; - struct net_local *lp = NULL; - struct device *dev = &ofdev->dev; -- const void *mac_address; - - int rc = 0; - -@@ -1149,12 +1148,9 @@ static int xemaclite_of_probe(struct pla - lp->next_rx_buf_to_use = 0x0; - lp->tx_ping_pong = get_bool(ofdev, "xlnx,tx-ping-pong"); - lp->rx_ping_pong = get_bool(ofdev, "xlnx,rx-ping-pong"); -- mac_address = of_get_mac_address(ofdev->dev.of_node); - -- if (!IS_ERR(mac_address)) { -- /* Set the MAC address. */ -- ether_addr_copy(ndev->dev_addr, mac_address); -- } else { -+ rc = of_get_mac_address(ofdev->dev.of_node, ndev->dev_addr); -+ if (rc) { - dev_warn(dev, "No MAC address found, using random\n"); - eth_hw_addr_random(ndev); - } ---- a/drivers/net/wireless/ath/ath9k/init.c -+++ b/drivers/net/wireless/ath/ath9k/init.c -@@ -618,7 +618,6 @@ static int ath9k_of_init(struct ath_soft - struct ath_hw *ah = sc->sc_ah; - struct ath_common *common = ath9k_hw_common(ah); - enum ath_bus_type bus_type = common->bus_ops->ath_bus_type; -- const char *mac; - char eeprom_name[100]; - int ret; - -@@ -641,9 +640,7 @@ static int ath9k_of_init(struct ath_soft - ah->ah_flags |= AH_NO_EEP_SWAP; - } - -- mac = of_get_mac_address(np); -- if (!IS_ERR(mac)) -- ether_addr_copy(common->macaddr, mac); -+ of_get_mac_address(np, common->macaddr); - - return 0; - } ---- a/drivers/net/wireless/mediatek/mt76/eeprom.c -+++ b/drivers/net/wireless/mediatek/mt76/eeprom.c -@@ -90,15 +90,9 @@ out_put_node: - void - mt76_eeprom_override(struct mt76_dev *dev) - { --#ifdef CONFIG_OF - struct device_node *np = dev->dev->of_node; -- const u8 *mac = NULL; - -- if (np) -- mac = of_get_mac_address(np); -- if (!IS_ERR_OR_NULL(mac)) -- ether_addr_copy(dev->macaddr, mac); --#endif -+ of_get_mac_address(np, dev->macaddr); - - if (!is_valid_ether_addr(dev->macaddr)) { - eth_random_addr(dev->macaddr); ---- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c -@@ -990,11 +990,7 @@ static void rt2x00lib_rate(struct ieee80 - - void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr) - { -- const char *mac_addr; -- -- mac_addr = of_get_mac_address(rt2x00dev->dev->of_node); -- if (!IS_ERR(mac_addr)) -- ether_addr_copy(eeprom_mac_addr, mac_addr); -+ of_get_mac_address(rt2x00dev->dev->of_node, eeprom_mac_addr); - - if (!is_valid_ether_addr(eeprom_mac_addr)) { - eth_random_addr(eeprom_mac_addr); ---- a/drivers/of/of_net.c -+++ b/drivers/of/of_net.c -@@ -45,37 +45,29 @@ int of_get_phy_mode(struct device_node * - } - EXPORT_SYMBOL_GPL(of_get_phy_mode); - --static const void *of_get_mac_addr(struct device_node *np, const char *name) -+static int of_get_mac_addr(struct device_node *np, const char *name, u8 *addr) - { - struct property *pp = of_find_property(np, name, NULL); - -- if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value)) -- return pp->value; -- return NULL; -+ if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value)) { -+ memcpy(addr, pp->value, ETH_ALEN); -+ return 0; -+ } -+ return -ENODEV; - } - --static const void *of_get_mac_addr_nvmem(struct device_node *np) -+static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr) - { -- int ret; -- const void *mac; -- u8 nvmem_mac[ETH_ALEN]; - struct platform_device *pdev = of_find_device_by_node(np); -+ int ret; - - if (!pdev) -- return ERR_PTR(-ENODEV); -+ return -ENODEV; - -- ret = nvmem_get_mac_address(&pdev->dev, &nvmem_mac); -- if (ret) { -- put_device(&pdev->dev); -- return ERR_PTR(ret); -- } -- -- mac = devm_kmemdup(&pdev->dev, nvmem_mac, ETH_ALEN, GFP_KERNEL); -+ ret = nvmem_get_mac_address(&pdev->dev, addr); - put_device(&pdev->dev); -- if (!mac) -- return ERR_PTR(-ENOMEM); - -- return mac; -+ return ret; - } - - /** -@@ -98,24 +90,27 @@ static const void *of_get_mac_addr_nvmem - * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists - * but is all zeros. - * -- * Return: Will be a valid pointer on success and ERR_PTR in case of error. -+ * Return: 0 on success and errno in case of error. - */ --const void *of_get_mac_address(struct device_node *np) -+int of_get_mac_address(struct device_node *np, u8 *addr) - { -- const void *addr; -- -- addr = of_get_mac_addr(np, "mac-address"); -- if (addr) -- return addr; -+ int ret; - -- addr = of_get_mac_addr(np, "local-mac-address"); -- if (addr) -- return addr; -+ if (!np) -+ return -ENODEV; - -- addr = of_get_mac_addr(np, "address"); -- if (addr) -- return addr; -+ ret = of_get_mac_addr(np, "mac-address", addr); -+ if (!ret) -+ return 0; -+ -+ ret = of_get_mac_addr(np, "local-mac-address", addr); -+ if (!ret) -+ return 0; -+ -+ ret = of_get_mac_addr(np, "address", addr); -+ if (!ret) -+ return 0; - -- return of_get_mac_addr_nvmem(np); -+ return of_get_mac_addr_nvmem(np, addr); - } - EXPORT_SYMBOL(of_get_mac_address); ---- a/drivers/staging/octeon/ethernet.c -+++ b/drivers/staging/octeon/ethernet.c -@@ -407,14 +407,10 @@ static int cvm_oct_common_set_mac_addres - int cvm_oct_common_init(struct net_device *dev) - { - struct octeon_ethernet *priv = netdev_priv(dev); -- const u8 *mac = NULL; -+ int ret; - -- if (priv->of_node) -- mac = of_get_mac_address(priv->of_node); -- -- if (!IS_ERR_OR_NULL(mac)) -- ether_addr_copy(dev->dev_addr, mac); -- else -+ ret = of_get_mac_address(priv->of_node, dev->dev_addr); -+ if (ret) - eth_hw_addr_random(dev); - - /* ---- a/drivers/staging/wfx/main.c -+++ b/drivers/staging/wfx/main.c -@@ -339,7 +339,6 @@ int wfx_probe(struct wfx_dev *wdev) - { - int i; - int err; -- const void *macaddr; - struct gpio_desc *gpio_saved; - - // During first part of boot, gpio_wakeup cannot yet been used. So -@@ -428,9 +427,9 @@ int wfx_probe(struct wfx_dev *wdev) - - for (i = 0; i < ARRAY_SIZE(wdev->addresses); i++) { - eth_zero_addr(wdev->addresses[i].addr); -- macaddr = of_get_mac_address(wdev->dev->of_node); -- if (!IS_ERR_OR_NULL(macaddr)) { -- ether_addr_copy(wdev->addresses[i].addr, macaddr); -+ err = of_get_mac_address(wdev->dev->of_node, -+ wdev->addresses[i].addr); -+ if (!err) { - wdev->addresses[i].addr[ETH_ALEN - 1] += i; - } else { - ether_addr_copy(wdev->addresses[i].addr, ---- a/include/linux/of_net.h -+++ b/include/linux/of_net.h -@@ -13,7 +13,7 @@ - - struct net_device; - extern int of_get_phy_mode(struct device_node *np, phy_interface_t *interface); --extern const void *of_get_mac_address(struct device_node *np); -+extern int of_get_mac_address(struct device_node *np, u8 *mac); - extern struct net_device *of_find_net_device_by_node(struct device_node *np); - #else - static inline int of_get_phy_mode(struct device_node *np, -@@ -22,9 +22,9 @@ static inline int of_get_phy_mode(struct - return -ENODEV; - } - --static inline const void *of_get_mac_address(struct device_node *np) -+static inline int of_get_mac_address(struct device_node *np, u8 *mac) - { -- return ERR_PTR(-ENODEV); -+ return -ENODEV; - } - - static inline struct net_device *of_find_net_device_by_node(struct device_node *np) ---- a/include/net/dsa.h -+++ b/include/net/dsa.h -@@ -208,7 +208,7 @@ struct dsa_port { - unsigned int index; - const char *name; - struct dsa_port *cpu_dp; -- const char *mac; -+ u8 mac[ETH_ALEN]; - struct device_node *dn; - unsigned int ageing_time; - bool vlan_filtering; ---- a/net/dsa/dsa2.c -+++ b/net/dsa/dsa2.c -@@ -288,7 +288,7 @@ static int dsa_port_setup(struct dsa_por - - break; - case DSA_PORT_TYPE_USER: -- dp->mac = of_get_mac_address(dp->dn); -+ of_get_mac_address(dp->dn, dp->mac); - err = dsa_slave_create(dp); - if (err) - break; ---- a/net/dsa/slave.c -+++ b/net/dsa/slave.c -@@ -1855,7 +1855,7 @@ int dsa_slave_create(struct dsa_port *po - slave_dev->hw_features |= NETIF_F_HW_TC; - slave_dev->features |= NETIF_F_LLTX; - slave_dev->ethtool_ops = &dsa_slave_ethtool_ops; -- if (!IS_ERR_OR_NULL(port->mac)) -+ if (!is_zero_ether_addr(port->mac)) - ether_addr_copy(slave_dev->dev_addr, port->mac); - else - eth_hw_addr_inherit(slave_dev, master); ---- a/net/ethernet/eth.c -+++ b/net/ethernet/eth.c -@@ -506,13 +506,14 @@ unsigned char * __weak arch_get_platform - - int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr) - { -- const unsigned char *addr = NULL; -+ unsigned char *addr; -+ int ret; - -- if (dev->of_node) -- addr = of_get_mac_address(dev->of_node); -- if (IS_ERR_OR_NULL(addr)) -- addr = arch_get_platform_mac_address(); -+ ret = of_get_mac_address(dev->of_node, mac_addr); -+ if (!ret) -+ return 0; - -+ addr = arch_get_platform_mac_address(); - if (!addr) - return -ENODEV; - |