From c75a9ad43691de040bead75f1924928111571f9c Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Mon, 22 Nov 2021 22:35:33 +0100 Subject: r8169: fix incorrect mac address assignment The original changes brakes MAC address assignment on older chip versions (see bug report [0]), and it brakes random MAC assignment. is_valid_ether_addr() requires that its argument is word-aligned. Add the missing alignment to array mac_addr. [0] https://bugzilla.kernel.org/show_bug.cgi?id=215087 Fixes: 1c5d09d58748 ("ethernet: r8169: use eth_hw_addr_set()") Reported-by: Richard Herbert Tested-by: Richard Herbert Signed-off-by: Heiner Kallweit Acked-by: Jakub Kicinski Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169_main.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index bbe21db20417..86c44bc5f73f 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -5217,8 +5217,8 @@ static int rtl_get_ether_clk(struct rtl8169_private *tp) static void rtl_init_mac_address(struct rtl8169_private *tp) { + u8 mac_addr[ETH_ALEN] __aligned(2) = {}; struct net_device *dev = tp->dev; - u8 mac_addr[ETH_ALEN]; int rc; rc = eth_platform_get_mac_address(tp_to_dev(tp), mac_addr); @@ -5233,7 +5233,8 @@ static void rtl_init_mac_address(struct rtl8169_private *tp) if (is_valid_ether_addr(mac_addr)) goto done; - eth_hw_addr_random(dev); + eth_random_addr(mac_addr); + dev->addr_assign_type = NET_ADDR_RANDOM; dev_warn(tp_to_dev(tp), "can't read MAC address, setting random one\n"); done: eth_hw_addr_set(dev, mac_addr); -- cgit v1.2.3