From 2df408774a653d4839e336e43e321a19567eadaa Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Wed, 24 Feb 2016 00:52:06 +0200 Subject: [PATCH] MIPS: Octeon: device_tree_init: don't fill mac if already set Don't fill MAC address if it's already set. This allows DTB to override the bootinfo. Signed-off-by: Aaro Koskinen Acked-by: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/12589/ Signed-off-by: Ralf Baechle --- arch/mips/cavium-octeon/octeon-platform.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/mips/cavium-octeon/octeon-platform.c b/arch/mips/cavium-octeon/octeon-platform.c index a7d9f07b745d..7aeafedff94e 100644 --- a/arch/mips/cavium-octeon/octeon-platform.c +++ b/arch/mips/cavium-octeon/octeon-platform.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -525,10 +526,17 @@ static void __init octeon_fdt_set_phy(int eth, int phy_addr) static void __init octeon_fdt_set_mac_addr(int n, u64 *pmac) { + const u8 *old_mac; + int old_len; u8 new_mac[6]; u64 mac = *pmac; int r; + old_mac = fdt_getprop(initial_boot_params, n, "local-mac-address", + &old_len); + if (!old_mac || old_len != 6 || is_valid_ether_addr(old_mac)) + return; + new_mac[0] = (mac >> 40) & 0xff; new_mac[1] = (mac >> 32) & 0xff; new_mac[2] = (mac >> 24) & 0xff; -- 2.39.5