From 46ab9b347d677976b2b4072837cb4065839c0b80 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sat, 29 Jun 2013 19:23:18 +0200 Subject: [PATCH] alx: fix MAC address alignment problem In two places, parts of MAC addresses are used as u32/u16 values. This can cause alignment problems, use put_unaligned and get_unaligned to fix this. Reported-by: Ben Hutchings Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- drivers/net/ethernet/atheros/alx/hw.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/atheros/alx/hw.c b/drivers/net/ethernet/atheros/alx/hw.c index aed48a7..ea99e5d 100644 --- a/drivers/net/ethernet/atheros/alx/hw.c +++ b/drivers/net/ethernet/atheros/alx/hw.c @@ -282,8 +282,8 @@ static bool alx_read_macaddr(struct alx_hw *hw, u8 *addr) mac1 = alx_read_mem32(hw, ALX_STAD1); /* addr should be big-endian */ - *(__be32 *)(addr + 2) = cpu_to_be32(mac0); - *(__be16 *)addr = cpu_to_be16(mac1); + put_unaligned(cpu_to_be32(mac0), (__be32 *)(addr + 2)); + put_unaligned(cpu_to_be16(mac1), (__be16 *)addr); return is_valid_ether_addr(addr); } @@ -326,9 +326,9 @@ void alx_set_macaddr(struct alx_hw *hw, const u8 *addr) u32 val; /* for example: 00-0B-6A-F6-00-DC * STAD0=6AF600DC, STAD1=000B */ - val = be32_to_cpu(*(__be32 *)(addr + 2)); + val = be32_to_cpu(get_unaligned((__be32 *)(addr + 2))); alx_write_mem32(hw, ALX_STAD0, val); - val = be16_to_cpu(*(__be16 *)addr); + val = be16_to_cpu(get_unaligned((__be16 *)addr)); alx_write_mem32(hw, ALX_STAD1, val); } -- 2.7.4