On Sat, 2015-05-09 at 23:18 +0200, Mateusz Kulikowski wrote:
> Add __aligned(2) into ethernet addresses allocated on stack or in non-packed
> structures. Use ETH_ALEN as array length in places where it was hardcoded to 
> 6.
[]
> diff --git a/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c 
> b/drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c
[]
> @@ -321,7 +321,8 @@ static void rtl8192_read_eeprom_info(struct net_device 
> *dev)
>       u8 ICVer8192, ICVer8256;
>       u16 i, usValue, IC_Version;
>       u16 EEPROMId;
> -     u8 bMac_Tmp_Addr[6] = {0x00, 0xe0, 0x4c, 0x00, 0x00, 0x01};
> +     u8 bMac_Tmp_Addr[ETH_ALEN] __aligned(2) = {0x00, 0xe0, 0x4c,
> +                                                0x00, 0x00, 0x01};

While this is safe, as this follows a u16, it's unnecessary.

Also, ideally, this would be
        u8 foo[ETH_ALEN] = {
                1, 2, 3, 4, 5, 6
        };
or just left on a single line.

> diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_core.c 
> b/drivers/staging/rtl8192e/rtl8192e/rtl_core.c
[]
> @@ -2573,8 +2573,9 @@ static int rtl8192_ioctl(struct net_device *dev, struct 
> ifreq *rq, int cmd)
>       int ret = -1;
>       struct rtllib_device *ieee = priv->rtllib;
>       u32 key[4];
> -     u8 broadcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
> -     u8 zero_addr[6] = {0};
> +     u8 broadcast_addr[ETH_ALEN] __aligned(2) = {0xff, 0xff, 0xff,
> +                                                 0xff, 0xff, 0xff};
> +     u8 zero_addr[ETH_ALEN] __aligned(2) = {0};

If these are used only in tests, these are probably better
being removed and using is_<foo>_ether_addr or maybe
if these used in things other than tests, being converted
to static const so they are not reinitialized on each
call of the function.

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