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From: Johannes Berg <johannes@sipsolutions.net>
To: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linville@tuxdriver.com, linux-wireless@vger.kernel.org
Subject: Re: [PATCH] ssb: fix unaligned access to mac address
Date: Mon, 18 Feb 2013 11:10:20 +0100	[thread overview]
Message-ID: <1361182220.8555.2.camel@jlt4.sipsolutions.net> (raw)
In-Reply-To: <1361021140-19871-1-git-send-email-hauke@hauke-m.de> (sfid-20130216_142600_027602_45FAF12B)

On Sat, 2013-02-16 at 14:25 +0100, Hauke Mehrtens wrote:
> The mac address should be aligned to u16 to prevent an unaligned access
> in drivers/ssb/pci.c where it is casted to __be16.
> 
> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
> ---
>  include/linux/ssb/ssb.h |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h
> index 22958d6..457e8eb 100644
> --- a/include/linux/ssb/ssb.h
> +++ b/include/linux/ssb/ssb.h
> @@ -26,6 +26,7 @@ struct ssb_sprom_core_pwr_info {
>  
>  struct ssb_sprom {
>  	u8 revision;
> +	u8 country_code;	/* Country Code */
>  	u8 il0mac[6];		/* MAC address for 802.11b/g */

You should probably add __aligned(2) or so to them to avoid relying on
the struct layout only.

johannes


  reply	other threads:[~2013-02-18 10:10 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-16 13:25 [PATCH] ssb: fix unaligned access to mac address Hauke Mehrtens
2013-02-18 10:10 ` Johannes Berg [this message]
2013-02-18 16:09 ` Rafał Miłecki
2013-02-20 17:31   ` Joe Perches
2013-02-20 17:56     ` Larry Finger
2013-02-20 18:29       ` Joe Perches
2013-02-20 19:17         ` Hauke Mehrtens
2013-02-20 20:11           ` Joe Perches
2013-02-21  3:34             ` Larry Finger
2013-03-09 23:02               ` Rafał Miłecki
2013-03-09 23:31                 ` Larry Finger
2013-03-09 23:56                 ` Larry Finger
2013-03-10 11:36                   ` Rafał Miłecki
2013-03-10 17:35                     ` Larry Finger
2013-03-10 20:57                       ` Rafał Miłecki
2013-02-20 20:16           ` [PATCH 2/2] ssb: Convert ssb_printk to ssb_<level> Joe Perches
2013-02-20 19:07       ` [PATCH] ssb: fix unaligned access to mac address Joe Perches

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