Re: [PATCH 19/29] batman-adv: fix random jitter calculation

David Miller
2012-12-25T21:37:59Z

From: Akinobu Mita <akinobu.mita@gmail.com>
Date: Wed, 26 Dec 2012 06:35:37 +0900

> 2012/12/25 Antonio Quartulli <ordex@autistici.org>:
>> On Mon, Dec 24, 2012 at 11:14:06AM +0900, Akinobu Mita wrote:
>>> batadv_iv_ogm_emit_send_time() attempts to calculates a random integer
>>> in the range of 'orig_interval +- BATADV_JITTER' by the below lines.
>>>
>>> msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER;
>>> msecs += (random32() % 2 * BATADV_JITTER);
>>>
>>> But it actually gets 'orig_interval' or 'orig_interval - BATADV_JITTER'
>>> because '%' and '*' have same precedence and associativity is
>>> left-to-right.
>>>
>>> This adds the parentheses at the appropriate position so that it matches
>>> original intension.
>>>
>>> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
>>> Cc: Marek Lindner <lindner_marek@yahoo.de>
>>> Cc: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
>>> Cc: Antonio Quartulli <ordex@autistici.org>
>>> Cc: b.a.t.m.a.n@lists.open-mesh.org
>>> Cc: "David S. Miller" <davem@davemloft.net>
>>> Cc: netdev@vger.kernel.org
>>> ---
>>
>> Acked-by: Antonio Quartulli <ordex@autistici.org>
>>
>> But I would suggest to apply this change to net, since it is a fix.
>
> I agree.
> David, please consider to apply this patch for 3.8-rc*.
>

All patches I should consider seriously should be properly
reposted for review and inclusion.