Message ID | 1356525130-2688-1-git-send-email-akinobu.mita@gmail.com |
---|---|
State | Accepted, archived |
Headers | show |
From: Akinobu Mita <akinobu.mita@gmail.com> Date: Wed, 26 Dec 2012 21:32:10 +0900 > 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> > Acked-by: Antonio Quartulli <ordex@autistici.org> Applied, thanks.
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 9f3925a..7d02ebd 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -123,7 +123,7 @@ batadv_iv_ogm_emit_send_time(const struct batadv_priv *bat_priv) unsigned int msecs; msecs = atomic_read(&bat_priv->orig_interval) - BATADV_JITTER; - msecs += (random32() % 2 * BATADV_JITTER); + msecs += random32() % (2 * BATADV_JITTER); return jiffies + msecs_to_jiffies(msecs); }