rc80211-pid: fix last_sample initialization
authorStefano Brivio <stefano.brivio@polimi.it>
Wed, 16 Jan 2008 23:38:29 +0000 (00:38 +0100)
committerDavid S. Miller <davem@davemloft.net>
Mon, 28 Jan 2008 23:10:43 +0000 (15:10 -0800)
Fix last_sample initialization. kzalloc'ing the per-STA data wasn't enough,
as jiffies can assume negative values as well. This fixes a bug which
prevented correct PID operation for a while after booting.

Thanks to Michael Buesch for reporting this.

Reported-and-tested-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
net/mac80211/rc80211_pid_algo.c

index 962286d893d6d6a8e7799d2417726c182fc8da99..554c4baed6fbd3d4bdb164eaeea024fcf919bcfb 100644 (file)
@@ -496,6 +496,8 @@ static void *rate_control_pid_alloc_sta(void *priv, gfp_t gfp)
        if (spinfo == NULL)
                return NULL;
 
+       spinfo->last_sample = jiffies;
+
 #ifdef CONFIG_MAC80211_DEBUGFS
        spin_lock_init(&spinfo->events.lock);
        init_waitqueue_head(&spinfo->events.waitqueue);