[PATCH] mac80211: round station cleanup timer

[PATCH] mac80211: round station cleanup timer

[Johannes Berg]

The station cleanup timer runs every ten seconds, the exact
timing is not relevant at all so it can well run together with
other things to save power.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
---
 net/mac80211/sta_info.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- everything.orig/net/mac80211/sta_info.c	2007-12-17 15:03:29.003635524 +0100
+++ everything/net/mac80211/sta_info.c	2007-12-17 15:07:01.303633192 +0100
@@ -14,6 +14,7 @@
 #include <linux/slab.h>
 #include <linux/skbuff.h>
 #include <linux/if_arp.h>
+#include <linux/timer.h>
 
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
@@ -312,7 +313,8 @@ static void sta_info_cleanup(unsigned lo
 	}
 	read_unlock_bh(&local->sta_lock);
 
-	local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+	local->sta_cleanup.expires =
+		round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
 	add_timer(&local->sta_cleanup);
 }
 
@@ -351,7 +353,8 @@ void sta_info_init(struct ieee80211_loca
 	INIT_LIST_HEAD(&local->sta_list);
 
 	init_timer(&local->sta_cleanup);
-	local->sta_cleanup.expires = jiffies + STA_INFO_CLEANUP_INTERVAL;
+	local->sta_cleanup.expires =
+		round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
 	local->sta_cleanup.data = (unsigned long) local;
 	local->sta_cleanup.function = sta_info_cleanup;