commit 4b6190b76e34e774d3099ea60b46fba23bb45cf0
Author: Jiri Slaby <ku@bellona.localdomain>
Date:   Tue Jul 17 08:23:10 2007 +0200

    round_jiffies calibration timer (powersave)

diff --git a/ath.c b/ath.c
index 2f3597d..034e23c 100644
--- a/ath.c
+++ b/ath.c
@@ -591,8 +591,8 @@ static int ath_init(struct ath_softc *sc)
 
 	ath5k_hw_set_intr(sc->ah, sc->imask);
 
-	mod_timer(&sc->calib_tim, jiffies +
-			msecs_to_jiffies(ath_calinterval * 1000));
+	mod_timer(&sc->calib_tim, round_jiffies(jiffies +
+			msecs_to_jiffies(ath_calinterval * 1000)));
 
 	ret = 0;
 done:
@@ -1200,8 +1200,8 @@ static void ath_calibrate(unsigned long data)
 		sc->stats.ast_per_calfail++;
 	}
 
-	mod_timer(&sc->calib_tim, jiffies +
-			msecs_to_jiffies(ath_calinterval * 1000));
+	mod_timer(&sc->calib_tim, round_jiffies(jiffies +
+			msecs_to_jiffies(ath_calinterval * 1000)));
 }
 
 static void ath_led_off(unsigned long data)