mac80211: pid: replace open-coded msecs_to_jiffies

Code directly scaling by HZ and rounding can be more efficiently
and clearly performed with msecs_to_jiffies.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c
index 29bc4c516238..2652a374974e 100644
--- a/net/mac80211/rc80211_pid_algo.c
+++ b/net/mac80211/rc80211_pid_algo.c
@@ -157,9 +157,7 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo,
 
         /* In case nothing happened during the previous control interval, turn
          * the sharpening factor on. */
-        period = (HZ * pinfo->sampling_period + 500) / 1000;
-        if (!period)
-                period = 1;
+        period = msecs_to_jiffies(pinfo->sampling_period);
         if (jiffies - spinfo->last_sample > 2 * period)
                 spinfo->sharp_cnt = pinfo->sharpen_duration;
 
@@ -252,9 +250,7 @@ static void rate_control_pid_tx_status(void *priv, struct ieee80211_supported_ba
         }
 
         /* Update PID controller state. */
-        period = (HZ * pinfo->sampling_period + 500) / 1000;
-        if (!period)
-                period = 1;
+        period = msecs_to_jiffies(pinfo->sampling_period);
         if (time_after(jiffies, spinfo->last_sample + period))
                 rate_control_pid_sample(pinfo, sband, sta, spinfo);
 }