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>
diff --git a/net/mac80211/rc80211_pid_algo.c b/net/mac80211/rc80211_pid_algo.c
index 29bc4c5..2652a37 100644
--- a/net/mac80211/rc80211_pid_algo.c
+++ b/net/mac80211/rc80211_pid_algo.c
@@ -157,9 +157,7 @@
/* 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 @@
}
/* 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);
}