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mac80211: pid: replace open-coded msecs_to_jiffies

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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>
This commit is contained in:
Bob Copeland 2010-01-16 14:36:53 -05:00 committed by John W. Linville
parent 1f44780827
commit 8e9310c179
1 changed files with 2 additions and 6 deletions
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8
net/mac80211/rc80211_pid_algo.c
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@ -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);
}