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wifi: mac80211: fix center freq calculation in ieee80211_chandef_downgrade

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When mac80211 downgrades working bandwidth, the
center_freq and center_freq1 need to be recalculated.
There is a typo in the case of downgrading bandwidth from
320MHz to 160MHz which would cause a wrong frequency value.

Reviewed-by: Money Wang <Money.Wang@mediatek.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@mediatek.com>
Link: https://lore.kernel.org/r/20220708095823.12959-1-MeiChia.Chiu@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
MeiChia Chiu 2022-07-08 17:58:23 +08:00 committed by Johannes Berg
parent 3c512307de
commit 68608f9991
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/util.c
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@ -4075,7 +4075,7 @@ u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
/* n_P20 */
tmp = (150 + c->chan->center_freq - c->center_freq1) / 20;
/* n_P160 */
tmp /= 80;
tmp /= 8;
c->center_freq1 = c->center_freq1 - 80 + 160 * tmp;
c->width = NL80211_CHAN_WIDTH_160;
ret = IEEE80211_STA_DISABLE_320MHZ;