Commit 68608f99 authored by MeiChia Chiu's avatar MeiChia Chiu Committed by Johannes Berg
Browse files

wifi: mac80211: fix center freq calculation in ieee80211_chandef_downgrade 



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: default avatarMoney Wang <Money.Wang@mediatek.com>
Signed-off-by: default avatarMeiChia Chiu <MeiChia.Chiu@mediatek.com>
Link: https://lore.kernel.org/r/20220708095823.12959-1-MeiChia.Chiu@mediatek.com


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 3c512307

net/mac80211/util.c

+1 −1
Original line number Diff line number Diff line
@@ -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;