From: MeiChia Chiu Date: Fri, 8 Jul 2022 09:58:23 +0000 (+0800) Subject: wifi: mac80211: fix center freq calculation in ieee80211_chandef_downgrade X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=68608f9991bdb69472b2217758018896185dd2e2;p=linux.git 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: Money Wang Signed-off-by: MeiChia Chiu Link: https://lore.kernel.org/r/20220708095823.12959-1-MeiChia.Chiu@mediatek.com Signed-off-by: Johannes Berg --- diff --git a/net/mac80211/util.c b/net/mac80211/util.c index bccc3a309ed08..bcb4aa7d7599e 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -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;