* [PATCH] mac80211: fix a center frequency recalculation issue in ieee80211_chandef_downgrade
@ 2022-07-08 9:58 MeiChia Chiu
0 siblings, 0 replies; only message in thread
From: MeiChia Chiu @ 2022-07-08 9:58 UTC (permalink / raw)
To: Johannes Berg
Cc: Felix Fietkau, Money Wang, Ryder Lee, Shayne Chen, Evelyn Tsai,
linux-wireless, linux-mediatek, MeiChia Chiu, MeiChia Chiu
From: MeiChia Chiu <meichia.chiu@mediatek.com>
When mac80211 downgrades working bandwidth,
the cent_freq and cent_freq1 need to be recalculated.
There is a typo in the case of downgrading bandwidth from
320M to 160M which would cause a wrong frequency value.
Reviewed-by: Money Wang <Money.Wang@mediatek.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@mediatek.com>
---
net/mac80211/util.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index bccc3a309ed0..bcb4aa7d7599 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;
--
2.36.1
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