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wifi: mt76: mt7921: don't disconnect when CSA to DFS chan

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When station mode, don't disconnect when we get
channel switch from AP to DFS channel. Most APs
send CSA request after pass background CAC. In other
case we should disconnect after detect beacon miss.

Without patch when we get CSA to DFS channel get:
"kernel: wlo1: preparing for channel switch failed, disconnecting"

Fixes: 8aa2f59260 ("wifi: mt76: mt7921: introduce CSA support")
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@gmail.com>
Link: https://patch.msgid.link/20250716165443.28354-1-janusz.dziedzic@gmail.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Janusz Dziedzic 2025-07-16 18:54:01 +02:00 committed by Felix Fietkau
parent 87b07a1fbc
commit 87f38519d2
1 changed files with 1 additions and 4 deletions
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5
drivers/net/wireless/mediatek/mt76/mt7921/main.c
View File

@ -1459,11 +1459,8 @@ static int mt7921_pre_channel_switch(struct ieee80211_hw *hw,
if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc)
return -EOPNOTSUPP;
/* Avoid beacon loss due to the CAC(Channel Availability Check) time
* of the AP.
*/
if (!cfg80211_chandef_usable(hw->wiphy, &chsw->chandef,
IEEE80211_CHAN_RADAR))
IEEE80211_CHAN_DISABLED))
return -EOPNOTSUPP;
return 0;