From: Janusz Dziedzic <janusz.dziedzic@gmail.com>
To: linux-wireless@vger.kernel.org
Cc: nbd@nbd.name, Janusz Dziedzic <janusz.dziedzic@gmail.com>
Subject: [PATCH] wifi: mt76: mt7921: don't disconnect when CSA to DFS chan
Date: Wed, 16 Jul 2025 18:54:01 +0200 [thread overview]
Message-ID: <20250716165443.28354-1-janusz.dziedzic@gmail.com> (raw)
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"
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@gmail.com>
---
drivers/net/wireless/mediatek/mt76/mt7921/main.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 40954e64c7fc..5881040ac195 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -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;
--
2.43.0
reply other threads:[~2025-07-16 16:55 UTC|newest]
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