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From: Johannes Berg <johannes@sipsolutions.net>
To: linux-wireless@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>
Subject: [PATCH] wifi: mac80211: allow CSA to same channel
Date: Mon, 29 Jan 2024 20:35:45 +0100
Message-ID: <20240129203544.ef7258d5790d.Idafe22e41621757458d4960659b9621853f7104d@changeid>
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From: Johannes Berg <johannes.berg@intel.com>

This could be used e.g. for temporarily sending quiet
(mode=1 in CSA/ECSA), or updating bandwidth. This is
also useful for testing, since it's something that an
AP may do and the client needs to be prepared. Simply
allow it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/cfg.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 8f647e28e354..c92acbf7b002 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -3874,10 +3874,6 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 	if (sdata->wdev.cac_started)
 		return -EBUSY;
 
-	if (cfg80211_chandef_identical(&chanreq.oper,
-				       &sdata->vif.bss_conf.chanreq.oper))
-		return -EINVAL;
-
 	if (chanreq.oper.punctured && !sdata->vif.bss_conf.eht_support)
 		return -EINVAL;
 
-- 
2.43.0