queue-6.1/wifi-mac80211-update-radar_required-in-channel-conte.patch

From 01eedc021fe36d9723fe7eb6dee730e2f0460af5 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Sun, 8 Jun 2025 19:33:24 +0530
Subject: wifi: mac80211: update radar_required in channel context after
 channel switch

From: Ramya Gnanasekar <ramya.gnanasekar@oss.qualcomm.com>

[ Upstream commit 140c6a61d83cbd85adba769b5ef8d61acfa5b392 ]

Currently, when a non-DFS channel is brought up and the bandwidth is
expanded from 80 MHz to 160 MHz, where the primary 80 MHz is non-DFS
and the secondary 80 MHz consists of DFS channels, radar detection
fails if radar occurs in the secondary 80 MHz.

When the channel is switched from 80 MHz to 160 MHz, with the primary
80 MHz being non-DFS and the secondary 80 MHz consisting of DFS
channels, the radar required flag in the channel switch parameters
is set to true. However, when using a reserved channel context,
it is not updated in sdata, which disables radar detection in the
secondary 80 MHz DFS channels.

Update the radar required flag in sdata to fix this issue when using
a reserved channel context.

Signed-off-by: Ramya Gnanasekar <ramya.gnanasekar@oss.qualcomm.com>
Signed-off-by: Ramasamy Kaliappan <ramasamy.kaliappan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250608140324.1687117-1-ramasamy.kaliappan@oss.qualcomm.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mac80211/chan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index f07e34bed8f3..648af67b8ec8 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -1308,6 +1308,7 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link)
 		goto out;
 	}
 
+	link->radar_required = link->reserved_radar_required;
 	list_move(&link->assigned_chanctx_list, &new_ctx->assigned_links);
 	rcu_assign_pointer(link_conf->chanctx_conf, &new_ctx->conf);
 
-- 
2.39.5