From: Ramya Gnanasekar Date: Sun, 8 Jun 2025 14:03:24 +0000 (+0530) Subject: wifi: mac80211: update radar_required in channel context after channel switch X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=140c6a61d83cbd85adba769b5ef8d61acfa5b392;p=thirdparty%2Flinux.git wifi: mac80211: update radar_required in channel context after channel switch 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 Signed-off-by: Ramasamy Kaliappan Link: https://patch.msgid.link/20250608140324.1687117-1-ramasamy.kaliappan@oss.qualcomm.com Signed-off-by: Johannes Berg --- diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 94c83f58e23d0..d62f91656a195 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -1405,6 +1405,7 @@ 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);