This is a note to let you know that I've just added the patch titled nl80211: Update bss channel on channel switch for P2P_CLIENT to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: nl80211-update-bss-channel-on-channel-switch-for-p2p.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 0e92b7cb65408445a2a0c90572ff235eac8d3381 Author: Sreeramya Soratkal <quic_ssramya@xxxxxxxxxxx> Date: Tue Mar 1 11:33:20 2022 +0530 nl80211: Update bss channel on channel switch for P2P_CLIENT [ Upstream commit e50b88c4f076242358b66ddb67482b96947438f2 ] The wdev channel information is updated post channel switch only for the station mode and not for the other modes. Due to this, the P2P client still points to the old value though it moved to the new channel when the channel change is induced from the P2P GO. Update the bss channel after CSA channel switch completion for P2P client interface as well. Signed-off-by: Sreeramya Soratkal <quic_ssramya@xxxxxxxxxxx> Link: https://lore.kernel.org/r/1646114600-31479-1-git-send-email-quic_ssramya@xxxxxxxxxxx Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ab8bca39afa3..562e138deba2 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -14068,7 +14068,8 @@ void cfg80211_ch_switch_notify(struct net_device *dev, wdev->chandef = *chandef; wdev->preset_chandef = *chandef; - if (wdev->iftype == NL80211_IFTYPE_STATION && + if ((wdev->iftype == NL80211_IFTYPE_STATION || + wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && !WARN_ON(!wdev->current_bss)) wdev->current_bss->pub.channel = chandef->chan;