linux-kernel - Re: Linux 6.6.6

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Date:   Mon, 11 Dec 2023 10:44:41 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
        torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc:     lwn@....net, jslaby@...e.cz,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: Linux 6.6.6

diff --git a/Makefile b/Makefile
index ee4e504a3e78..1eefa893f048 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 6
-SUBLEVEL = 5
+SUBLEVEL = 6
 EXTRAVERSION =
 NAME = Hurr durr I'ma ninja sloth
 
diff --git a/net/wireless/core.h b/net/wireless/core.h
index f0a3a2317638..e536c0b615a0 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -299,7 +299,6 @@ struct cfg80211_cqm_config {
 	u32 rssi_hyst;
 	s32 last_rssi_event_value;
 	enum nl80211_cqm_rssi_threshold_event last_rssi_event_type;
-	bool use_range_api;
 	int n_rssi_thresholds;
 	s32 rssi_thresholds[] __counted_by(n_rssi_thresholds);
 };
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 6a82dd876f27..931a03f4549c 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -12824,6 +12824,10 @@ static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
 	int i, n, low_index;
 	int err;
 
+	/* RSSI reporting disabled? */
+	if (!cqm_config)
+		return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
+
 	/*
 	 * Obtain current RSSI value if possible, if not and no RSSI threshold
 	 * event has been received yet, we should receive an event after a
@@ -12898,6 +12902,18 @@ static int nl80211_set_cqm_rssi(struct genl_info *info,
 	    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
 		return -EOPNOTSUPP;
 
+	if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
+		if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
+			return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
+
+		return rdev_set_cqm_rssi_config(rdev, dev,
+						thresholds[0], hysteresis);
+	}
+
+	if (!wiphy_ext_feature_isset(&rdev->wiphy,
+				     NL80211_EXT_FEATURE_CQM_RSSI_LIST))
+		return -EOPNOTSUPP;
+
 	if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
 		n_thresholds = 0;
 
@@ -12905,20 +12921,6 @@ static int nl80211_set_cqm_rssi(struct genl_info *info,
 	old = rcu_dereference_protected(wdev->cqm_config,
 					lockdep_is_held(&wdev->mtx));
 
-	/* if already disabled just succeed */
-	if (!n_thresholds && !old)
-		return 0;
-
-	if (n_thresholds > 1) {
-		if (!wiphy_ext_feature_isset(&rdev->wiphy,
-					     NL80211_EXT_FEATURE_CQM_RSSI_LIST) ||
-		    !rdev->ops->set_cqm_rssi_range_config)
-			return -EOPNOTSUPP;
-	} else {
-		if (!rdev->ops->set_cqm_rssi_config)
-			return -EOPNOTSUPP;
-	}
-
 	if (n_thresholds) {
 		cqm_config = kzalloc(struct_size(cqm_config, rssi_thresholds,
 						 n_thresholds),
@@ -12933,26 +12935,13 @@ static int nl80211_set_cqm_rssi(struct genl_info *info,
 		memcpy(cqm_config->rssi_thresholds, thresholds,
 		       flex_array_size(cqm_config, rssi_thresholds,
 				       n_thresholds));
-		cqm_config->use_range_api = n_thresholds > 1 ||
-					    !rdev->ops->set_cqm_rssi_config;
 
 		rcu_assign_pointer(wdev->cqm_config, cqm_config);
-
-		if (cqm_config->use_range_api)
-			err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
-		else
-			err = rdev_set_cqm_rssi_config(rdev, dev,
-						       thresholds[0],
-						       hysteresis);
 	} else {
 		RCU_INIT_POINTER(wdev->cqm_config, NULL);
-		/* if enabled as range also disable via range */
-		if (old->use_range_api)
-			err = rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
-		else
-			err = rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
 	}
 
+	err = cfg80211_cqm_rssi_update(rdev, dev, cqm_config);
 	if (err) {
 		rcu_assign_pointer(wdev->cqm_config, old);
 		kfree_rcu(cqm_config, rcu_head);
@@ -19142,11 +19131,10 @@ void cfg80211_cqm_rssi_notify_work(struct wiphy *wiphy, struct wiphy_work *work)
 	wdev_lock(wdev);
 	cqm_config = rcu_dereference_protected(wdev->cqm_config,
 					       lockdep_is_held(&wdev->mtx));
-	if (!cqm_config)
+	if (!wdev->cqm_config)
 		goto unlock;
 
-	if (cqm_config->use_range_api)
-		cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
+	cfg80211_cqm_rssi_update(rdev, wdev->netdev, cqm_config);
 
 	rssi_level = cqm_config->last_rssi_event_value;
 	rssi_event = cqm_config->last_rssi_event_type;