qtnfmac: do not cache CSA chandef info

It is never used for anything useful, and all logic is handled by
either WiFi card or higher layers.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/quantenna/qtnfmac/cfg80211.c

@@ -809,7 +809,6 @@ out:
 static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 			       struct cfg80211_csa_settings *params)
 {
-	struct qtnf_wmac *mac = wiphy_priv(wiphy);
 	struct qtnf_vif *vif = qtnf_netdev_get_priv(dev);
 	int ret;
 
@@ -830,17 +829,6 @@ static int qtnf_channel_switch(struct wiphy *wiphy, struct net_device *dev,
 		return -EOPNOTSUPP;
 	}
 
-	if (vif->vifid != 0) {
-		if (!(mac->status & QTNF_MAC_CSA_ACTIVE))
-			return -EOPNOTSUPP;
-
-		if (!cfg80211_chandef_identical(&params->chandef,
-						&mac->csa_chandef))
-			return -EINVAL;
-
-		return 0;
-	}
-
 	if (!cfg80211_chandef_valid(&params->chandef)) {
 		pr_err("%s: invalid channel\n", dev->name);
 		return -EINVAL;

drivers/net/wireless/quantenna/qtnfmac/commands.c

@@ -2337,8 +2337,6 @@ int qtnf_cmd_send_chan_switch(struct qtnf_vif *vif,
 
 	switch (res_code) {
 	case QLINK_CMD_RESULT_OK:
-		memcpy(&mac->csa_chandef, &params->chandef,
-		       sizeof(mac->csa_chandef));
 		mac->status |= QTNF_MAC_CSA_ACTIVE;
 		ret = 0;
 		break;

drivers/net/wireless/quantenna/qtnfmac/core.h

@@ -147,7 +147,6 @@ struct qtnf_wmac {
 	struct qtnf_vif iflist[QTNF_MAX_INTF];
 	struct cfg80211_scan_request *scan_req;
 	struct cfg80211_chan_def chandef;
-	struct cfg80211_chan_def csa_chandef;
 	struct mutex mac_lock;	/* lock during wmac speicific ops */
 	struct timer_list scan_timeout;
 };

drivers/net/wireless/quantenna/qtnfmac/event.c

@@ -381,13 +381,7 @@ qtnf_event_handle_freq_change(struct qtnf_wmac *mac,
 		 mac->macid, chandef.chan->hw_value, chandef.center_freq1,
 		 chandef.center_freq2, chandef.width);
 
-	if (mac->status & QTNF_MAC_CSA_ACTIVE) {
-		mac->status &= ~QTNF_MAC_CSA_ACTIVE;
-		if (chandef.chan->hw_value != mac->csa_chandef.chan->hw_value)
-			pr_warn("unexpected switch to %u during CSA to %u\n",
-				chandef.chan->hw_value,
-				mac->csa_chandef.chan->hw_value);
-	}
+	mac->status &= ~QTNF_MAC_CSA_ACTIVE;
 
 	memcpy(&mac->chandef, &chandef, sizeof(mac->chandef));