qcacld-3.0: Ignore Radar event for non-dfs SAP

For SAP (2.4G) + SAP (5g dfs chan), the radar event
will be posted to all vdevs. 2.4 SAP will run into
failure in random chan selection.
Fix by ignoring radar event for Non dfs channel SAP.

Change-Id: I739f2a84f17941e501dfe52c9cd12afc6a42425f
CRs-Fixed: 2294077

core/sap/src/sap_api_link_cntl.c

@@ -784,6 +784,7 @@ wlansap_roam_callback(void *ctx, struct csr_roam_info *csr_roam_info,
 	tpAniSirGlobal mac_ctx = NULL;
 	uint8_t intf;
 	bool sta_sap_scc_on_dfs_chan;
+	enum channel_state chan_state;
 
 	if (QDF_IS_STATUS_ERROR(wlansap_context_get(ctx)))
 		return QDF_STATUS_E_FAILURE;
@@ -883,8 +884,9 @@ wlansap_roam_callback(void *ctx, struct csr_roam_info *csr_roam_info,
 		break;
 
 	case eCSR_ROAM_DFS_RADAR_IND:
-		QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_INFO_HIGH,
-			  FL("Received Radar Indication"));
+		QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_DEBUG,
+			  "Received Radar Indication on sap ch %d, session %d",
+			  sap_ctx->channel, sap_ctx->sessionId);
 
 		if (sta_sap_scc_on_dfs_chan) {
 			QDF_TRACE(QDF_MODULE_ID_SAP,
@@ -900,6 +902,16 @@ wlansap_roam_callback(void *ctx, struct csr_roam_info *csr_roam_info,
 				  sap_ctx->fsm_state);
 			break;
 		}
+
+		chan_state = wlan_reg_get_channel_state(
+				mac_ctx->pdev, sap_ctx->channel);
+		if (chan_state != CHANNEL_STATE_DFS)  {
+			QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_DEBUG,
+				  "Ignore Radar event for sap ch %d state %d",
+				  sap_ctx->channel, chan_state);
+			return 0;
+		}
+
 		if (sap_ctx->is_pre_cac_on) {
 			QDF_TRACE(QDF_MODULE_ID_SAP, QDF_TRACE_LEVEL_INFO_MED,
 				FL("sapdfs: Radar detect on pre cac:%d"),