qcacld-3.0: Add pointer sanity check for wma layer APIs

Add some pointer sanity check before use for wma layer APIs.

Change-Id: I9712864b58731d8e8a8908ada359a907ed4fed5b
CRs-Fixed: 2642567

core/wma/src/wma_features.c

@@ -5388,8 +5388,10 @@ void wma_update_set_key(uint8_t session_id, bool pairwise,
 		return;
 	}
 	iface = &wma->interfaces[session_id];
-	if (!iface)
+	if (!iface) {
-		wma_info("iface not found for session id %d", session_id);
+		wma_err("iface not found for session id %d", session_id);
+		return;
+	}
 
 	if (cipher_type == WLAN_CRYPTO_CIPHER_AES_GMAC ||
 	    cipher_type == WLAN_CRYPTO_CIPHER_AES_GMAC_256 ||

core/wma/src/wma_main.c

@@ -7600,6 +7600,11 @@ static void wma_set_arp_req_stats(WMA_HANDLE handle,
 	vdev = wlan_objmgr_get_vdev_by_id_from_psoc(wma_handle->psoc,
 						    req_buf->vdev_id,
 						    WLAN_LEGACY_WMA_ID);
+	if (!vdev) {
+		WMA_LOGE("Can't get vdev by vdev_id:%d", req_buf->vdev_id);
+		return;
+	}
+
 	if (!wma_is_vdev_started(vdev)) {
 		WMA_LOGD("vdev id:%d is not started", req_buf->vdev_id);
 		goto release_ref;

core/wma/src/wma_mgmt.c

@@ -2387,6 +2387,10 @@ QDF_STATUS wma_set_ap_vdev_up(tp_wma_handle wma, uint8_t vdev_id)
 	iface = &wma->interfaces[vdev_id];
 	vdev = iface->vdev;
 	mlme_obj = wlan_vdev_mlme_get_cmpt_obj(vdev);
+	if (!mlme_obj) {
+		WMA_LOGE(FL("failed to get mlme_obj"));
+		return QDF_STATUS_E_INVAL;
+	}
 	mlme_obj->proto.sta.assoc_id = 0;
 
 	status = vdev_mgr_up_send(mlme_obj);