qcacmn: Add sanity check for wifi_pos priv obj in wifi_pos_main.c

Add sanity check before pointer dereferenced in wifi_pos_main.c

Change-Id: Iaea0c56f0684e2cfc959153b09468811a16ef22e
CRs-Fixed: 2370311

umac/wifi_pos/src/wifi_pos_main.c

@@ -166,6 +166,11 @@ static QDF_STATUS wifi_pos_process_set_cap_req(struct wlan_objmgr_psoc *psoc,
 	struct wifi_pos_user_defined_caps *caps =
 				(struct wifi_pos_user_defined_caps *)req->buf;
 
+	if (!wifi_pos_obj) {
+		wifi_pos_err("wifi_pos priv obj is null");
+		return QDF_STATUS_E_INVAL;
+	}
+
 	wifi_pos_debug("Received set cap req pid(%d), len(%d)",
 			req->pid, req->buf_len);
 
@@ -187,6 +192,11 @@ static QDF_STATUS wifi_pos_process_get_cap_req(struct wlan_objmgr_psoc *psoc,
 	struct wifi_pos_psoc_priv_obj *wifi_pos_obj =
 					wifi_pos_get_psoc_priv_obj(psoc);
 
+	if (!wifi_pos_obj) {
+		wifi_pos_err("wifi_pos priv obj is null");
+		return QDF_STATUS_E_INVAL;
+	}
+
 	wifi_pos_debug("Received get cap req pid(%d), len(%d)",
 			req->pid, req->buf_len);
 
@@ -284,6 +294,11 @@ static QDF_STATUS wifi_pos_process_ch_info_req(struct wlan_objmgr_psoc *psoc,
 	struct wifi_pos_psoc_priv_obj *wifi_pos_obj =
 					wifi_pos_get_psoc_priv_obj(psoc);
 
+	if (!wifi_pos_obj) {
+		wifi_pos_err("wifi_pos priv obj is null");
+		return QDF_STATUS_E_INVAL;
+	}
+
 	wifi_pos_debug("Received ch info req pid(%d), len(%d)",
 			req->pid, req->buf_len);
 
@@ -368,6 +383,11 @@ static QDF_STATUS wifi_pos_process_app_reg_req(struct wlan_objmgr_psoc *psoc,
 	struct wifi_pos_psoc_priv_obj *wifi_pos_obj =
 			wifi_pos_get_psoc_priv_obj(psoc);
 
+	if (!wifi_pos_obj) {
+		wifi_pos_err("wifi_pos priv obj is null");
+		return QDF_STATUS_E_INVAL;
+	}
+
 	wifi_pos_err("Received App Req Req pid(%d), len(%d)",
 			req->pid, req->buf_len);