nl80211: Print a debug log entry on NL80211_CMD_PROBE_CLIENT failures

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

src/drivers/driver_nl80211.c

@@ -6924,6 +6924,7 @@ static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
 	struct i802_bss *bss = priv;
 	struct wpa_driver_nl80211_data *drv = bss->drv;
 	struct nl_msg *msg;
+	int ret;
 
 	if (!drv->poll_command_supported) {
 		nl80211_send_null_frame(bss, own_addr, addr, qos);
@@ -6936,7 +6937,12 @@ static void nl80211_poll_client(void *priv, const u8 *own_addr, const u8 *addr,
 		return;
 	}
 
-	send_and_recv_msgs(drv, msg, NULL, NULL);
+	ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+	if (ret < 0) {
+		wpa_printf(MSG_DEBUG, "nl80211: Client probe request for "
+			   MACSTR " failed: ret=%d (%s)",
+			   MAC2STR(addr), ret, strerror(-ret));
+	}
 }