extmod/moduos_dupterm: Dumpterm subsystem is responsible for closing stream.

Make dupterm subsystem close a term stream object when EOF or error occurs.
There's no other party than dupterm itself in a better position to do this,
and this is required to properly reclaim stream resources, especially if
multiple dupterm sessions may be established (e.g. as networking
connections).

1 files changed, 2 insertions, 5 deletions

diff --git a/esp8266/esp_mphal.c b/esp8266/esp_mphal.c
index 25f1a9322f..ec5da7d3d0 100644
--- a/esp8266/esp_mphal.c
+++ b/esp8266/esp_mphal.c
@@ -171,16 +171,13 @@ static int call_dupterm_read(void) {
         mp_buffer_info_t bufinfo;
         mp_get_buffer_raise(res, &bufinfo, MP_BUFFER_READ);
         if (bufinfo.len == 0) {
-            MP_STATE_PORT(term_obj) = NULL;
-            mp_printf(&mp_plat_print, "dupterm: EOF received, deactivating\n");
+            mp_uos_deactivate("dupterm: EOF received, deactivating\n", MP_OBJ_NULL);
             return -1;
         }
         nlr_pop();
         return *(byte*)bufinfo.buf;
     } else {
-        MP_STATE_PORT(term_obj) = NULL;
-        mp_printf(&mp_plat_print, "dupterm: Exception in read() method, deactivating: ");
-        mp_obj_print_exception(&mp_plat_print, nlr.ret_val);
+        mp_uos_deactivate("dupterm: Exception in read() method, deactivating: ", nlr.ret_val);
     }
 
     return -1;