hfpmodem: hfpmodem.c make sure to use none_prefix

diff --git a/drivers/hfpmodem/handsfree.c b/drivers/hfpmodem/handsfree.c
index d5162f22d4412174cfdbe0aed2fe47726d0c4836..6e8c4d30dcf9c981bebd99dce0857690fd299654 100644 (file)
--- a/drivers/hfpmodem/handsfree.c
+++ b/drivers/hfpmodem/handsfree.c
@@ -45,6 +45,7 @@
 
 static const char *binp_prefix[] = { "+BINP:", NULL };
 static const char *bvra_prefix[] = { "+BVRA:", NULL };
+static const char *none_prefix[] = { NULL };
 
 struct hf_data {
        GAtChat *chat;
@@ -197,7 +198,7 @@ static void hfp_cnum_query(struct ofono_handsfree *hf,
        struct hf_data *hd = ofono_handsfree_get_data(hf);
        struct cb_data *cbd = cb_data_new(cb, data);
 
-       if (g_at_chat_send(hd->chat, "AT+CNUM", NULL,
+       if (g_at_chat_send(hd->chat, "AT+CNUM", none_prefix,
                                        cnum_query_cb, cbd, g_free) > 0)
                return;
 
@@ -382,8 +383,8 @@ static void hfp_disable_nrec(struct ofono_handsfree *hf,
        struct cb_data *cbd = cb_data_new(cb, data);
        const char *buf = "AT+NREC=0";
 
-       if (g_at_chat_send(hd->chat, buf, NULL, hf_generic_set_cb,
-                                                       cbd, g_free) > 0)
+       if (g_at_chat_send(hd->chat, buf, none_prefix,
+                               hf_generic_set_cb, cbd, g_free) > 0)
                return;
 
        g_free(cbd);
@@ -401,8 +402,8 @@ static void hfp_hf_indicator(struct ofono_handsfree *hf,
 
        snprintf(buf, sizeof(buf), "AT+BIEV=%u,%u", indicator, value);
 
-       if (g_at_chat_send(hd->chat, buf, NULL, hf_generic_set_cb,
-                                                       cbd, g_free) > 0)
+       if (g_at_chat_send(hd->chat, buf, none_prefix,
+                               hf_generic_set_cb, cbd, g_free) > 0)
                return;
 
        g_free(cbd);