Huawei modem closes the modem port after PPP disconnect. So the channel of gatchat is NULL in ppp_disconnect. In such case, we resume the chat and it causes huawei_disconnect() get called and the gprs context is removed later. Before removing this gprs context, we should reply the pending DBus message to the client. --- drivers/atmodem/gprs-context.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/atmodem/gprs-context.c b/drivers/atmodem/gprs-context.c index fea80b0..6589560 100644 --- a/drivers/atmodem/gprs-context.c +++ b/drivers/atmodem/gprs-context.c @@ -93,7 +93,6 @@ static void ppp_disconnect(GAtPPPDisconnectReason reason, gpointer user_data) g_at_ppp_unref(gcd->ppp); gcd->ppp = NULL; - g_at_chat_resume(gcd->chat); switch (gcd->state) { case STATE_ENABLING: @@ -110,6 +109,12 @@ static void ppp_disconnect(GAtPPPDisconnectReason reason, gpointer user_data) gcd->active_context = 0; gcd->state = STATE_IDLE; + /* + * If the channel of gcd->chat is NULL, it might cause + * gprs_context_remove get called and the gprs context will be + * removed. + */ + g_at_chat_resume(gcd->chat); } static gboolean setup_ppp(struct ofono_gprs_context *gc) @@ -257,7 +262,7 @@ static void at_gprs_context_remove(struct ofono_gprs_context *gc) DBG(""); - if (gcd->state != STATE_IDLE) { + if (gcd->state != STATE_IDLE && gcd->ppp) { g_at_ppp_unref(gcd->ppp); g_at_chat_resume(gcd->chat); } -- 1.7.0.4