[PATCH] gatio: do not read if no read_handler

[Kristen Carlson Accardi <kristen@linux.intel.com>]

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If no read_handler specified, leave data alone in case someone
else wants to read it.
---
 gatchat/gatio.c   |    4 ++++
 gatchat/gsmdial.c |   12 ++++--------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/gatchat/gatio.c b/gatchat/gatio.c
index 61b0260..b4a3806 100644
--- a/gatchat/gatio.c
+++ b/gatchat/gatio.c
@@ -91,6 +91,10 @@ static gboolean received_data(GIOChannel *channel, GIOCondition cond,
 	if (cond & G_IO_NVAL)
 		return FALSE;
 
+	/* if nobody wants this data, leave it alone */
+	if (io->read_handler == NULL)
+		return TRUE;
+
 	/* Regardless of condition, try to read all the data available */
 	do {
 		toread = ring_buffer_avail_no_wrap(io->buf);
diff --git a/gatchat/gsmdial.c b/gatchat/gsmdial.c
index a531aa3..5fb406d 100644
--- a/gatchat/gsmdial.c
+++ b/gatchat/gsmdial.c
@@ -235,6 +235,8 @@ static void ppp_connect(const char *iface, const char *ip,
 static void ppp_disconnect(GAtPPPDisconnectReason reason, gpointer user_data)
 {
 	g_print("PPP Link down: %d\n", reason);
+	g_at_chat_resume(control);
+	g_at_chat_resume(modem);
 }
 
 static void connect_cb(gboolean ok, GAtResult *result, gpointer user_data)
@@ -249,14 +251,8 @@ static void connect_cb(gboolean ok, GAtResult *result, gpointer user_data)
 	/* get the data IO channel */
 	channel = g_at_chat_get_channel(modem);
 
-	/*
-	 * shutdown gatchat or else it tries to take all the input
-	 * from the modem and does not let PPP get it.
-	 */
-	g_at_chat_unref(control);
-	control = NULL;
-	g_at_chat_unref(modem);
-	modem = NULL;
+	g_at_chat_suspend(control);
+	g_at_chat_suspend(modem);
 
 	/* open ppp */
 	ppp = g_at_ppp_new(channel);
-- 
1.6.6.1