0114-tty-jhd629-i2c-Clean-keypad-buffer-when-starting.patch

From a24340e71fd2927efbc6c1344aa277f512f65a3b Mon Sep 17 00:00:00 2001
From: Pantelis Antoniou <panto@antoniou-consulting.com>
Date: Wed, 6 Mar 2013 19:35:57 +0200
Subject: [PATCH 114/184] tty: jhd629-i2c: Clean keypad buffer when starting

Make sure we don't pick up key press from when the tty was closed.
---
 drivers/tty/jhd629-i2c.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/tty/jhd629-i2c.c b/drivers/tty/jhd629-i2c.c
index 8ce7c94..7fd4c88 100644
--- a/drivers/tty/jhd629-i2c.c
+++ b/drivers/tty/jhd629-i2c.c
@@ -516,6 +516,8 @@ static void jhd629_stop_rx(struct uart_port *port)
 
 	mutex_lock(&s->lock);
 
+	/* clear keypad buffer */
+	jhd629_send_block(s, "\x1b\x14", 2);
 	if (s->poll_timer_running) {
 		del_timer_sync(&s->poll_timer);
 		s->poll_timer_running = 0;
@@ -584,6 +586,9 @@ static int jhd629_startup(struct uart_port *port)
 
 	mutex_lock(&s->lock);
 
+	/* clear keypad buffer */
+	jhd629_send_block(s, "\x1b\x14", 2);
+
 	if (s->keypad_irq < 0 && !s->poll_timer_running) {
 		s->poll_timer.expires = jiffies +
 				msecs_to_jiffies(s->poll_period);
-- 
1.8.2.1