From: Dmitry Torokhov <dtor@insightbb.com>
Date: Thu, 12 Apr 2007 05:32:09 +0000 (-0400)
Subject: Input: i8042 - disable interfaces when switching to legacy mode
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8d04ddb64c7bf62aec1102fddc5336a68bcaebe9;p=deliverable%2Flinux.git

Input: i8042 - disable interfaces when switching to legacy mode

Disable both keyboard and auxiliary interfaces before switching
to legacy mode to prevent atkbd from getting "empty" interrupts.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
---

diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index ec195a36e8f6..ff40b5cbbf3f 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -761,6 +761,13 @@ static void i8042_controller_reset(void)
 {
 	i8042_flush();
 
+/*
+ * Disable both KBD and AUX interfaces so they don't get in the way
+ */
+
+	i8042_ctr |= I8042_CTR_KBDDIS | I8042_CTR_AUXDIS;
+	i8042_ctr &= ~(I8042_CTR_KBDINT | I8042_CTR_AUXINT);
+
 /*
  * Disable MUX mode if present.
  */