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>

1 files changed, 7 insertions, 0 deletions

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
@@ -762,6 +762,13 @@ 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.
  */