ENGR00277955-1 keyboard: gpio_keys: support wakeup system from freeze mode

To support wakeup system from freeze mode of suspend,
device's irq can NOT be disabled during devices suspend,
so we need to add IRQF_NO_SUSPEND flag to irqflags.

Signed-off-by: Anson Huang <b20788@freescale.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index b29ca651a395..0296ca4c7647 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -3,6 +3,7 @@
  *
  * Copyright 2005 Phil Blundell
  * Copyright 2010, 2011 David Jander <david@protonic.nl>
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -472,6 +473,8 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
 
                 isr = gpio_keys_gpio_isr;
                 irqflags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
+                if (bdata->button->wakeup)
+                        irqflags |= IRQF_NO_SUSPEND;
 
         } else {
                 if (!button->irq) {