[PATCH 03/03] gpio: em: Use lazy disable and mask on suspend

[Magnus Damm <magnus.damm@gmail.com>]

From: Magnus Damm <damm@opensource.se>

Set the ->irq_enable() and ->irq_disable() methods to NULL
to enable lazy disable of interrupts. Also extend the code
to set IRQCHIP_MASK_ON_SUSPEND which tells the core that
only IRQs marked as wakeups need to stay enabled during
Suspend-to-RAM.

Tested on the KZM9D board with GPIO-keys.

Signed-off-by: Magnus Damm <damm@opensource.se>
---

 drivers/gpio/gpio-em.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- 0006/drivers/gpio/gpio-em.c
+++ work/drivers/gpio/gpio-em.c	2013-11-13 22:18:21.000000000 +0900
@@ -336,10 +336,8 @@ static int em_gio_probe(struct platform_
 	irq_chip->name = name;
 	irq_chip->irq_mask = em_gio_irq_disable;
 	irq_chip->irq_unmask = em_gio_irq_enable;
-	irq_chip->irq_enable = em_gio_irq_enable;
-	irq_chip->irq_disable = em_gio_irq_disable;
 	irq_chip->irq_set_type = em_gio_irq_set_type;
-	irq_chip->flags	= IRQCHIP_SKIP_SET_WAKE;
+	irq_chip->flags	= IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
 
 	p->irq_domain = irq_domain_add_simple(pdev->dev.of_node,
 					      pdata->number_of_pins,