[PATCH][UPSTEAM] powerpc/mpic: add irq_set_wake support

[Wang Dongsheng]

Add irq_set_wake support. Just add IRQF_NO_SUSPEND to desc->action->flag.
So the wake up interrupt will not be disable in suspend_device_irqs.

Signed-off-by: Wang Dongsheng <dongsheng.w...@freescale.com>
---
 arch/powerpc/sysdev/mpic.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 9c6e535..2ed0220 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -920,6 +920,18 @@ int mpic_set_irq_type(struct irq_data *d, unsigned int 
flow_type)
        return IRQ_SET_MASK_OK_NOCOPY;
 }

+static int mpic_irq_set_wake(struct irq_data *d, unsigned int on)
+{
+       struct irq_desc *desc = container_of(d, struct irq_desc, irq_data);
+
+       if (on)
+               desc->action->flags |= IRQF_NO_SUSPEND;
+       else
+               desc->action->flags &= ~IRQF_NO_SUSPEND;
+
+       return 0;
+}
+
 void mpic_set_vector(unsigned int virq, unsigned int vector)
 {
        struct mpic *mpic = mpic_from_irq(virq);
@@ -957,6 +969,7 @@ static struct irq_chip mpic_irq_chip = {
        .irq_unmask     = mpic_unmask_irq,
        .irq_eoi        = mpic_end_irq,
        .irq_set_type   = mpic_set_irq_type,
+       .irq_set_wake   = mpic_irq_set_wake,
 };

 #ifdef CONFIG_SMP
@@ -971,6 +984,7 @@ static struct irq_chip mpic_tm_chip = {
        .irq_mask       = mpic_mask_tm,
        .irq_unmask     = mpic_unmask_tm,
        .irq_eoi        = mpic_end_irq,
+       .irq_set_wake   = mpic_irq_set_wake,
 };

 #ifdef CONFIG_MPIC_U3_HT_IRQS
@@ -981,6 +995,7 @@ static struct irq_chip mpic_irq_ht_chip = {
        .irq_unmask     = mpic_unmask_ht_irq,
        .irq_eoi        = mpic_end_ht_irq,
        .irq_set_type   = mpic_set_irq_type,
+       .irq_set_wake   = mpic_irq_set_wake,
 };
 #endif /* CONFIG_MPIC_U3_HT_IRQS */

--
1.7.5.1


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