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genirq: Avoid double loop on suspend 

We can synchronize the suspended interrupts right away. No need for an
extra loop.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Thomas Gleixner 2014-08-28 22:50:43 +02:00 committed by Rafael J. Wysocki
parent 092fadd59b
commit c4df606c40
1 changed files with 7 additions and 6 deletions
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13
kernel/irq/pm.c
View File

@ -49,10 +49,10 @@ void irq_pm_remove_action(struct irq_desc *desc, struct irqaction *action)
desc->no_suspend_depth--;
}
static void suspend_device_irq(struct irq_desc *desc, int irq)
static bool suspend_device_irq(struct irq_desc *desc, int irq)
{
if (!desc->action || desc->no_suspend_depth)
return;
return false;
desc->istate |= IRQS_SUSPENDED;
__disable_irq(desc, irq);
@ -65,6 +65,7 @@ static void suspend_device_irq(struct irq_desc *desc, int irq)
*/
if (irq_desc_get_chip(desc)->flags & IRQCHIP_MASK_ON_SUSPEND)
mask_irq(desc);
return true;
}
/**
@ -86,15 +87,15 @@ void suspend_device_irqs(void)
for_each_irq_desc(irq, desc) {
unsigned long flags;
bool sync;
raw_spin_lock_irqsave(&desc->lock, flags);
suspend_device_irq(desc, irq);
sync = suspend_device_irq(desc, irq);
raw_spin_unlock_irqrestore(&desc->lock, flags);
}
for_each_irq_desc(irq, desc)
if (desc->istate & IRQS_SUSPENDED)
if (sync)
synchronize_irq(irq);
}
}
EXPORT_SYMBOL_GPL(suspend_device_irqs);