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Commit c4df606c authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Rafael J. Wysocki
Browse files

genirq: Avoid double loop on suspend 



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

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 092fadd5

kernel/irq/pm.c

+7 −6
Original line number Diff line number Diff line
@@ -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;

}



/**
@@ -86,16 +87,16 @@ 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);



static void resume_irq(struct irq_desc *desc, int irq)