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Commit c3d7acd0 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Rafael J. Wysocki
Browse files

genirq: Distangle edge handler entry 



If the interrupt is disabled or has no action, then we should not call
the poll check. Separate the checks.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent c4df606c

kernel/irq/chip.c

+29 −10
Original line number Diff line number Diff line
@@ -540,19 +540,29 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc) 
	raw_spin_lock(&desc->lock);



	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);



	/*

	 * If we're currently running this IRQ, or its disabled,

	 * we shouldn't process the IRQ. Mark it pending, handle

	 * the necessary masking and go out

	 * If the handler is currently running, mark it pending,

	 * handle the necessary masking and go out

	 */

	if (unlikely(irqd_irq_disabled(&desc->irq_data) ||

		     irqd_irq_inprogress(&desc->irq_data) || !desc->action)) {

	if (unlikely(irqd_irq_inprogress(&desc->irq_data))) {

		if (!irq_check_poll(desc)) {

			desc->istate |= IRQS_PENDING;

			mask_ack_irq(desc);

			goto out_unlock;

		}

	}



	/*

	 * If its disabled or no action available then mask it and get

	 * out of here.

	 */

	if (irqd_irq_disabled(&desc->irq_data) || !desc->action) {

		desc->istate |= IRQS_PENDING;

		mask_ack_irq(desc);

		goto out_unlock;

	}



	kstat_incr_irqs_this_cpu(irq, desc);



	/* Start handling the irq */
@@ -601,18 +611,27 @@ void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc) 
	raw_spin_lock(&desc->lock);



	desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);



	/*

	 * If we're currently running this IRQ, or its disabled,

	 * we shouldn't process the IRQ. Mark it pending, handle

	 * the necessary masking and go out

	 * If the handler is currently running, mark it pending,

	 * handle the necessary masking and go out

	 */

	if (unlikely(irqd_irq_disabled(&desc->irq_data) ||

		     irqd_irq_inprogress(&desc->irq_data) || !desc->action)) {

	if (unlikely(irqd_irq_inprogress(&desc->irq_data))) {

		if (!irq_check_poll(desc)) {

			desc->istate |= IRQS_PENDING;

			goto out_eoi;

		}

	}



	/*

	 * If its disabled or no action available then mask it and get

	 * out of here.

	 */

	if (irqd_irq_disabled(&desc->irq_data) || !desc->action) {

		desc->istate |= IRQS_PENDING;

		goto out_eoi;

	}



	kstat_incr_irqs_this_cpu(irq, desc);



	do {