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Commit 569bda8d authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq: Always apply cpu online mask 



If the affinity had been set by the user, then a later request_irq()
will honour that setting. But online cpus can have changed. So apply
the online mask and for this case as well.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent b008207c

kernel/irq/manage.c

+6 −6
Original line number Diff line number Diff line
@@ -256,6 +256,8 @@ EXPORT_SYMBOL_GPL(irq_set_affinity_notifier); 
 */

static int setup_affinity(unsigned int irq, struct irq_desc *desc)

{

	struct cpumask *set = irq_default_affinity;



	/* Excludes PER_CPU and NO_BALANCE interrupts */

	if (!irq_can_set_affinity(irq))

		return 0;
@@ -265,15 +267,13 @@ static int setup_affinity(unsigned int irq, struct irq_desc *desc) 
	 * one of the targets is online.

	 */

	if (desc->status & (IRQ_AFFINITY_SET)) {

		if (cpumask_any_and(desc->irq_data.affinity, cpu_online_mask)

		    < nr_cpu_ids)

			goto set_affinity;

		if (cpumask_intersects(desc->irq_data.affinity,

				       cpu_online_mask))

			set = desc->irq_data.affinity;

		else

			desc->status &= ~IRQ_AFFINITY_SET;

	}



	cpumask_and(desc->irq_data.affinity, cpu_online_mask, irq_default_affinity);

set_affinity:

	cpumask_and(desc->irq_data.affinity, cpu_online_mask, set);

	desc->irq_data.chip->irq_set_affinity(&desc->irq_data, desc->irq_data.affinity, false);



	return 0;