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Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull irq fixes from Ingo Molnar:
 "A core irq affinity masks related fix and a MIPS irqchip driver fix"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/mips-gic: Don't overrun pcpu_masks array
  genirq: Dont allow affinity mask to be updated on IPIs
This commit is contained in:
Linus Torvalds 2016-04-23 11:34:39 -07:00
commit 16ecb41410
2 changed files with 3 additions and 2 deletions
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4
drivers/irqchip/irq-mips-gic.c
View File

@ -467,7 +467,7 @@ static int gic_set_affinity(struct irq_data *d, const struct cpumask *cpumask,
gic_map_to_vpe(irq, mips_cm_vp_id(cpumask_first(&tmp)));
/* Update the pcpu_masks */
for (i = 0; i < gic_vpes; i++)
for (i = 0; i < min(gic_vpes, NR_CPUS); i++)
clear_bit(irq, pcpu_masks[i].pcpu_mask);
set_bit(irq, pcpu_masks[cpumask_first(&tmp)].pcpu_mask);
@ -707,7 +707,7 @@ static int gic_shared_irq_domain_map(struct irq_domain *d, unsigned int virq,
spin_lock_irqsave(&gic_lock, flags);
gic_map_to_pin(intr, gic_cpu_pin);
gic_map_to_vpe(intr, vpe);
for (i = 0; i < gic_vpes; i++)
for (i = 0; i < min(gic_vpes, NR_CPUS); i++)
clear_bit(intr, pcpu_masks[i].pcpu_mask);
set_bit(intr, pcpu_masks[vpe].pcpu_mask);
spin_unlock_irqrestore(&gic_lock, flags);

1
kernel/irq/ipi.c
View File

@ -94,6 +94,7 @@ unsigned int irq_reserve_ipi(struct irq_domain *domain,
data = irq_get_irq_data(virq + i);
cpumask_copy(data->common->affinity, dest);
data->common->ipi_offset = offset;
irq_set_status_flags(virq + i, IRQ_NO_BALANCING);
}
return virq;