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ARC: [SMP] Fix IPI IRQ registration

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Handle it just like timer. Current request_percpu_irq() would fail on
non-boot cpus and thus IRQ will remian unmasked on those cpus.

[vgupta: fix changelong]
Signed-off-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Noam Camus 2013-02-28 11:07:06 +02:00 • committed by Vineet Gupta
parent a4b6cb735b
commit 7e5122190b
1 changed files with 13 additions and 2 deletions
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15
arch/arc/kernel/smp.c
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@ -337,8 +337,19 @@ irqreturn_t do_IPI(int irq, void *dev_id)
* API called by platform code to hookup arch-common ISR to their IPI IRQ * API called by platform code to hookup arch-common ISR to their IPI IRQ
*/ */
static DEFINE_PER_CPU(int, ipi_dev); static DEFINE_PER_CPU(int, ipi_dev);
static struct irqaction arc_ipi_irq = {
.name = "IPI Interrupt",
.flags = IRQF_PERCPU,
.handler = do_IPI,
};
int smp_ipi_irq_setup(int cpu, int irq) int smp_ipi_irq_setup(int cpu, int irq)
{ {
int *dev_id = &per_cpu(ipi_dev, smp_processor_id()); if (!cpu)
return request_percpu_irq(irq, do_IPI, "IPI Interrupt", dev_id); return setup_irq(irq, &arc_ipi_irq);
else
arch_unmask_irq(irq);
return 0;
} }