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Commit 7e512219 authored by Noam Camus's avatar Noam Camus Committed by Vineet Gupta
Browse files

ARC: [SMP] Fix IPI IRQ registration 



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: default avatarNoam Camus <noamc@ezchip.com>
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent a4b6cb73

arch/arc/kernel/smp.c

+13 −2
Original line number Diff line number Diff line
@@ -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

 */

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 *dev_id = &per_cpu(ipi_dev, smp_processor_id());

	return request_percpu_irq(irq, do_IPI, "IPI Interrupt", dev_id);

	if (!cpu)

		return setup_irq(irq, &arc_ipi_irq);

	else

		arch_unmask_irq(irq);



	return 0;

}