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Commit cf465ecf authored by Max Filippov's avatar Max Filippov Committed by Greg Kroah-Hartman
Browse files

irqchip: irq-xtensa-mx: fix initial IRQ affinity 



commit a255ee29252066d621df5d6b420bf534c6ba5bc0 upstream.

When irq-xtensa-mx chip is used in non-SMP configuration its
irq_set_affinity callback is not called leaving IRQ affinity set empty.
As a result IRQ delivery does not work in that configuration.
Initialize IRQ affinity of the xtensa MX interrupt distributor to CPU 0
for all external IRQ lines.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 36bab24b

drivers/irqchip/irq-xtensa-mx.c

+14 −4
Original line number Diff line number Diff line
@@ -151,14 +151,25 @@ static struct irq_chip xtensa_mx_irq_chip = { 
	.irq_set_affinity = xtensa_mx_irq_set_affinity,

};



static void __init xtensa_mx_init_common(struct irq_domain *root_domain)

{

	unsigned int i;



	irq_set_default_host(root_domain);

	secondary_init_irq();



	/* Initialize default IRQ routing to CPU 0 */

	for (i = 0; i < XCHAL_NUM_EXTINTERRUPTS; ++i)

		set_er(1, MIROUT(i));

}



int __init xtensa_mx_init_legacy(struct device_node *interrupt_parent)

{

	struct irq_domain *root_domain =

		irq_domain_add_legacy(NULL, NR_IRQS - 1, 1, 0,

				&xtensa_mx_irq_domain_ops,

				&xtensa_mx_irq_chip);

	irq_set_default_host(root_domain);

	secondary_init_irq();

	xtensa_mx_init_common(root_domain);

	return 0;

}
@@ -168,8 +179,7 @@ static int __init xtensa_mx_init(struct device_node *np, 
	struct irq_domain *root_domain =

		irq_domain_add_linear(np, NR_IRQS, &xtensa_mx_irq_domain_ops,

				&xtensa_mx_irq_chip);

	irq_set_default_host(root_domain);

	secondary_init_irq();

	xtensa_mx_init_common(root_domain);

	return 0;

}

IRQCHIP_DECLARE(xtensa_mx_irq_chip, "cdns,xtensa-mx", xtensa_mx_init);