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Commit 08b55e2a authored by Marc Zyngier's avatar Marc Zyngier Committed by Jason Cooper
Browse files

genirq: Add irqchip_set_wake_parent 



This proves to be useful with stacked domains, when the current
domain doesn't implement wake-up, but expect the parent to do so.

Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1426088629-15377-2-git-send-email-marc.zyngier@arm.com


Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent c517d838

include/linux/irq.h

+1 −0
Original line number Diff line number Diff line
@@ -460,6 +460,7 @@ extern void irq_chip_eoi_parent(struct irq_data *data); 
extern int irq_chip_set_affinity_parent(struct irq_data *data,

					const struct cpumask *dest,

					bool force);

extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on);

#endif



/* Handling of unhandled and spurious interrupts: */

kernel/irq/chip.c

+16 −0
Original line number Diff line number Diff line
@@ -948,6 +948,22 @@ int irq_chip_retrigger_hierarchy(struct irq_data *data) 


	return -ENOSYS;

}



/**

 * irq_chip_set_wake_parent - Set/reset wake-up on the parent interrupt

 * @data:	Pointer to interrupt specific data

 * @on:		Whether to set or reset the wake-up capability of this irq

 *

 * Conditional, as the underlying parent chip might not implement it.

 */

int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on)

{

	data = data->parent_data;

	if (data->chip->irq_set_wake)

		return data->chip->irq_set_wake(data, on);



	return -ENOSYS;

}

#endif



/**