From: Jiang Liu Now we already support hierarchy irq_data, so introduce several helpers to support stacked irq_chips. Signed-off-by: Jiang Liu Cc: Bjorn Helgaas Cc: Grant Likely Cc: Marc Zyngier Cc: Yingjoe Chen Cc: Yijing Wang Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 5 +++++ kernel/irq/chip.c | 17 +++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 13ba412ce3a0..0adcbbbf2e87 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -443,6 +443,11 @@ extern void handle_percpu_devid_irq(unsigned int irq, struct irq_desc *desc); extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc); extern void handle_nested_irq(unsigned int irq); +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY +extern void irq_chip_ack_parent(struct irq_data *data); +extern int irq_chip_retrigger_hierarchy(struct irq_data *data); +#endif + /* Handling of unhandled and spurious interrupts: */ extern void note_interrupt(unsigned int irq, struct irq_desc *desc, irqreturn_t action_ret); diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 72a93086216b..12f3e72449eb 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -850,3 +850,20 @@ void irq_cpu_offline(void) raw_spin_unlock_irqrestore(&desc->lock, flags); } } + +#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY +void irq_chip_ack_parent(struct irq_data *data) +{ + data = data->parent_data; + data->chip->irq_ack(data); +} + +int irq_chip_retrigger_hierarchy(struct irq_data *data) +{ + for (data = data->parent_data; data; data = data->parent_data) + if (data->chip && data->chip->irq_retrigger) + return data->chip->irq_retrigger(data); + + return -ENOSYS; +} +#endif -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/