irqchip/loongson-eiointc: Fix irq affinity setting during resume

[ Upstream commit fb07b8f83441febeb0daf199b5f18c6de9bbab03 ]

The hierarchy of PCH PIC, PCH PCI MSI and EIONTC is as following:

        PCH PIC ------->|
                        |---->EIOINTC
        PCH PCI MSI --->|

so the irq_data list of irq_desc for IRQs on PCH PIC and PCH PCI MSI
is like this:

irq_desc->irq_data(domain: PCH PIC)->parent_data(domain: EIOINTC)
irq_desc->irq_data(domain: PCH PCI MSI)->parent_data(domain: EIOINTC)

In eiointc_resume(), the irq_data passed into eiointc_set_irq_affinity()
should be matched to EIOINTC domain instead of PCH PIC or PCH PCI MSI
domain, so fix it.

Fixes: a90335c2dfb4 ("irqchip/loongson-eiointc: Add suspend/resume support")
Reported-by: yangqiming <yangqiming@loongson.cn>
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230614115936.5950-6-lvjianmin@loongson.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index 90181c42840b4e92a8b7a8a59d3da5280532ada3..873a326ed6cbc9e8915fdab81422f8e581fb51bc 100644 (file)
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -317,7 +317,7 @@ static void eiointc_resume(void)
                        desc = irq_resolve_mapping(eiointc_priv[i]->eiointc_domain, j);
                        if (desc && desc->handle_irq && desc->handle_irq != handle_bad_irq) {
                                raw_spin_lock(&desc->lock);
-                               irq_data = &desc->irq_data;
+                               irq_data = irq_domain_get_irq_data(eiointc_priv[i]->eiointc_domain, irq_desc_get_irq(desc));
                                eiointc_set_irq_affinity(irq_data, irq_data->common->affinity, 0);
                                raw_spin_unlock(&desc->lock);
                        }