[PATCH] irqchip/apple-aic: Correctly map the vgic maintenance interrupt

From: Marc Zyngier
Date: Wed Feb 01 2023 - 11:41:20 EST


We currently allocate the vgic maintenance interrupt by calling into
the low-level irqdomain code. Not only this is unnecessary, but this
is also pretty wrong: we end-up skipping a bunch of irqdesc state
setup

A simple "cat /proc/interrupt" shows how wrong we are, as the
interrupt appears as "Edge" instead of "Level".

Instead, just call the standard irq_create_fwspec_mapping(), which
is the right tool for the job. Duh.

Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---

Notes:
This applies to Oliver's kvm-arm64/apple-vgic-mi branch.

drivers/irqchip/irq-apple-aic.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index 09fd52d91e45..76ee7c5e7b7e 100644
--- a/drivers/irqchip/irq-apple-aic.c
+++ b/drivers/irqchip/irq-apple-aic.c
@@ -1201,9 +1201,7 @@ static int __init aic_of_ic_init(struct device_node *node, struct device_node *p
},
};

- vgic_info.maint_irq = irq_domain_alloc_irqs(irqc->hw_domain,
- 1, NUMA_NO_NODE,
- &mi);
+ vgic_info.maint_irq = irq_create_fwspec_mapping(&mi);
WARN_ON(!vgic_info.maint_irq);
}

--
2.34.1