diff options
authorMathias Kresin <>2021-01-07 22:36:03 +0100
committerMarc Zyngier <>2021-01-10 10:20:24 +0000
commit599b3063adf4bf041a87a69244ee36aded0d878f (patch)
parentb8e594fa20d2e33d40c7a8c7c106549a35c38972 (diff)
irqchip/mips-cpu: Set IPI domain parent chip
Since commit 55567976629e ("genirq/irqdomain: Allow partial trimming of irq_data hierarchy") the irq_data chain is valided. The irq_domain_trim_hierarchy() function doesn't consider the irq + ipi domain hierarchy as valid, since the ipi domain has the irq domain set as parent, but the parent domain has no chip set. Hence the boot ends in a kernel panic. Set the chip for the parent domain as it is done in the mips gic irq driver, to have a valid irq_data chain. Fixes: 3838a547fda2 ("irqchip: mips-cpu: Introduce IPI IRQ domain support") Cc: <> # v5.10+ Signed-off-by: Mathias Kresin <> Signed-off-by: Marc Zyngier <> Link:
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-mips-cpu.c b/drivers/irqchip/irq-mips-cpu.c
index 95d4fd8f7a96..0bbb0b2d0dd5 100644
--- a/drivers/irqchip/irq-mips-cpu.c
+++ b/drivers/irqchip/irq-mips-cpu.c
@@ -197,6 +197,13 @@ static int mips_cpu_ipi_alloc(struct irq_domain *domain, unsigned int virq,
if (ret)
return ret;
+ ret = irq_domain_set_hwirq_and_chip(domain->parent, virq + i, hwirq,
+ &mips_mt_cpu_irq_controller,
+ NULL);
+ if (ret)
+ return ret;
ret = irq_set_irq_type(virq + i, IRQ_TYPE_LEVEL_HIGH);
if (ret)
return ret;