From: Jianmin Lv lvjianmin@loongson.cn
commit bdd60211eebb43ba1c4c14704965f4d4b628b931 upstream.
When support suspend/resume for loongson-eiointc, the syscore_ops is registered twice in dual-bridges machines where there are two eiointc IRQ domains. Repeated registration of an same syscore_ops broke syscore_ops_list. Also, cpuhp_setup_state_nocalls is only needed to call for once. So the patch will corret them.
Fixes: a90335c2dfb4 ("irqchip/loongson-eiointc: Add suspend/resume support") Cc: stable@vger.kernel.org Signed-off-by: Jianmin Lv lvjianmin@loongson.cn Signed-off-by: Marc Zyngier maz@kernel.org Link: https://lore.kernel.org/r/20230407083453.6305-4-lvjianmin@loongson.cn Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/irqchip/irq-loongson-eiointc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/irqchip/irq-loongson-eiointc.c +++ b/drivers/irqchip/irq-loongson-eiointc.c @@ -422,10 +422,12 @@ int __init eiointc_acpi_init(struct irq_ parent_irq = irq_create_mapping(parent, acpi_eiointc->cascade); irq_set_chained_handler_and_data(parent_irq, eiointc_irq_dispatch, priv);
- register_syscore_ops(&eiointc_syscore_ops); - cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_LOONGARCH_STARTING, + if (nr_pics == 1) { + register_syscore_ops(&eiointc_syscore_ops); + cpuhp_setup_state_nocalls(CPUHP_AP_IRQ_LOONGARCH_STARTING, "irqchip/loongarch/intc:starting", eiointc_router_init, NULL); + }
if (cpu_has_flatmode) node = cpu_to_node(acpi_eiointc->node * CORES_PER_EIO_NODE);