linux-kernel - Re: [PATCH v2 1/2] irqchip: loongarch-cpu: add DT support

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Date:   Fri, 2 Dec 2022 10:07:40 +0800
From:   Huacai Chen <chenhuacai@...nel.org>
To:     Liu Peibao <liupeibao@...ngson.cn>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        WANG Xuerui <kernel@...0n.name>,
        Jianmin Lv <lvjianmin@...ngson.cn>,
        Yinbo Zhu <zhuyinbo@...ngson.cn>,
        wanghongliang <wanghongliang@...ngson.cn>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] irqchip: loongarch-cpu: add DT support

Hi, Peibao and Marc,

I found this patch has merged but lkp report a problem, this can
simply fixed by add "static" before loongarch_cpu_irq_of_init
definition. Since Marc's next branch hasn't been tagged yet, can
Peibao send a new version and Marc rebase it?

Huacai

On Mon, Nov 14, 2022 at 7:38 PM Liu Peibao <liupeibao@...ngson.cn> wrote:
>
> LoongArch is coming to support booting with FDT, so DT
> support of this driver is desired.
>
> Signed-off-by: Liu Peibao <liupeibao@...ngson.cn>
> ---
>  drivers/irqchip/irq-loongarch-cpu.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
>
> diff --git a/drivers/irqchip/irq-loongarch-cpu.c b/drivers/irqchip/irq-loongarch-cpu.c
> index 741612ba6a52..a28b7c549654 100644
> --- a/drivers/irqchip/irq-loongarch-cpu.c
> +++ b/drivers/irqchip/irq-loongarch-cpu.c
> @@ -92,6 +92,25 @@ static const struct irq_domain_ops loongarch_cpu_intc_irq_domain_ops = {
>         .xlate = irq_domain_xlate_onecell,
>  };
>
> +#ifdef CONFIG_OF
> +int __init loongarch_cpu_irq_of_init(struct device_node *of_node,
> +                               struct device_node *parent)
> +{
> +       cpuintc_handle = of_node_to_fwnode(of_node);
> +
> +       irq_domain = irq_domain_create_linear(cpuintc_handle, EXCCODE_INT_NUM,
> +                               &loongarch_cpu_intc_irq_domain_ops, NULL);
> +       if (!irq_domain)
> +               panic("Failed to add irqdomain for loongarch CPU");
> +
> +       set_handle_irq(&handle_cpu_irq);
> +
> +       return 0;
> +}
> +IRQCHIP_DECLARE(cpu_intc, "loongson,cpu-interrupt-controller",
> +                                       loongarch_cpu_irq_of_init);
> +#endif
> +
>  static int __init
>  liointc_parse_madt(union acpi_subtable_headers *header,
>                        const unsigned long end)
> --
> 2.20.1
>