linux-kernel - Re: [PATCH 03/12] irqchip/stm32-exti: Map interrupts through interrupt nexus node

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Date: Mon, 19 Feb 2024 15:22:34 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Antonio Borneo <antonio.borneo@...s.st.com>, Rob Herring
 <robh+dt@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>, Alexandre
 Torgue <alexandre.torgue@...s.st.com>, Catalin Marinas
 <catalin.marinas@....com>, Will Deacon <will@...nel.org>
Cc: Antonio Borneo <antonio.borneo@...s.st.com>,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
 linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 03/12] irqchip/stm32-exti: Map interrupts through
 interrupt nexus node

On Fri, Feb 16 2024 at 10:47, Antonio Borneo wrote:
> diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-exti.c
> index 69982f21126a..95bb3dd10b2c 100644
> --- a/drivers/irqchip/irq-stm32-exti.c
> +++ b/drivers/irqchip/irq-stm32-exti.c
> @@ -61,6 +61,7 @@ struct stm32_exti_host_data {
>  	struct stm32_exti_chip_data *chips_data;
>  	const struct stm32_exti_drv_data *drv_data;
>  	struct hwspinlock *hwlock;
> +	struct device_node *irq_map_node;

Please keep variable declarations ordered in reverse fir tree layout:

https://www.kernel.org/doc/html/latest/process/maintainer-tip.html#variable-declarations

>  };
>  
>  static struct stm32_exti_host_data *stm32_host_data;
> @@ -713,8 +714,9 @@ static int stm32_exti_h_domain_alloc(struct irq_domain *dm,
>  	u8 desc_irq;
>  	struct irq_fwspec *fwspec = data;
>  	struct irq_fwspec p_fwspec;
> +	struct of_phandle_args out_irq;

Please move this into the condition path where it is actually used.

>  	irq_hw_number_t hwirq;
> -	int bank;
> +	int bank, ret;
>  	u32 event_trg;
>  	struct irq_chip *chip;
>  
> @@ -731,6 +733,25 @@ static int stm32_exti_h_domain_alloc(struct irq_domain *dm,
>  
>  	irq_domain_set_hwirq_and_chip(dm, virq, hwirq, chip, chip_data);
>  
> +	if (host_data->irq_map_node) {
> +		out_irq.np = host_data->irq_map_node;

Thanks,

        tglx