linux-kernel - Re: [PATCH] [Re-PATCH] arch: arm: mach-pxa: Add missing of_node

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Message-ID: <aa7254a0-c7ce-3092-2da6-020ffef80142@conchuod.ie>
Date:   Wed, 15 Jun 2022 11:42:16 +0100
From:   Conor Dooley <mail@...chuod.ie>
To:     heliang <windhl@....com>, daniel@...que.org,
        haojian.zhuang@...il.com, robert.jarzmik@...e.fr,
        linux@...linux.org.uk
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [Re-PATCH] arch: arm: mach-pxa: Add missing of_node_put
 in irq.c


On 15/06/2022 11:33, heliang wrote:
> [PATCH] [Re-PATCH] arch: arm: mach-pxa: Add missing of_node_put in irq.c

You mean [PATCH v2]? Pass -v N arg to format-patch & it'll do it
for you.

> In pxa_dt_irq_init(), of_find_matching_node() will return a node
> pointer with refcount incremented. We should use of_node_put in
> fail path or when it is not used anymore. This goto-label patch
> style is advised by Daniel.
> 
> Signed-off-by: heliang <windhl@....com>

On all these patches, is "heliang" your (full) real name?
See:
https://www.kernel.org/doc/html/latest/process/submitting-patches.html#developer-s-certificate-of-origin-1-1

> ---

It's helpful to put a changelog here too for what changed since v1

>   arch/arm/mach-pxa/irq.c | 9 ++++++---
>   1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
> index 96f33ef1d9ea..338356b9f37c 100644
> --- a/arch/arm/mach-pxa/irq.c
> +++ b/arch/arm/mach-pxa/irq.c
> @@ -247,13 +247,13 @@ void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int))
>   				   &pxa_internal_irq_nr);
>   	if (ret) {
>   		pr_err("Not found marvell,intc-nr-irqs property\n");
> -		return;
> +		goto out_put;
>   	}
>   
>   	ret = of_address_to_resource(node, 0, &res);
>   	if (ret < 0) {
>   		pr_err("No registers defined for node\n");
> -		return;
> +		goto out_put;
>   	}
>   	pxa_irq_base = io_p2v(res.start);
>   
> @@ -263,9 +263,12 @@ void __init pxa_dt_irq_init(int (*fn)(struct irq_data *, unsigned int))
>   	ret = irq_alloc_descs(-1, 0, pxa_internal_irq_nr, 0);
>   	if (ret < 0) {
>   		pr_err("Failed to allocate IRQ numbers\n");
> -		return;
> +		goto out_put;
>   	}
>   
>   	pxa_init_irq_common(node, pxa_internal_irq_nr, fn);
> +	
> +out_put:
> +	of_node_put(node);	
>   }
>   #endif /* CONFIG_OF */