linux-kernel - Re: [PATCH 2/6] irqchip: Make IRQCHIP

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Date:   Sat, 12 Sep 2020 18:20:39 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Marc Zyngier <maz@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Frank Wunderlich <linux@...web.de>,
        John Stultz <john.stultz@...aro.org>,
        Saravana Kannan <saravanak@...gle.com>,
        Hanks Chen <hanks.chen@...iatek.com>,
        Andy Gross <agross@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>, kernel-team@...roid.com
Subject: Re: [PATCH 2/6] irqchip: Make IRQCHIP_MATCH() type safe

On Sat 12 Sep 07:51 CDT 2020, Marc Zyngier wrote:

> IRQCHIP_DECLARE() is backed by macros that perform some elementary
> type checking on the probe function. Unfortunately, IRQCHIP_MATCH()
> doesn't, risking difficult debugging sessions...
> 
> Rewrite IRQCHIP_MATCH() in terms of _OF_DECLARE_ELMT() restore
> the missing type safety.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

> Signed-off-by: Marc Zyngier <maz@...nel.org>
> ---
>  include/linux/irqchip.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/irqchip.h b/include/linux/irqchip.h
> index 67351aac65ef..f8f25e9f8200 100644
> --- a/include/linux/irqchip.h
> +++ b/include/linux/irqchip.h
> @@ -33,7 +33,7 @@ extern int platform_irqchip_probe(struct platform_device *pdev);
>  #define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
>  static const struct of_device_id drv_name##_irqchip_match_table[] = {
>  
> -#define IRQCHIP_MATCH(compat, fn) { .compatible = compat, .data = fn },
> +#define IRQCHIP_MATCH(compat, fn) _OF_DECLARE_ELMT(compat, fn, of_init_fn_2)
>  
>  #define IRQCHIP_PLATFORM_DRIVER_END(drv_name)				\
>  	{},								\
> -- 
> 2.28.0
>