linux-kernel - Re: [PATCH v5 01/14] irqchip: Provide platform_device to of_irq_init_cb

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Message-ID: <87a6j4c6d5.wl-maz@kernel.org>
Date:   Wed, 20 Oct 2021 11:56:06 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com (maintainer:BROADCOM
        BCM281XX/BCM11XXX/BCM216XX ARM ARCHITE...),
        Russell King <linux@...linux.org.uk>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM
        SUB-ARCHITECTURES), linux-mips@...r.kernel.org (open list:MIPS),
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE)
Subject: Re: [PATCH v5 01/14] irqchip: Provide platform_device to of_irq_init_cb_t

AOn Tue, 19 Oct 2021 22:58:42 +0100,
Florian Fainelli <f.fainelli@...il.com> wrote:
> 
> Provide the platform device mapping to the interrupt controller node to
> the of_irq_init_cb_t callback such that drivers can make use of it.
> 
> Reviewed-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
> ---
>  drivers/irqchip/irqchip.c  | 2 +-
>  drivers/irqchip/qcom-pdc.c | 3 ++-
>  drivers/of/irq.c           | 2 +-
>  include/linux/of_irq.h     | 5 ++++-
>  4 files changed, 8 insertions(+), 4 deletions(-)
>

[...]

> diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
> index aaf219bd0354..89acc8b089f0 100644
> --- a/include/linux/of_irq.h
> +++ b/include/linux/of_irq.h
> @@ -9,7 +9,10 @@
>  #include <linux/ioport.h>
>  #include <linux/of.h>
>  
> -typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
> +struct platform_device;
> +
> +typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *,
> +				struct platform_device *);
>  
>  /*
>   * Workarounds only applied to 32bit powermac machines

As pointed out in my reply to your v4 [1], this does break all users
of IRQCHIP_DECLARE(). You can see that by applying [2].

	M.

[1] https://lore.kernel.org/r/87tuhcnlwt.wl-maz@kernel.org
[2] https://lore.kernel.org/r/20211020104527.3066268-1-maz@kernel.org

-- 
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