linux-kernel - Re: [PATCH] irqchip: fix compile-testing without CONFIG

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Date:   Fri, 22 Oct 2021 12:12:46 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Arnd Bergmann <arnd@...nel.org>,
        Saravana Kannan <saravanak@...gle.com>,
        Marc Zyngier <maz@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] irqchip: fix compile-testing without CONFIG_OF

On 10/22/21 8:49 AM, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> Drivers using the new IRQCHIP_PLATFORM_DRIVER_BEGIN helper
> fail to link when compile-testing without CONFIG_OF,
> as that means CONFIG_IRQCHIP is disabled as well:
> 
> ld.lld: error: undefined symbol: platform_irqchip_probe
>>>> referenced by irq-meson-gpio.c
>>>>               irqchip/irq-meson-gpio.o:(meson_gpio_intc_driver) in archive drivers/built-in.a
>>>> referenced by irq-mchp-eic.c
>>>>               irqchip/irq-mchp-eic.o:(mchp_eic_driver) in archive drivers/built-in.a
> 
> As the drivers are not actually used in this case, just
> making the reference to this symbol conditional helps
> avoid the link failure.
> 
> Fixes: f8410e626569 ("irqchip: Add IRQCHIP_PLATFORM_DRIVER_BEGIN/END and IRQCHIP_MATCH helper macros")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian