linux-kernel - Re: [PATCH V14 03/15] ACPI: irq: Allow acpi_gsi_to

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Date:   Thu, 07 Jul 2022 11:14:24 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Jianmin Lv <lvjianmin@...ngson.cn>
Cc:     Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
        Hanjun Guo <guohanjun@...wei.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Huacai Chen <chenhuacai@...ngson.cn>
Subject: Re: [PATCH V14 03/15] ACPI: irq: Allow acpi_gsi_to_irq() to have an arch-specific fallback

On Sun, 03 Jul 2022 09:45:20 +0100,
Jianmin Lv <lvjianmin@...ngson.cn> wrote:
> 
> From: Marc Zyngier <maz@...nel.org>
> 
> It appears that the generic version of acpi_gsi_to_irq() doesn't
> fallback to establishing a mapping if there is no pre-existing
> one while the x86 version does.
> 
> While arm64 seems unaffected by it, LoongArch is relying on the x86
> behaviour. In an effort to prevent new architectures from reinventing
> the proverbial wheel, provide an optional callback that the arch code
> can set to restore the x86 behaviour.
> 
> Hopefully we can eventually get rid of this in the future once
> the expected behaviour has been clarified.
> 
> Reported-by: Jianmin Lv <lvjianmin@...ngson.cn>
> Signed-off-by: Marc Zyngier <maz@...nel.org>
> Signed-off-by: Jianmin Lv <lvjianmin@...ngson.cn>

Same thing about this patch. It is your duty to collect the tags when
you repost a series.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.