linux-kernel - Re: [REGRESSION][BISECTED] 5.15-rc1: Broken AHCI on NVIDIA ION (MCP79)

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Message-ID: <CALjTZvZZf25tqoQWM_HsBb84JgKpMKAxqfhUdpD_e5M-Bc_yzA@mail.gmail.com>
Date:   Thu, 7 Oct 2021 14:11:51 +0100
From:   Rui Salvaterra <rsalvaterra@...il.com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     tglx@...utronix.de, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION][BISECTED] 5.15-rc1: Broken AHCI on NVIDIA ION (MCP79)

Hi again, Marc,

On Thu, 7 Oct 2021 at 13:15, Marc Zyngier <maz@...nel.org> wrote:
>
> 'Believe' is not a word I'd use. I know for a fact that all HW,
> whether it is present, past or future is only a pile of hacks.
>
> Given that your report tends to indicate that we fail to enable the
> interrupt for this device, this would be a possibility.

Heh. Guess what? The AHCI controller is lying throught its teeth. Your
hack fixes boot for me. Everything seems to be working, even with such
a big hammer.

Thanks,
Rui