linux-kernel - Re: [PATCH AUTOSEL 5.4 2/5] gpio: ixp4xx: Make irqchip immutable

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Message-ID: <CAMRc=MexqLhu3ZWt1AbzBestswqmHNpct1LQiif0JGECTjHz4Q@mail.gmail.com>
Date:   Wed, 21 Sep 2022 22:04:27 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Linus Walleij <linus.walleij@...aro.org>,
        linusw@...nel.org, kaloz@...nwrt.org, khalasa@...p.pl,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.4 2/5] gpio: ixp4xx: Make irqchip immutable

On Wed, Sep 21, 2022 at 6:57 PM Marc Zyngier <maz@...nel.org> wrote:
>
> On 2022-09-21 16:54, Sasha Levin wrote:
> > From: Linus Walleij <linus.walleij@...aro.org>
> >
> > [ Upstream commit 94e9bc73d85aa6ecfe249e985ff57abe0ab35f34 ]
> >
> > This turns the IXP4xx GPIO irqchip into an immutable
> > irqchip, a bit different from the standard template due
> > to being hierarchical.
> >
> > Tested on the IXP4xx which uses drivers/ata/pata_ixp4xx_cf.c
> > for a rootfs on compact flash with IRQs from this GPIO
> > block to the CF ATA controller.
> >
> > Cc: Marc Zyngier <maz@...nel.org>
> > Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> > Acked-by: Marc Zyngier <maz@...nel.org>
> > Signed-off-by: Bartosz Golaszewski <brgl@...ev.pl>
> > Signed-off-by: Sasha Levin <sashal@...nel.org>
>
> Why? The required dependencies are only in 5,19, and are
> definitely NOT a stable candidate...
>
> This isn't a fix by any stretch of the imagination.
>

Hi Marc,

While I didn't mark it for stable (and it shouldn't go into any branch
earlier than 5.19.x), I did send the patches making the irqchips
immutable to Linus Torvalds as fixes as they technically do *fix* the
warning emitted by gpiolib and make the implementation correct.

I think these patches should still be part of the v5.19.x stable branch.

Bart