linux-kernel - Re: [BISECTED REGRESSION] OMAP1 GPIO breakage

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Message-ID: <20230504144521.1b3a3574@aktux>
Date:   Thu, 4 May 2023 14:45:21 +0200
From:   Andreas Kemnade <andreas@...nade.info>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Tony Lindgren <tony@...mide.com>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        linux-omap@...r.kernel.org, linux-gpio@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [BISECTED REGRESSION] OMAP1 GPIO breakage

Hi,

On Thu, 4 May 2023 14:13:32 +0200
Linus Walleij <linus.walleij@...aro.org> wrote:

> On Thu, May 4, 2023 at 7:52 AM Tony Lindgren <tony@...mide.com> wrote:
> > * Tony Lindgren <tony@...mide.com> [230426 07:20]:  
> > > Seems that we should just revert this patch for now and try again after
> > > the issues have been fixed.  
> >
> > Looking at the proposed fixes being posted seems like they are quite
> > intrusive.. How about we partially revert this patch so omap1 still
> > uses static assigment of gpios?  
> 
> I think Andreas patch (commit 92bf78b33b0b463b00c6b0203b49aea845daecc8)
> kind of describes the problem with that: the probe order is now unpredictable,
> so if we revert the patch then that problem returns, but I don't know how
> serious that problem is.
> 
well, I think we can even fully revert 92bf78b33b0b463b00c6b0203b49aea845daecc8
after my patch

gpiolib: fix allocation of mixed dynamic/static GPIOs

is in as a short time solution. That should only leave unpredictable
numbers of multiple dynamic gpio controllers.

Regards,
Andrea