linux-kernel - Re: [PATCH v2] pinctrl: renesas: rzg2l: Fix ISEL restore on resume

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Message-ID: <CAMuHMdW6TQFZJ_r+XZOuh7yTUKwZxQRCr4Ps-xZ8U702xMd1=w@mail.gmail.com>
Date: Tue, 30 Sep 2025 12:20:57 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Claudiu Beznea <claudiu.beznea@...on.dev>
Cc: linus.walleij@...aro.org, biju.das.jz@...renesas.com, 
	linux-renesas-soc@...r.kernel.org, linux-gpio@...r.kernel.org, 
	linux-kernel@...r.kernel.org, 
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>, stable@...r.kernel.org
Subject: Re: [PATCH v2] pinctrl: renesas: rzg2l: Fix ISEL restore on resume

Hi Claudiu,

On Tue, 30 Sept 2025 at 07:33, Claudiu Beznea <claudiu.beznea@...on.dev> wrote:
> On 9/29/25 15:10, Claudiu Beznea wrote:
> >> This conflicts with commit d57183d06851bae4 ("pinctrl: renesas: rzg2l:
> >> Drop unnecessary pin configurations"), which I have already queued
> >> in renesas-drivers/renesas-pinctrl-for-v6.19.  Hence I am replacing
> >> the above hunk by:
> >>
> >>             /* Switching to GPIO is not required if reset value is
> >> same as func */
> >>             reg = readb(pctrl->base + PMC(off));
> >>     -       spin_lock_irqsave(&pctrl->lock, flags);
> >>     +       raw_spin_lock_irqsave(&pctrl->lock, flags);
> >>             pfc = readl(pctrl->base + PFC(off));
> >>             if ((reg & BIT(pin)) && (((pfc >> (pin * 4)) & PFC_MASK) == func)) {
> >>     -               spin_unlock_irqrestore(&pctrl->lock, flags);
> >>     +               raw_spin_unlock_irqrestore(&pctrl->lock, flags);
> >>                     return;
> >>             }
> >>
> >> while applying.
> > This is right. Thank you! I'm going to give it also a try (on actual HW) a
> > bit later. I'll let you know.
>
> Sorry for the delay, all looks good to me (checked on RZ/G3S).

Given this is a fix which will be backported, I will reshuffle both
commits, so your fix is first, and the above no longer applies (here).

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds