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References: <20230929053915.1530607-1-claudiu.beznea@bp.renesas.com> <20230929053915.1530607-7-claudiu.beznea@bp.renesas.com>
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From:   Geert Uytterhoeven <geert@linux-m68k.org>
Date:   Wed, 4 Oct 2023 10:11:13 +0200
Message-ID: <CAMuHMdUgVfxWrVP51b3nbeDThedjzWGJb95-oU5bdPeTTjWu8Q@mail.gmail.com>
Subject: Re: [PATCH v2 06/28] clk: renesas: rzg2l: remove critical area
To:     Claudiu <claudiu.beznea@tuxon.dev>
Cc:     mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
        linus.walleij@linaro.org, gregkh@linuxfoundation.org,
        jirislaby@kernel.org, magnus.damm@gmail.com,
        catalin.marinas@arm.com, will@kernel.org,
        quic_bjorande@quicinc.com, konrad.dybcio@linaro.org, arnd@arndb.de,
        neil.armstrong@linaro.org, prabhakar.mahadev-lad.rj@bp.renesas.com,
        biju.das.jz@bp.renesas.com, linux-renesas-soc@vger.kernel.org,
        linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
        linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org
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On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> spinlock in rzg2l_mod_clock_endisable() is intended to protect the accesses
> to hardware register. There is no need to protect the instructions that set
> temporary variable which will be then written to register. With this only
> one write to one clock register is executed thus locking/unlocking rmw_lock
> is removed.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - removed also the spinlock
> - s/reduce/remove in patch title

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-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