linux-kernel - Re: [RFT PATCH v3 21/27] tty: serial: samsung

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Message-ID: <CAHp75Vd_kwdjbus3iq_39+p_xRk3rum2ek3nLLFbBDzMwggnKA@mail.gmail.com>
Date:   Fri, 5 Mar 2021 18:20:10 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Hector Martin <marcan@...can.st>
Cc:     linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Marc Zyngier <maz@...nel.org>, Rob Herring <robh@...nel.org>,
        Arnd Bergmann <arnd@...nel.org>,
        Olof Johansson <olof@...om.net>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Mark Kettenis <mark.kettenis@...all.nl>,
        Tony Lindgren <tony@...mide.com>,
        Mohamed Mediouni <mohamed.mediouni@...amail.com>,
        Stan Skowronek <stan@...ellium.com>,
        Alexander Graf <graf@...zon.com>,
        Will Deacon <will@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Christoph Hellwig <hch@...radead.org>,
        "David S. Miller" <davem@...emloft.net>,
        devicetree <devicetree@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        Linux Documentation List <linux-doc@...r.kernel.org>,
        Linux Samsung SOC <linux-samsung-soc@...r.kernel.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFT PATCH v3 21/27] tty: serial: samsung_tty: IRQ rework

On Fri, Mar 5, 2021 at 6:16 PM Hector Martin <marcan@...can.st> wrote:
>
> On 06/03/2021 00.17, Andy Shevchenko wrote:
> > Add a separate change that removes flags from the spin lock in the IRQ handler.
>
> This commit should have no functional changes;

Exactly my point why I'm suggesting to have _separate_ change!

> I am just splitting an
> existing function into two, where one takes the lock and the other does
> the work. Do you mean using a different locking function? I'm not
> entirely sure what you're suggesting.

Yes, as a prerequisite

spin_lock_irqsave -> spin_lock().

-- 
With Best Regards,
Andy Shevchenko