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Date:   Fri, 2 Oct 2020 14:40:47 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Andy Shevchenko <andy.shevchenko@gmail.com>
Cc:     Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Jiri Slaby <jirislaby@kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Jan =?iso-8859-1?Q?Kundr=E1t?= <jan.kundrat@cesnet.cz>,
        Mark Brown <broonie@kernel.org>,
        linux-spi <linux-spi@vger.kernel.org>
Subject: Re: [PATCH] serial: max310x: rework RX interrupt handling
Message-ID: <20201002124047.GA3348062@kroah.com>
References: <20200930135137.197592-1-thomas.petazzoni@bootlin.com>
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 <20200930165037.77813365@windsurf.home>
 <CAHp75VdU5N6dBKgDudod+0cHumAreHCHgi1+xGqXtvpkiLNz0Q@mail.gmail.com>
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On Wed, Sep 30, 2020 at 05:54:15PM +0300, Andy Shevchenko wrote:
> On Wed, Sep 30, 2020 at 5:50 PM Thomas Petazzoni
> <thomas.petazzoni@bootlin.com> wrote:
> > On Wed, 30 Sep 2020 17:24:48 +0300
> > Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> 
> > > > On a Microchip SAMA5D3 platform that is receiving 20 bytes every 16ms
> > > > over one MAX310X UART, this patch has allowed to reduce the CPU
> > > > consumption of the interrupt handler thread from ~25% to 6-7%.
> > >
> > > Was it always like this?
> >
> > As far as I can see, yes. I guess you were thinking about a Fixes: tag
> > perhaps? I don't think a Fixes: tag really applies here, as we're not
> > fixing a performance regression.
> 
> Thanks for elaboration.
> 
> ...
> 
> > > > +       /* Reset FIFOs*/
> > >
> > > Add a space before the asterisk.
> >
> > Indeed. Let me know if a v2 is needed, or if this small typo can be
> > fixed when applying.
> 
> Greg usually doesn't touch commits, so v2 would be better.

Agreed, I don't like to edit things :)