linux-kernel - Re: [PATCH V2 2/2] drivers: input: keyboard

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Message-ID: <CAHp75VcELo3f5VYqGbgjgBzOZOj360+EPmRF5Oh3VqBAF8TeHw@mail.gmail.com>
Date:   Fri, 10 Jan 2020 09:35:30 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     fengping yu <fengping.yu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
        Olof Johansson <olof@...om.net>,
        Aisheng Dong <aisheng.dong@....com>,
        Anson Huang <Anson.Huang@....com>,
        Maxime Ripard <mripard@...nel.org>,
        Leonard Crestez <leonard.crestez@....com>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Marcin Juszkiewicz <marcin.juszkiewicz@...aro.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Thierry Reding <treding@...dia.com>,
        YueHaibing <yuehaibing@...wei.com>,
        Stefan Agner <stefan@...er.cn>, Jacky Bai <ping.bai@....com>,
        Marco Felsch <m.felsch@...gutronix.de>,
        linux-input <linux-input@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        wsd_upstream@...iatek.com
Subject: Re: [PATCH V2 2/2] drivers: input: keyboard

On Fri, Jan 10, 2020 at 3:34 AM Dmitry Torokhov
<dmitry.torokhov@...il.com> wrote:
> On Wed, Jan 08, 2020 at 02:29:23PM +0800, fengping yu wrote:
> > From: "fengping.yu" <fengping.yu@...iatek.com>

...

> > +static void kpd_get_keymap_state(void __iomem *kp_base, u16 state[])
> > +{
> > +     state[0] = readw(kp_base + KP_MEM1);
> > +     state[1] = readw(kp_base + KP_MEM2);
> > +     state[2] = readw(kp_base + KP_MEM3);
> > +     state[3] = readw(kp_base + KP_MEM4);
> > +     state[4] = readw(kp_base + KP_MEM5);
>
> Please use memcpy_formio() here.

Actually it's not an equivalent and may have side effects.
I already told somewhere that we lack of
mem*_*io{32,16,8}() implementation.

-- 
With Best Regards,
Andy Shevchenko