linux-kernel - Re: [PATCH] drm/dsi: Add _NO_ to MIPI_DSI

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Date:   Tue, 29 Jun 2021 07:44:44 +0800
From:   Nicolas Boichat <drinkcat@...omium.org>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        Robert Foss <robert.foss@...aro.org>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Emil Velikov <emil.velikov@...labora.com>,
        Inki Dae <inki.dae@...sung.com>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Jonas Karlman <jonas@...boo.se>,
        Joonyoung Shim <jy0922.shim@...sung.com>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Maxime Ripard <mripard@...nel.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Rikard Falkeborn <rikard.falkeborn@...il.com>,
        Rob Clark <robdclark@...il.com>,
        Sam Ravnborg <sam@...nborg.org>, Sean Paul <sean@...rly.run>,
        Seung-Woo Kim <sw0312.kim@...sung.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Xin Ji <xji@...logixsemi.com>,
        "open list:DRM PANEL DRIVERS" <dri-devel@...ts.freedesktop.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        MSM <linux-arm-msm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>
Subject: Re: [PATCH] drm/dsi: Add _NO_ to MIPI_DSI_* flags disabling features

On Mon, Jun 28, 2021 at 7:10 PM Linus Walleij <linus.walleij@...aro.org> wrote:
>
> On Wed, Mar 3, 2021 at 11:31 AM Nicolas Boichat <drinkcat@...omium.org> wrote:
> > On Mon, Mar 1, 2021 at 4:59 PM Linus Walleij <linus.walleij@...aro.org> wrote:
>
> > > >                 dsi->mode_flags =
> > > >                         MIPI_DSI_CLOCK_NON_CONTINUOUS |
> > > > -                       MIPI_DSI_MODE_EOT_PACKET;
> > > > +                       MIPI_DSI_MODE_NO_EOT_PACKET;
> > >
> > > Same, just delete the flag.
> > >
> > > These are all just semantic bugs due to the ambiguity of the flags, it is
> > > possible to provide a Fixes: flag for each file using this flag the wrong way
> > > but I dunno if it's worth it.
> >
> > Wow nice catch.
> >
> > I think we should fix all of those _before_ my patch is applied, with
> > proper Fixes tags so that this can be backported to stable branches,
> > even if it's a no-op. I can look into it but that may take a bit of
> > time.
>
> This is fixed now, please will you proceed with this patch, because I
> really like it!

Thanks for the ping, that fell off my radar, v2 on its way ,-)

> Yours,
> Linus Walleij