linux-kernel - Re: [PATCH v3 3/4] drm/bridge: Add devm_drm_bridge

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Date:   Fri, 20 May 2022 13:28:37 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Philip Chen <philipchen@...omium.org>,
        Sankeerth Billakanti <quic_sbillaka@...cinc.com>,
        Robert Foss <robert.foss@...aro.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/4] drm/bridge: Add devm_drm_bridge_add()

Hi,

On Tue, May 10, 2022 at 5:22 PM Dmitry Baryshkov
<dmitry.baryshkov@...aro.org> wrote:
>
> On Tue, 10 May 2022 at 22:30, Douglas Anderson <dianders@...omium.org> wrote:
> >
> > This adds a devm managed version of drm_bridge_add(). Like other
> > "devm" function listed in drm_bridge.h, this function takes an
> > explicit "dev" to use for the lifetime management. A few notes:
> > * In general we have a "struct device" for bridges that makes a good
> >   candidate for where the lifetime matches exactly what we want.
> > * The "bridge->dev->dev" device appears to be the encoder
> >   device. That's not the right device to use for lifetime management.
> >
> > Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> > Signed-off-by: Douglas Anderson <dianders@...omium.org>
>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

Thanks for the review! For now I'll hold off on landing this until
sometime has time to review the other patches in the series. While not
technically required, it seems weird to add the devm function without
any callers.

-Doug