linux-kernel - Re: [PATCH v3] drm/bridge: sn65dsi86: defer if there is no dsi host

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Message-ID: <CAD=FV=Xh1OHVCdwHauebFC-OUBCXfkZkTC3V8yxARou_UfXq1Q@mail.gmail.com>
Date:   Tue, 7 Dec 2021 13:59:38 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Rob Clark <robdclark@...il.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        Maxime Ripard <maxime@...no.tech>,
        Stephen Boyd <swboyd@...omium.org>,
        Jernej Škrabec <jernej.skrabec@...il.com>,
        Rob Clark <robdclark@...omium.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] drm/bridge: sn65dsi86: defer if there is no dsi host

Hi,

On Tue, Dec 7, 2021 at 1:52 PM Rob Clark <robdclark@...il.com> wrote:
>
> From: Rob Clark <robdclark@...omium.org>
>
> Otherwise we don't get another shot at it if the bridge probes before
> the dsi host is registered.  It seems like this is what *most* (but not
> all) of the other bridges do.
>
> It looks like this was missed in the conversion to attach dsi host at
> probe time.
>
> Fixes: c3b75d4734cb ("drm/bridge: sn65dsi86: Register and attach our DSI device at probe")
> Signed-off-by: Rob Clark <robdclark@...omium.org>
> Reviewed-by: Doug Anderson <dianders@...omium.org>
> ---
> v2: Drop DRM_ERROR() in favor of drm_err_probe() and shift around the
>     spot where we report the error
> v3: Add \n and cull error msgs a bit further
>
>  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 18 +++++++-----------
>  1 file changed, 7 insertions(+), 11 deletions(-)

I can add a further:

Tested-by: Doug Anderson <dianders@...omium.org>

Since it's pretty straightforward and I don't expect it to be
controversial, I'll plan to land it tomorrow in drm-misc-next unless I
hear otherwise.

-Doug