linux-kernel - Re: [PATCH v10 0/2] Silence missing-graph error for DRM bridges

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Date:   Wed, 1 Jul 2020 11:02:40 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v10 0/2] Silence missing-graph error for DRM bridges

Hi Dmitry
On Wed, Jul 01, 2020 at 10:42:30AM +0300, Dmitry Osipenko wrote:
> Hi!
> 
> This small series improves DRM bridges code by silencing a noisy error
> coming from of-graph code for the device-trees that are missing a
> display bridge graph.
> 
>   graph: no port node found in ...
> 
> One example where this error happens is an older bridge-less DTB used
> in conjunction with a newer kernel which has a display controller driver
> that supports DRM bridges.
> 
> Changelog:
> 
> v10:- Corrected doc-comment, unbroke the of_graph_get_next_endpoint() and
>       improved commit's message in the "add of_graph_is_present()" patch.
>       Thanks to Laurent Pinchart for spotting the problems!
> 
> v9: - These two patches are factored out from [1] in order to ease applying
>       of the patches.
> 
>     - The of_graph_presents() is renamed to of_graph_is_present() like it
>       was requested by Rob Herring in the review comment to [1].
> 
>     - Added Rob's r-b.
> 
>     [1] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=184102
> 
> Dmitry Osipenko (2):
>   of_graph: add of_graph_is_present()
>   drm/of: Make drm_of_find_panel_or_bridge() to check graph's presence

Thanks for your patience with these - applied to drm-misc-next now.

	Sam

> 
>  drivers/gpu/drm/drm_of.c |  9 +++++++++
>  drivers/of/property.c    | 23 +++++++++++++++++++++++
>  include/linux/of_graph.h |  6 ++++++
>  3 files changed, 38 insertions(+)
> 
> -- 
> 2.26.0