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

From: Sam Ravnborg
Date: Wed Jul 01 2020 - 05:02:48 EST


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