Re: FAILED: patch "[PATCH] drm: Select DRM_KMS_HELPER from" failed to apply to 6.6-stable tree

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Mon, May 05, 2025 at 10:33:49AM +0200, Janne Grunau wrote:
> Hej,
> 
> On Mon, May 5, 2025, at 09:53, gregkh@linuxfoundation.org wrote:
> > The patch below does not apply to the 6.6-stable tree. If someone
> > wants it applied there, or to any other stable or longterm tree, then
> > please email the backport, including the original git commit id to
> > <stable@vger.kernel.org>.
> >
> > To reproduce the conflict and resubmit, you may use the following
> > commands:
> >
> > git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
> > git checkout FETCH_HEAD
> > git cherry-pick -x 32dce6b1949a696dc7abddc04de8cbe35c260217
> 
> This works for me without conflicts. Are there git configs which might
> influence this? The only noticeable thing is that the position of the
> DRM_DEBUG_DP_MST_TOPOLOGY_REFS entry shifted 82 lines down. I looked
> at the history of drivers/gpu/drm/Kconfig and the config
> DRM_DEBUG_DP_MST_TOPOLOGY_REFS block hasn't changed since v5.10. So I
> would expect the cherry-pick to work.

It applies cleanly, but breaks the build badly.  Try it and see :)

> Having said all that I don't know how important it is to have this in
> older stable releases when nobody noticed it before. The issue presents
> itself only with out-of-tree rust DRM drivers. I don't expect that
> anyone will try to backport those to old stable releases.
> 
> I'm fine with skipping this commit for stable releases for 6.6 and older
> and won't post backports.

Ok, thanks!

greg k-h