✗ Fi.CI.BUILD: failure for Ultrajoiner basic functionality series (rev8)

[Patchwork]

== Series Details ==

Series: Ultrajoiner basic functionality series (rev8)
URL   : https://patchwork.freedesktop.org/series/133800/
State : failure

== Summary ==

Error: patch https://patchwork.freedesktop.org/api/1.0/series/133800/revisions/8/mbox/ not applied
Applying: drm/i915/display: Check whether platform supports joiner
Applying: drm/i915/display: Modify debugfs for joiner to force n pipes
Applying: drm/i915/display_debugfs: Allow force joiner only if supported
Applying: drm/i915/dp: Add helper to compute num pipes joined
Applying: drm/i915/display: Add debugfs support to avoid joiner
Applying: drm/i915/display: Simplify intel_joiner_num_pipes and its usage
Applying: drm/i915/display: Use joined pipes in intel_dp_joiner_needs_dsc
Applying: drm/i915/display: Use joined pipes in intel_mode_valid_max_plane_size
Applying: drm/i915/display: Use joined pipes in dsc helpers for slices, bpp
error: sha1 information is lacking or useless (drivers/gpu/drm/i915/display/intel_display.c).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0009 drm/i915/display: Use joined pipes in dsc helpers for slices, bpp
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
Build failed, no error log produced