[Intel-gfx] ✗ Fi.CI.BUILD: failure for series starting with [01/11] drm/i915: refactor some crtc code out of intel display. (v2)

[Patchwork]

== Series Details ==

Series: series starting with [01/11] drm/i915: refactor some crtc code out of intel display. (v2)
URL   : https://patchwork.freedesktop.org/series/85846/
State : failure

== Summary ==

Applying: drm/i915: refactor some crtc code out of intel display. (v2)
Applying: drm/i915: refactor pll code out into intel_dpll.c
Applying: drm/i915: split fdi code out from intel_display.c
Applying: drm/i915: refactor ddi translations into a separate file
Applying: drm/i915: migrate hsw fdi code to new file.
Applying: drm/i915: migrate skl planes code new file (v3)
error: sha1 information is lacking or useless (drivers/gpu/drm/i915/Makefile).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0006 drm/i915: migrate skl planes code new file (v3)
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".