[Intel-gfx] ✗ Ro.CI.BAT: failure for drm: Refactor drop/set master code a bit

[Patchwork]

== Series Details ==

Series: drm: Refactor drop/set master code a bit
URL   : https://patchwork.freedesktop.org/series/8993/
State : failure

== Summary ==

Applying: drm: Refactor drop/set master code a bit
fatal: sha1 information is lacking or useless (include/drm/drmP.h).
error: could not build fake ancestor
Patch failed at 0001 drm: Refactor drop/set master code a bit
The copy of the patch that failed is found in: .git/rebase-apply/patch
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".