reproduce (this is a W=1 build):
        git remote add drm-tip git://anongit.freedesktop.org/drm/drm-tip
        git fetch drm-tip drm-tip
        git checkout drm-tip/drm-tip
        b4 shazam https://lore.kernel.org/r/d5f8aab89835a70c0af741e7f5765fc2c4875bf7.1695924021.git.jani.nikula@intel.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/