[kbuild-all] [chrome-os:chromeos-4.4 33/214] htmldocs: Error: no ID for constraint linkend: "V4L2-PIX-FMT-BGRA32".

tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.4 head: 165087594d83615eb48f64ee09830ccccd7f4ae4 commit: d54d59884d971d897f89e1762b1ed1194de1785a [33/214] BACKPORT: media: v4l: Add definitions for missing 32-bit RGB formats reproduce: make htmldocs If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): Error: no ID for constraint linkend: "V4L2-PIX-FMT-BGRA32". Error: no ID for constraint linkend: "V4L2-PIX-FMT-BGRX32". Error: no ID for constraint linkend: "V4L2-PIX-FMT-RGBA32". Error: no ID for constraint linkend: "V4L2-PIX-FMT-RGBX32". --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org