[hverkuil-media-tree:hdcp 1/4] htmldocs: Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-status (if the link has no caption the label must precede a section header)

[kernel test robot]

tree:   git://linuxtv.org/hverkuil/media_tree.git hdcp
head:   da521c491aa5d01b7a920ef66c8d9aef36f14a02
commit: 53bddd8330386202cfeae0ebf555e2a6b95ddafe [1/4] HDCP api designed
reproduce: make htmldocs

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-status (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-stage1done (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-stage2done (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hpcp-err (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-badbksv (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-pimismatch (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-pjmismatch (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-io (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-reptimeout (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-maxcascade (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-shamismatch (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2-event-hdcp-err-maxdev (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2_g_hdcp_tx_data (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2_s_hdcp_rx_data (if the link has no caption the label must precede a section header)
>> Documentation/output/videodev2.h.rst:6: WARNING: undefined label: v4l2_g_hdcp_rx_data (if the link has no caption the label must precede a section header)

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