Re: [PATCH 1/2] media: v4l2-ctrls: add encoder maximum bitrate control
From: kernel test robot
Date: Fri Feb 13 2026 - 13:06:14 EST
Hi Sachin,
kernel test robot noticed the following build errors:
[auto build test ERROR on c824345288d11e269ce41b36c105715bc2286050]
url: https://github.com/intel-lab-lkp/linux/commits/Sachin-Kumar-Garg/media-v4l2-ctrls-add-encoder-maximum-bitrate-control/20260213-180753
base: c824345288d11e269ce41b36c105715bc2286050
patch link: https://lore.kernel.org/r/20260213-b4-add_sc7280_mbr-v1-1-e8d95b4e4809%40oss.qualcomm.com
patch subject: [PATCH 1/2] media: v4l2-ctrls: add encoder maximum bitrate control
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
docutils: docutils (Docutils 0.21.2, Python 3.13.5, on linux)
reproduce: (https://download.01.org/0day-ci/archive/20260213/202602131921.PUY3mqyw-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202602131921.PUY3mqyw-lkp@xxxxxxxxx/
All error/warnings (new ones prefixed by >>):
The parent of level 2 sections cannot be reached. The parser is at section level 2 but the current node has only 0 parent section(s).
One reason may be a high level section used in a directive that parses its content into a base node not attached to the document
(up to Docutils 0.21, these sections were silently dropped). [docutils]
WARNING: ./net/bridge/br_private.h:267 struct member 'tunnel_hash' not described in 'net_bridge_vlan_group'
>> Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst:581: WARNING: Bullet list ends without a blank line; unexpected unindent. [docutils]
>> Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst:570: ERROR: Error parsing content block for the "flat-table" directive: two-level bullet list expected, but row 4 does not contain a second-level bullet list.
vim +570 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 561
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 562 ``V4L2_CID_MPEG_VIDEO_BITRATE_MODE``
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 563 (enum)
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 564
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 565 enum v4l2_mpeg_video_bitrate_mode -
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 566 Video bitrate mode. Possible values are:
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 567
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 568
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 569
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 @570 .. flat-table::
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 571 :header-rows: 0
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 572 :stub-columns: 0
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 573
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 574 * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_VBR``
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 575 - Variable bitrate
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 576 * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_CBR``
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 577 - Constant bitrate
4ad1b0d410c88c Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Maheshwar Ajja 2020-05-23 578 * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_CQ``
4ad1b0d410c88c Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Maheshwar Ajja 2020-05-23 579 - Constant quality
9e046466b28d68 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Sachin Kumar Garg 2026-02-13 580 * - ``V4L2_MPEG_VIDEO_BITRATE_MODE_MBR``
9e046466b28d68 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Sachin Kumar Garg 2026-02-13 @581 MBR Rate Control is a VBR Rate Control mode optimized for
9e046466b28d68 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Sachin Kumar Garg 2026-02-13 582 surveillance video contents which has high temporal correlation
9e046466b28d68 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Sachin Kumar Garg 2026-02-13 583 due to static camera positions. This Rate Control smartly identifies
9e046466b28d68 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Sachin Kumar Garg 2026-02-13 584 key-frames in the scene, and allocates more bits to them to improve
9e046466b28d68 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Sachin Kumar Garg 2026-02-13 585 the coding efficiency by taking advantage of high temporal
9e046466b28d68 Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst Sachin Kumar Garg 2026-02-13 586 correlation in surveillance videos.
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 587
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 588
4f14e3272f1ca1 Documentation/media/uapi/v4l/ext-ctrls-codec.rst Hans Verkuil 2019-02-08 589
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