linux-kernel - mainline: v4l2 modules missing Kconfigs

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Message-ID: <CA+G9fYuj7ADfxs+-vY3Hbx5zPceYofCLFy1WRe=-w2_v_J7tSA@mail.gmail.com>
Date:   Fri, 5 Jun 2020 15:49:07 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     Linux Media Mailing List <linux-media@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:     ": Mauro Carvalho Chehab" <mchehab+huawei@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Ulf Hansson <ulf.hansson@...aro.org>, robert.foss@...aro.org,
        stanimir.varbanov@...aro.org, lkft-triage@...ts.linaro.org
Subject: mainline: v4l2 modules missing Kconfigs

The test v4l2-compliance modprobe-vivid failed

Test error,
VIDEO_DRIVER=vivid.ko
v4l2-existence-check pass
ln: failed to create symbolic link '/lib/modules/5.7.0+/' -> '': No
such file or directory
modprobe: FATAL: Module vivid not found in directory /lib/modules/5.7.0+
modprobe-vivid fail

The investigations shows that,
the following kernel configs are missing on latest mainline builds on
x86, i386 and arm64.
These are still found on arm config.

CONFIG_VIDEOBUF2_CORE=m
CONFIG_VIDEOBUF2_V4L2=m
CONFIG_VIDEOBUF2_MEMOPS=m
CONFIG_VIDEOBUF2_DMA_CONTIG=m
CONFIG_VIDEOBUF2_VMALLOC=m
CONFIG_VIDEO_V4L2_TPG=m

Please suggest the configs required for v4l2 testing.
and any additional test coverage.

We add V4L2 config fragments like this
# Vivid driver for V4L2 tests
CONFIG_VIDEO_VIVID=m
CONFIG_MEDIA_SUPPORT=y
CONFIG_V4L_TEST_DRIVERS=y
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_VIDEO_V4L2=y
CONFIG_VIDEO_DEV=y

git branch: master
git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
GOOD:
   git commit: cb8e59cc87201af93dfbb6c3dccc8fcad72a09c2
   good config: https://builds.tuxbuild.com/600ssEELJrReeIBY_a4Ghw/kernel.config
BAD:
   git commit: 6929f71e46bdddbf1c4d67c2728648176c67c555
    bad config: https://builds.tuxbuild.com/2eAqpM2VDo7nnt8HXX2Org/kernel.config

Test ref:
https://lkft.validation.linaro.org/scheduler/job/1471386#L1310

Test results comparison,
https://qa-reports.linaro.org/lkft/linux-mainline-oe/build/v5.7-8602-g15a2bc4dbb9c/testrun/2785598/suite/v4l2-compliance/test/modprobe-vivid/history/

- Naresh