Re: [PATCH 2/6] drm: ci: Force db410c to host mode

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On Fri, 25 Aug 2023, Vignesh Raman <vignesh.raman@xxxxxxxxxxxxx> wrote:
> Force db410c to host mode to fix network issue which results in failure
> to mount root fs via NFS.
> See https://gitlab.freedesktop.org/gfx-ci/linux/-/commit/cb72a629b8c15c80a54dda510743cefd1c4b65b8
>
> Since this fix is not sent upstream, add it to build.sh script
> before building the kernel and dts. Better approach would be
> to use devicetree overlays.
>
> Signed-off-by: Vignesh Raman <vignesh.raman@xxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/ci/build.sh | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/ci/build.sh b/drivers/gpu/drm/ci/build.sh
> index 7b014287a041..c39834bd6bd7 100644
> --- a/drivers/gpu/drm/ci/build.sh
> +++ b/drivers/gpu/drm/ci/build.sh
> @@ -70,6 +70,10 @@ if [ -z "$CI_MERGE_REQUEST_PROJECT_PATH" ]; then
>      fi
>  fi
>  
> +# Force db410c to host mode to fix network issue which results in failure to mount root fs via NFS.
> +# See https://gitlab.freedesktop.org/gfx-ci/linux/-/commit/cb72a629b8c15c80a54dda510743cefd1c4b65b8
> +sed -i '/&usb {/,/status = "okay";/s/status = "okay";/&\n\tdr_mode = "host";/' arch/arm64/boot/dts/qcom/apq8016-sbc.dts
> +

It seems like a really bad idea to me to have the CI build modify the
source tree before building.

The kernel being built will have a dirty git repo, and the localversion
will have -dirty in it.

I think it would be better to do out-of-tree builds and assume the
source is read-only.

>  for opt in $ENABLE_KCONFIGS; do
>    echo CONFIG_$opt=y >> drivers/gpu/drm/ci/${KERNEL_ARCH}.config
>  done

Ditto for the config changes in the context here. Those are files in
git, don't change them.

Shouldn't this use something like 'scripts/config --enable' or
'scripts/config --disable' on the .config file to be used for building
instead?


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Graphics Center



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