Re: [next] arm: panel-edp.c:(.text+0xb74): undefined reference to `drm_panel_dp_aux_backlight'

From: Thomas Zimmermann <tzimmermann@suse.de>
To: Naresh Kamboju <naresh.kamboju@linaro.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	open list <linux-kernel@vger.kernel.org>,
	Linux-Next Mailing List <linux-next@vger.kernel.org>,
	lkft-triage@lists.linaro.org, dri-devel@lists.freedesktop.org,
	regressions@lists.linux.dev
Cc: Marek Vasut <marex@denx.de>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Arnd Bergmann <arnd@arndb.de>,
	Yunlong Jia <yunlong.jia@ecs.corp-partner.google.com>,
	David Airlie <airlied@linux.ie>,
	Douglas Anderson <dianders@chromium.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	Grace Mi <grace.mi@ecs.corp-partner.google.com>,
	Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [next] arm: panel-edp.c:(.text+0xb74): undefined reference to `drm_panel_dp_aux_backlight'
Date: Wed, 2 Feb 2022 10:07:30 +0100	[thread overview]
Message-ID: <76ff2848-3af4-6758-6e98-91a4c9ad26d8@suse.de> (raw)
In-Reply-To: <CA+G9fYvN0NyaVkRQmA1O6rX7H8PPaZrUAD7=RDy33QY9rUU-9g@mail.gmail.com>

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Hi

Am 02.02.22 um 10:02 schrieb Naresh Kamboju:
> Following builds failed on Linux next 20220202 arm architecture.
>    - arm-gcc-10-omap2plus_defconfig
>    - arm-clang-nightly-shmobile_defconfig
>    - arm-gcc-8-lpc32xx_defconfig
>    - arm-clang-13-shmobile_defconfig
>    - arm-gcc-10-shmobile_defconfig
>    - arm-clang-11-shmobile_defconfig
>    - arm-clang-11-omap2plus_defconfig
>    - arm-clang-13-omap2plus_defconfig
>    - arm-clang-11-lpc32xx_defconfig
>    - arm-gcc-8-omap2plus_defconfig
>    - arm-gcc-9-vexpress_defconfig
>    - arm-clang-nightly-lpc32xx_defconfig
>    - arm-gcc-9-shmobile_defconfig
>    - arm-clang-13-lpc32xx_defconfig
>    - arm-gcc-10-sama5_defconfig
>    - arm-clang-11-vexpress_defconfig
>    - arm-clang-11-sama5_defconfig
>    - arm-gcc-9-omap2plus_defconfig
>    - arm-clang-nightly-sama5_defconfig
>    - arm-clang-13-vexpress_defconfig
>    - arm-clang-nightly-vexpress_defconfig
>    - arm-gcc-9-lpc32xx_defconfig
>    - arm-clang-12-vexpress_defconfig
>    - arm-gcc-10-vexpress_defconfig
>    - arm-clang-12-shmobile_defconfig
>    - arm-gcc-11-omap2plus_defconfig
>    - arm-gcc-9-sama5_defconfig
>    - arm-gcc-8-shmobile_defconfig
>    - arm-gcc-10-lpc32xx_defconfig
>    - arm-clang-12-omap2plus_defconfig
>    - arm-gcc-8-vexpress_defconfig
>    - arm-clang-12-sama5_defconfig
>    - arm-clang-nightly-omap2plus_defconfig
>    - arm-gcc-11-lpc32xx_defconfig
>    - arm-gcc-11-sama5_defconfig
>    - arm-gcc-11-shmobile_defconfig
>    - arm-gcc-11-vexpress_defconfig
>    - arm-gcc-8-sama5_defconfig
>    - arm-clang-13-sama5_defconfig
>    - arm-clang-12-lpc32xx_defconfig
> 
> 
> make --silent --keep-going --jobs=8  ARCH=arm
> CROSS_COMPILE=arm-linux-gnueabihf- 'CC=sccache
> arm-linux-gnueabihf-gcc' 'HOSTCC=sccache gcc' vexpress_defconfig
> make --silent --keep-going --jobs=8  ARCH=arm
> CROSS_COMPILE=arm-linux-gnueabihf- 'CC=sccache
> arm-linux-gnueabihf-gcc' 'HOSTCC=sccache gcc'
> arm-linux-gnueabihf-ld: drivers/gpu/drm/panel/panel-edp.o: in function
> `panel_edp_probe':
> panel-edp.c:(.text+0xb74): undefined reference to `drm_panel_dp_aux_backlight'
> make[1]: *** [/builds/linux/Makefile:1222: vmlinux] Error 1
> 
> 
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> meta data:
> -----------
>      git describe: next-20220202
>      git_repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>      target_arch: arm
>      kconfig: vexpress_defconfig
>      toolchain: gcc-11
> 
> Build log:
> -------------
> https://builds.tuxbuild.com/24XRim72vFXix6l6MdAJNENy6je/
> 
> Steps to reproduce:
> --------------------
> # To install tuxmake on your system globally:
> # sudo pip3 install -U tuxmake
> #
> # See https://docs.tuxmake.org/ for complete documentation.
> # Original tuxmake command with fragments listed below.
> 
> tuxmake --runtime podman --target-arch arm --toolchain gcc-11
> --kconfig vexpress_defconfig
> 
> tuxmake --runtime podman --target-arch arm --toolchain gcc-11
> --kconfig https://builds.tuxbuild.com/24XRim72vFXix6l6MdAJNENy6je/config

You'll now need

   CONFIG_DRM_DP_HELPER=y

in your config.

Best regards
Thomas

> 
> 
> --
> Linaro LKFT
> https://lkft.linaro.org

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Ivo Totev

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