Re: [PATCH v2] drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP

From: Geert Uytterhoeven
Date: Tue Feb 08 2022 - 06:24:07 EST


Hi Thomas,

On Mon, Feb 7, 2022 at 12:31 PM Thomas Zimmermann <tzimmermann@xxxxxxx> wrote:
> As reported in [1], DRM_PANEL_EDP depends on DRM_DP_HELPER. Select
> the option to fix the build failure. The error message is shown
> below.
>
> 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
>
> The issue has been reported before, when DisplayPort helpers were
> hidden behind the option CONFIG_DRM_KMS_HELPER. [2]
>
> v2:
> * fix and expand commit description (Arnd)
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>

Thanks for your patch!

This fixes the build errors I'm seeing, so
Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds