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Message-ID: <CAK8P3a3dYmCfyQV+iPj6KJAKpv8zYCVorDjqpeyVeAz7v7JyaQ@mail.gmail.com>
Date: Thu, 3 Feb 2022 10:20:55 +0100
From: Arnd Bergmann <arnd@...db.de>
To: Thomas Zimmermann <tzimmermann@...e.de>
Cc: Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>, Lyude Paul <lyude@...hat.com>,
Linus Walleij <linus.walleij@...aro.org>,
Doug Anderson <dianders@...omium.org>,
Ard Biesheuvel <ardb@...nel.org>,
Naresh Kamboju <naresh.kamboju@...aro.org>,
Randy Dunlap <rdunlap@...radead.org>,
Arnd Bergmann <arnd@...db.de>,
dri-devel <dri-devel@...ts.freedesktop.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>
Subject: Re: [PATCH] drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP
On Thu, Feb 3, 2022 at 10:13 AM Thomas Zimmermann <tzimmermann@...e.de> wrote:
>
> As reported in [1], DRM_PANEL_EDP depends on DRM_DP_HELPER. Select
> the option to fix the build failure. The issue has been reported
> before, when DisplayPort helpers where hidden behind the option
> CONFIG_DRM_KMS_HELPER. [2]
The two links [1] and [2] appear to be missing here, and I would also recommend
copying the build output into the changelog text for easier reference.
When linking to a bug report, best use 'Link:' tags in below.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
> Fixes: adb9d5a2cc77 ("drm/dp: Move DisplayPort helpers into separate helper module")
> Fixes: 5f04e7ce392d ("drm/panel-edp: Split eDP panels out of panel-simple")
> Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
> Cc: Thomas Zimmermann <tzimmermann@...e.de>
> Cc: Lyude Paul <lyude@...hat.com>
> Cc: Daniel Vetter <daniel@...ll.ch>
> Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
> Cc: Maxime Ripard <mripard@...nel.org>
> Cc: dri-devel@...ts.freedesktop.org
> ---
> drivers/gpu/drm/panel/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index 434c2861bb40..0aec5a10b064 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -106,6 +106,7 @@ config DRM_PANEL_EDP
> depends on PM
> select VIDEOMODE_HELPERS
> select DRM_DP_AUX_BUS
> + select DRM_DP_HELPER
> help
> DRM panel driver for dumb eDP panels that need at most a regulator and
> a GPIO to be powered up. Optionally a backlight can be attached so
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