* Patch "drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP" has been added to the 5.16-stable tree
@ 2022-03-14 8:12 gregkh
0 siblings, 0 replies; only message in thread
From: gregkh @ 2022-03-14 8:12 UTC (permalink / raw)
To: airlied, daniel, dri-devel, gregkh, lkft, lyude,
maarten.lankhorst, mripard, naresh.kamboju, sam, tzimmermann
Cc: stable-commits
This is a note to let you know that I've just added the patch titled
drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-panel-select-drm_dp_helper-for-drm_panel_edp.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
From 3755d35ee1d2454b20b8a1e20d790e56201678a4 Mon Sep 17 00:00:00 2001
From: Thomas Zimmermann <tzimmermann@suse.de>
Date: Thu, 3 Feb 2022 10:39:22 +0100
Subject: drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP
From: Thomas Zimmermann <tzimmermann@suse.de>
commit 3755d35ee1d2454b20b8a1e20d790e56201678a4 upstream.
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@suse.de>
Fixes: 9d6366e743f3 ("drm: fb_helper: improve CONFIG_FB dependency")
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/dri-devel/CA+G9fYvN0NyaVkRQmA1O6rX7H8PPaZrUAD7=RDy33QY9rUU-9g@mail.gmail.com/ # [1]
Link: https://lore.kernel.org/all/20211117062704.14671-1-rdunlap@infradead.org/ # [2]
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20220203093922.20754-1-tzimmermann@suse.de
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/panel/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -95,6 +95,7 @@ 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
Patches currently in stable-queue which might be from tzimmermann@suse.de are
queue-5.16/drm-panel-select-drm_dp_helper-for-drm_panel_edp.patch
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2022-03-14 8:12 Patch "drm/panel: Select DRM_DP_HELPER for DRM_PANEL_EDP" has been added to the 5.16-stable tree gregkh
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