From 2d5e9bce99df8ba6a340d5c6b1c649849cd5b5dc Mon Sep 17 00:00:00 2001 From: Gao Chao Date: Tue, 24 May 2022 10:45:51 +0800 Subject: [PATCH] drm/panel: Fix build error when CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY_HELPER=m [ Upstream commit a67664860f7833015a683ea295f7c79ac2901332 ] If CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20=y && CONFIG_DRM_DISPLAY_HELPER=m, bulding fails: drivers/gpu/drm/panel/panel-samsung-atna33xc20.o: In function `atana33xc20_probe': panel-samsung-atna33xc20.c:(.text+0x744): undefined reference to `drm_panel_dp_aux_backlight' make: *** [vmlinux] Error 1 Let CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20 select DRM_DISPLAY_DP_HELPER and CONFIG_DRM_DISPLAY_HELPER to fix this error. Fixes: 32ce3b320343 ("drm/panel: atna33xc20: Introduce the Samsung ATNA33XC20 panel") Reported-by: Hulk Robot Signed-off-by: Gao Chao Reviewed-by: Douglas Anderson Signed-off-by: Douglas Anderson Link: https://patchwork.freedesktop.org/patch/msgid/20220524024551.539-1-gaochao49@huawei.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/panel/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 38799effd00a..4f1f004b3c54 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -438,6 +438,8 @@ config DRM_PANEL_SAMSUNG_ATNA33XC20 depends on OF depends on BACKLIGHT_CLASS_DEVICE depends on PM + select DRM_DISPLAY_DP_HELPER + select DRM_DISPLAY_HELPER select DRM_DP_AUX_BUS help DRM panel driver for the Samsung ATNA33XC20 panel. This panel can't