The DisplayPort helpers rely on some (__drm_atomic_helper_private_obj_duplicate_state, drm_kms_helper_hotplug_event) helpers found in files compiled by DRM_KMS_HELPER.
Prior to commit d674858ff979 ("drm/display: Make all helpers visible and switch to depends on"), DRM_DISPLAY_DP_HELPER was only selectable so it wasn't really a big deal. However, since that commit, it's now something that can be enabled as is, and since there's no expressed dependency with DRM_KMS_HELPER, it can break too. Since DRM_KMS_HELPER is a selectable option for now, let's select it for DRM_DISPLAY_DP_HELPER. Reported-by: kernel test robot <l...@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202404021556.0jvcnc13-...@intel.com/ Closes: https://lore.kernel.org/oe-kbuild-all/202404021700.lbyyzgfd-...@intel.com/ Fixes: d674858ff979 ("drm/display: Make all helpers visible and switch to depends on") Signed-off-by: Maxime Ripard <mrip...@kernel.org> --- drivers/gpu/drm/display/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kconfig index 01f2a231aa5f..a38962a556c2 100644 --- a/drivers/gpu/drm/display/Kconfig +++ b/drivers/gpu/drm/display/Kconfig @@ -37,10 +37,11 @@ config DRM_DISPLAY_DP_AUX_CHARDEV channel. config DRM_DISPLAY_DP_HELPER bool "DRM DisplayPort Helpers" depends on DRM_DISPLAY_HELPER + select DRM_KMS_HELPER default y help DRM display helpers for DisplayPort. config DRM_DISPLAY_DP_TUNNEL -- 2.44.0