When I build for an old imx53 platform I see the same as the test robot saw before:
arm-buildroot-linux-gnueabihf-ld: drivers/gpu/drm/imx/ipuv3/parallel-display.o: in function `imx_pd_bind': parallel-display.c:(.text+0xb8): undefined reference to `drm_bridge_connector_init' Selecting DRM_DISPLAY_HELPER for DRM_IMX_PARALLEL_DISPLAY fixes the build. Reported-by: kernel test robot <[email protected]> Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ Signed-off-by: Martin Kepplinger-Novakovic <[email protected]> --- drivers/gpu/drm/imx/ipuv3/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/imx/ipuv3/Kconfig b/drivers/gpu/drm/imx/ipuv3/Kconfig index acaf250890019..b2240998df4f1 100644 --- a/drivers/gpu/drm/imx/ipuv3/Kconfig +++ b/drivers/gpu/drm/imx/ipuv3/Kconfig @@ -15,6 +15,7 @@ config DRM_IMX_PARALLEL_DISPLAY depends on DRM_IMX select DRM_BRIDGE select DRM_BRIDGE_CONNECTOR + select DRM_DISPLAY_HELPER select DRM_IMX_LEGACY_BRIDGE select DRM_PANEL_BRIDGE select VIDEOMODE_HELPERS -- 2.47.3
