From: Arnd Bergmann <arnd@xxxxxxxx> The fsl-dcu driver uses the gem_cma_helper code, but does noto enforce enabling this through Kconfig: arm-linux-gnueabi-ld: drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.o:(.rodata+0x32c): undefined reference to `drm_gem_cma_prime_import_sg_table' arm-linux-gnueabi-ld: drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.o:(.rodata+0x334): undefined reference to `drm_gem_cma_dumb_create' arm-linux-gnueabi-ld: drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_plane.o: in function `fsl_dcu_drm_plane_atomic_update': fsl_dcu_drm_plane.c:(.text+0x144): undefined reference to `drm_fb_cma_get_gem_obj' Add the same 'select' that is used in other such drivers. Fixes: 09717af7d13d ("drm: Remove CONFIG_DRM_KMS_CMA_HELPER option") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/gpu/drm/fsl-dcu/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/fsl-dcu/Kconfig b/drivers/gpu/drm/fsl-dcu/Kconfig index 2a13ea5c8539..e95e96c565ba 100644 --- a/drivers/gpu/drm/fsl-dcu/Kconfig +++ b/drivers/gpu/drm/fsl-dcu/Kconfig @@ -3,6 +3,7 @@ config DRM_FSL_DCU tristate "DRM Support for Freescale DCU" depends on DRM && OF && ARM && COMMON_CLK select BACKLIGHT_CLASS_DEVICE + select DRM_GEM_CMA_HELPER select DRM_KMS_HELPER select DRM_PANEL select REGMAP_MMIO -- 2.29.2