When DRM_RCAR_DU=y and DRM_RCAR_LVDS=m, there are several build errors as reported by 'kernel test robot'. These can be corrected by changing "imply" to "select".
In looking at this, the same problem (build errors) happens when DRM_RCAR_DU=y and DRM_RCAR_CMM=m, so again change the "imply" to "select" here as well.
These 2 changes fix the following 8 build/link errors:
aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_crtc_atomic_enable': rcar_du_crtc.c:(.text+0x1be8): undefined reference to `rcar_lvds_clk_enable' aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_crtc_atomic_disable': rcar_du_crtc.c:(.text+0x2438): undefined reference to `rcar_lvds_clk_disable' aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_drv.o: in function `rcar_du_init': rcar_du_drv.c:(.init.text+0x14): undefined reference to `rcar_du_of_init' aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_encoder.o: in function `rcar_du_encoder_init': rcar_du_encoder.c:(.text+0x1d4): undefined reference to `rcar_lvds_dual_link'
aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_cmm_setup': rcar_du_crtc.c:(.text+0x380): undefined reference to `rcar_cmm_setup' aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_crtc_atomic_enable': rcar_du_crtc.c:(.text+0x1c08): undefined reference to `rcar_cmm_enable' aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_crtc_atomic_disable': rcar_du_crtc.c:(.text+0x231c): undefined reference to `rcar_cmm_disable' aarch64-linux-ld: drivers/gpu/drm/rcar-du/rcar_du_kms.o: in function `rcar_du_modeset_init': rcar_du_kms.c:(.text+0xd08): undefined reference to `rcar_cmm_init'
Fixes: e08e934d6c28 ("drm: rcar-du: Add support for CMM") Fixes: 02f2b30032c1 ("drm: rcar-du: lvds: Add API to enable/disable clock output") Signed-off-by: Randy Dunlap rdunlap@infradead.org Reported-by: kernel test robot lkp@intel.com Cc: Masahiro Yamada masahiroy@kernel.org Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Kieran Bingham kieran.bingham+renesas@ideasonboard.com Cc: dri-devel@lists.freedesktop.org Cc: linux-renesas-soc@vger.kernel.org Cc: Jacopo Mondi jacopo+renesas@jmondi.org --- drivers/gpu/drm/rcar-du/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- linux-next-20210420.orig/drivers/gpu/drm/rcar-du/Kconfig +++ linux-next-20210420/drivers/gpu/drm/rcar-du/Kconfig @@ -4,8 +4,8 @@ config DRM_RCAR_DU depends on DRM && OF depends on ARM || ARM64 depends on ARCH_RENESAS || COMPILE_TEST - imply DRM_RCAR_CMM - imply DRM_RCAR_LVDS + select DRM_RCAR_CMM + select DRM_RCAR_LVDS select DRM_KMS_HELPER select DRM_KMS_CMA_HELPER select DRM_GEM_CMA_HELPER