tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d2f38a3c6507b2520101f9a3807ed98f1bdc545a commit: 0dee6f70fd40e3375d45d3f93abdf6a57fc0e549 drm: rcar-du: Don't create encoder for unconnected LVDS outputs date: 4 weeks ago config: arm-randconfig-c002-20211025 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 0dee6f70fd40e3375d45d3f93abdf6a57fc0e549 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_resume_worker': drm_fb_helper.c:(.text+0x44e): undefined reference to `fb_set_suspend' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_fini': drm_fb_helper.c:(.text+0x534): undefined reference to `fb_dealloc_cmap' arm-linux-gnueabi-ld: drm_fb_helper.c:(.text+0x53a): undefined reference to `framebuffer_release' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_set_suspend_unlocked': drm_fb_helper.c:(.text+0x642): undefined reference to `fb_set_suspend' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_alloc_fbi': drm_fb_helper.c:(.text+0xfca): undefined reference to `framebuffer_alloc' arm-linux-gnueabi-ld: drm_fb_helper.c:(.text+0xfde): undefined reference to `fb_alloc_cmap' arm-linux-gnueabi-ld: drm_fb_helper.c:(.text+0xffc): undefined reference to `fb_dealloc_cmap' arm-linux-gnueabi-ld: drm_fb_helper.c:(.text+0x101a): undefined reference to `framebuffer_release' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_generic_probe': drm_fb_helper.c:(.text+0x10cc): undefined reference to `fb_deferred_io_init' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `__drm_fb_helper_initial_config_and_unlock': drm_fb_helper.c:(.text+0x11a2): undefined reference to `register_framebuffer' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_write': drm_fb_helper.c:(.text+0x1946): undefined reference to `fb_sys_write' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_fillrect': drm_fb_helper.c:(.text+0x1988): undefined reference to `sys_fillrect' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_copyarea': drm_fb_helper.c:(.text+0x19c8): undefined reference to `sys_copyarea' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_imageblit': drm_fb_helper.c:(.text+0x1a08): undefined reference to `sys_imageblit' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_cfb_fillrect': drm_fb_helper.c:(.text+0x1a48): undefined reference to `cfb_fillrect' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_cfb_copyarea': drm_fb_helper.c:(.text+0x1a88): undefined reference to `cfb_copyarea' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_cfb_imageblit': drm_fb_helper.c:(.text+0x1ac8): undefined reference to `cfb_imageblit' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_fb_copyarea': drm_fb_helper.c:(.text+0x1b10): undefined reference to `cfb_copyarea' arm-linux-gnueabi-ld: drm_fb_helper.c:(.text+0x1b18): undefined reference to `sys_copyarea' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_fb_fillrect': drm_fb_helper.c:(.text+0x1b50): undefined reference to `cfb_fillrect' arm-linux-gnueabi-ld: drm_fb_helper.c:(.text+0x1b58): undefined reference to `sys_fillrect' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_fb_imageblit': drm_fb_helper.c:(.text+0x1b90): undefined reference to `cfb_imageblit' arm-linux-gnueabi-ld: drm_fb_helper.c:(.text+0x1b98): undefined reference to `sys_imageblit' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_cleanup': drm_fb_helper.c:(.text+0x1bdc): undefined reference to `fb_deferred_io_cleanup' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_set_suspend': drm_fb_helper.c:(.text+0x406): undefined reference to `fb_set_suspend' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_unregister_fbi': drm_fb_helper.c:(.text+0x4c6): undefined reference to `unregister_framebuffer' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fb_helper_sys_read': drm_fb_helper.c:(.text+0x5c0): undefined reference to `fb_sys_read' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_fb_helper.o: in function `drm_fbdev_client_unregister': drm_fb_helper.c:(.text+0x1c50): undefined reference to `unregister_framebuffer' arm-linux-gnueabi-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_crtc_atomic_begin': rcar_du_crtc.c:(.text+0xcc6): undefined reference to `rcar_cmm_setup' arm-linux-gnueabi-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_crtc_atomic_enable': rcar_du_crtc.c:(.text+0xd14): undefined reference to `rcar_cmm_enable' arm-linux-gnueabi-ld: rcar_du_crtc.c:(.text+0xd4c): undefined reference to `rcar_lvds_clk_enable' arm-linux-gnueabi-ld: rcar_du_crtc.c:(.text+0xd9c): undefined reference to `rcar_cmm_setup' arm-linux-gnueabi-ld: drivers/gpu/drm/rcar-du/rcar_du_crtc.o: in function `rcar_du_crtc_atomic_disable': rcar_du_crtc.c:(.text+0x1050): undefined reference to `rcar_cmm_disable' arm-linux-gnueabi-ld: rcar_du_crtc.c:(.text+0x10d4): undefined reference to `rcar_lvds_clk_disable' arm-linux-gnueabi-ld: drivers/gpu/drm/rcar-du/rcar_du_drv.o: in function `rcar_du_init': rcar_du_drv.c:(.init.text+0x4): undefined reference to `rcar_du_of_init' arm-linux-gnueabi-ld: drivers/gpu/drm/rcar-du/rcar_du_encoder.o: in function `rcar_du_encoder_init': rcar_du_encoder.c:(.text+0xb8): undefined reference to `rcar_lvds_dual_link' arm-linux-gnueabi-ld: drivers/gpu/drm/rcar-du/rcar_du_kms.o: in function `rcar_du_modeset_init': rcar_du_kms.c:(.text+0x552): undefined reference to `rcar_cmm_init' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org