Hi Thomas, I love your patch! Yet something to improve: [auto build test ERROR on next-20200305] [cannot apply to rockchip/for-next shawnguo/for-next sunxi/sunxi/for-next tegra/for-next linus/master v5.6-rc4 v5.6-rc3 v5.6-rc2 v5.6-rc4] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/drm-Convert-drivers-to-drm_simple_encoder_init/20200306-045931 base: 47466dcf84ee66a973ea7d2fca7e582fe9328932 config: sparc-allyesconfig (attached as .config) compiler: sparc64-linux-gcc (GCC) 7.5.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.5.0 make.cross ARCH=sparc If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): drivers/gpu/drm/rockchip/analogix_dp-rockchip.c: In function 'rockchip_dp_drm_create_encoder': >> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:309:8: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] ret = drm_simple_encoder_init(drm_dev, encoder, ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors -- drivers/gpu/drm/rockchip/cdn-dp-core.c: In function 'cdn_dp_bind': >> drivers/gpu/drm/rockchip/cdn-dp-core.c:1030:8: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] ret = drm_simple_encoder_init(drm_dev, encoder, ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors -- drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c: In function 'dw_hdmi_rockchip_bind': >> drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:546:2: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors -- drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c: In function 'rockchip_dsi_drm_create_encoder': >> drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c:802:8: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_DSI); ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors -- drivers/gpu/drm/rockchip/inno_hdmi.c: In function 'inno_hdmi_register': >> drivers/gpu/drm/rockchip/inno_hdmi.c:617:2: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors -- drivers/gpu/drm/rockchip/rockchip_lvds.c: In function 'rockchip_lvds_bind': >> drivers/gpu/drm/rockchip/rockchip_lvds.c:607:8: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_LVDS); ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors -- drivers/gpu/drm/rockchip/rockchip_rgb.c: In function 'rockchip_rgb_init': >> drivers/gpu/drm/rockchip/rockchip_rgb.c:125:8: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_NONE); ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors -- drivers/gpu/drm/rockchip/rk3066_hdmi.c: In function 'rk3066_hdmi_register': >> drivers/gpu/drm/rockchip/rk3066_hdmi.c:557:2: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors vim +309 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c 297 298 static int rockchip_dp_drm_create_encoder(struct rockchip_dp_device *dp) 299 { 300 struct drm_encoder *encoder = &dp->encoder; 301 struct drm_device *drm_dev = dp->drm_dev; 302 struct device *dev = dp->dev; 303 int ret; 304 305 encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, 306 dev->of_node); 307 DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); 308 > 309 ret = drm_simple_encoder_init(drm_dev, encoder, 310 DRM_MODE_ENCODER_TMDS); 311 if (ret) { 312 DRM_ERROR("failed to initialize encoder with drm\n"); 313 return ret; 314 } 315 316 drm_encoder_helper_add(encoder, &rockchip_dp_encoder_helper_funcs); 317 318 return 0; 319 } 320 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org