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-dr... base: 47466dcf84ee66a973ea7d2fca7e582fe9328932 config: arm64-defconfig (attached as .config) compiler: clang version 11.0.0 (git://gitmirror/llvm_project a0cd413426479abb207381bdbab862f3dfb3ce7d) reproduce: # FIXME the reproduce steps for clang is not ready yet If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): ret = drm_simple_encoder_init(drm, &lvds->encoder, ^ drivers/gpu/drm/sun4i/sun4i_lvds.c:121:8: note: did you mean 'drm_encoder_init'? include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here int drm_encoder_init(struct drm_device *dev, ^ 1 error generated. -- ret = drm_simple_encoder_init(drm, &rgb->encoder, ^ drivers/gpu/drm/sun4i/sun4i_rgb.c:213:8: note: did you mean 'drm_encoder_init'? include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here int drm_encoder_init(struct drm_device *dev, ^ 1 error generated. -- ret = drm_simple_encoder_init(drm, &hdmi->encoder, ^ drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c:611:8: note: did you mean 'drm_encoder_init'? include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here int drm_encoder_init(struct drm_device *dev, ^ 1 error generated. -- drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS); ^ drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c:220:2: note: did you mean 'drm_encoder_init'? include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here int drm_encoder_init(struct drm_device *dev, ^ 1 error generated. -- ret = drm_simple_encoder_init(drm, &tv->encoder, ^ drivers/gpu/drm/sun4i/sun4i_tv.c:587:8: note: did you mean 'drm_encoder_init'? include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here int drm_encoder_init(struct drm_device *dev, ^ 1 error generated. -- ret = drm_simple_encoder_init(drm, &dsi->encoder, ^ drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c:1062:8: note: did you mean 'drm_encoder_init'? include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here int drm_encoder_init(struct drm_device *dev, ^ 1 error generated. vim +/drm_simple_encoder_init +121 drivers/gpu/drm/sun4i/sun4i_lvds.c 99 100 int sun4i_lvds_init(struct drm_device *drm, struct sun4i_tcon *tcon) 101 { 102 struct drm_encoder *encoder; 103 struct drm_bridge *bridge; 104 struct sun4i_lvds *lvds; 105 int ret; 106 107 lvds = devm_kzalloc(drm->dev, sizeof(*lvds), GFP_KERNEL); 108 if (!lvds) 109 return -ENOMEM; 110 encoder = &lvds->encoder; 111 112 ret = drm_of_find_panel_or_bridge(tcon->dev->of_node, 1, 0, 113 &lvds->panel, &bridge); 114 if (ret) { 115 dev_info(drm->dev, "No panel or bridge found... LVDS output disabled\n"); 116 return 0; 117 } 118 119 drm_encoder_helper_add(&lvds->encoder, 120 &sun4i_lvds_enc_helper_funcs); --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org