Hi Thomas, I love your patch! Yet something to improve: [auto build test ERROR on next-20200305] [also build test ERROR on v5.6-rc4] [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] [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: arm-at91_dt_defconfig (attached as .config) compiler: arm-linux-gnueabi-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=arm If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/gpu//drm/atmel-hlcdc/atmel_hlcdc_output.c: In function 'atmel_hlcdc_attach_endpoint': >> drivers/gpu//drm/atmel-hlcdc/atmel_hlcdc_output.c:98:8: error: implicit declaration of function 'drm_simple_encoder_init'; did you mean 'drm_encoder_init'? [-Werror=implicit-function-declaration] ret = drm_simple_encoder_init(dev, &output->encoder, ^~~~~~~~~~~~~~~~~~~~~~~ drm_encoder_init cc1: some warnings being treated as errors vim +98 drivers/gpu//drm/atmel-hlcdc/atmel_hlcdc_output.c 65 66 static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint) 67 { 68 struct atmel_hlcdc_rgb_output *output; 69 struct device_node *ep; 70 struct drm_panel *panel; 71 struct drm_bridge *bridge; 72 int ret; 73 74 ep = of_graph_get_endpoint_by_regs(dev->dev->of_node, 0, endpoint); 75 if (!ep) 76 return -ENODEV; 77 78 ret = drm_of_find_panel_or_bridge(dev->dev->of_node, 0, endpoint, 79 &panel, &bridge); 80 if (ret) { 81 of_node_put(ep); 82 return ret; 83 } 84 85 output = devm_kzalloc(dev->dev, sizeof(*output), GFP_KERNEL); 86 if (!output) { 87 of_node_put(ep); 88 return -ENOMEM; 89 } 90 91 output->bus_fmt = atmel_hlcdc_of_bus_fmt(ep); 92 of_node_put(ep); 93 if (output->bus_fmt < 0) { 94 dev_err(dev->dev, "endpoint %d: invalid bus width\n", endpoint); 95 return -EINVAL; 96 } 97 > 98 ret = drm_simple_encoder_init(dev, &output->encoder, 99 DRM_MODE_ENCODER_NONE); 100 if (ret) 101 return ret; 102 103 output->encoder.possible_crtcs = 0x1; 104 105 if (panel) { 106 bridge = drm_panel_bridge_add_typed(panel, 107 DRM_MODE_CONNECTOR_Unknown); 108 if (IS_ERR(bridge)) 109 return PTR_ERR(bridge); 110 } 111 112 if (bridge) { 113 ret = drm_bridge_attach(&output->encoder, bridge, NULL, 0); 114 if (!ret) 115 return 0; 116 117 if (panel) 118 drm_panel_bridge_remove(bridge); 119 } 120 121 drm_encoder_cleanup(&output->encoder); 122 123 return ret; 124 } 125 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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