Hi Sam, I love your patch! Yet something to improve: [auto build test ERROR on backlight/for-backlight-next] [also build test ERROR on tegra-drm/drm/tegra/for-next pwm/for-next linus/master v5.8-rc4] [cannot apply to next-20200707] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Sam-Ravnborg/backlight-backlight-updates/20200704-024949 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight.git for-backlight-next config: arm-randconfig-r034-20200707 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/gpu/drm/tilcdc/tilcdc_panel.c: In function 'panel_probe': >> drivers/gpu/drm/tilcdc/tilcdc_panel.c:320:26: error: implicit declaration of function 'of_find_backlight_by_node'; did you mean 'of_find_i2c_adapter_by_node'? [-Werror=implicit-function-declaration] 320 | panel_mod->backlight = of_find_backlight_by_node(bl_node); | ^~~~~~~~~~~~~~~~~~~~~~~~~ | of_find_i2c_adapter_by_node >> drivers/gpu/drm/tilcdc/tilcdc_panel.c:320:24: error: assignment to 'struct backlight_device *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion] 320 | panel_mod->backlight = of_find_backlight_by_node(bl_node); | ^ cc1: all warnings being treated as errors vim +320 drivers/gpu/drm/tilcdc/tilcdc_panel.c 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 299 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 300 static int panel_probe(struct platform_device *pdev) 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 301 { 18c44db8cafe9b Ezequiel Garcia 2014-09-02 302 struct device_node *bl_node, *node = pdev->dev.of_node; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 303 struct panel_module *panel_mod; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 304 struct tilcdc_module *mod; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 305 struct pinctrl *pinctrl; 12778fc14301cf Ezequiel Garcia 2014-09-02 306 int ret; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 307 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 308 /* bail out early if no DT data: */ 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 309 if (!node) { 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 310 dev_err(&pdev->dev, "device-tree data is missing\n"); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 311 return -ENXIO; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 312 } 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 313 971645d1fd734b Ezequiel Garcia 2014-09-02 314 panel_mod = devm_kzalloc(&pdev->dev, sizeof(*panel_mod), GFP_KERNEL); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 315 if (!panel_mod) 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 316 return -ENOMEM; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 317 18c44db8cafe9b Ezequiel Garcia 2014-09-02 318 bl_node = of_parse_phandle(node, "backlight", 0); 18c44db8cafe9b Ezequiel Garcia 2014-09-02 319 if (bl_node) { 18c44db8cafe9b Ezequiel Garcia 2014-09-02 @320 panel_mod->backlight = of_find_backlight_by_node(bl_node); 18c44db8cafe9b Ezequiel Garcia 2014-09-02 321 of_node_put(bl_node); 18c44db8cafe9b Ezequiel Garcia 2014-09-02 322 18c44db8cafe9b Ezequiel Garcia 2014-09-02 323 if (!panel_mod->backlight) 18c44db8cafe9b Ezequiel Garcia 2014-09-02 324 return -EPROBE_DEFER; 18c44db8cafe9b Ezequiel Garcia 2014-09-02 325 18c44db8cafe9b Ezequiel Garcia 2014-09-02 326 dev_info(&pdev->dev, "found backlight\n"); 18c44db8cafe9b Ezequiel Garcia 2014-09-02 327 } 18c44db8cafe9b Ezequiel Garcia 2014-09-02 328 26a5bd26499fba Uwe Kleine-König 2015-02-11 329 panel_mod->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable", 26a5bd26499fba Uwe Kleine-König 2015-02-11 330 GPIOD_OUT_LOW); d898ce03675fc0 Ezequiel Garcia 2014-09-02 331 if (IS_ERR(panel_mod->enable_gpio)) { d898ce03675fc0 Ezequiel Garcia 2014-09-02 332 ret = PTR_ERR(panel_mod->enable_gpio); d898ce03675fc0 Ezequiel Garcia 2014-09-02 333 dev_err(&pdev->dev, "failed to request enable GPIO\n"); d898ce03675fc0 Ezequiel Garcia 2014-09-02 334 goto fail_backlight; d898ce03675fc0 Ezequiel Garcia 2014-09-02 335 } d898ce03675fc0 Ezequiel Garcia 2014-09-02 336 26a5bd26499fba Uwe Kleine-König 2015-02-11 337 if (panel_mod->enable_gpio) d898ce03675fc0 Ezequiel Garcia 2014-09-02 338 dev_info(&pdev->dev, "found enable GPIO\n"); d898ce03675fc0 Ezequiel Garcia 2014-09-02 339 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 340 mod = &panel_mod->base; 7cdcce9f8b4c15 Guido Martínez 2014-06-17 341 pdev->dev.platform_data = mod; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 342 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 343 tilcdc_module_init(mod, "panel", &panel_module_ops); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 344 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 345 pinctrl = devm_pinctrl_get_select_default(&pdev->dev); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 346 if (IS_ERR(pinctrl)) 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 347 dev_warn(&pdev->dev, "pins are not configured\n"); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 348 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 349 panel_mod->timings = of_get_display_timings(node); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 350 if (!panel_mod->timings) { 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 351 dev_err(&pdev->dev, "could not get panel timings\n"); 12778fc14301cf Ezequiel Garcia 2014-09-02 352 ret = -EINVAL; 7cdcce9f8b4c15 Guido Martínez 2014-06-17 353 goto fail_free; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 354 } 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 355 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 356 panel_mod->info = of_get_panel_info(node); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 357 if (!panel_mod->info) { 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 358 dev_err(&pdev->dev, "could not get panel info\n"); 12778fc14301cf Ezequiel Garcia 2014-09-02 359 ret = -EINVAL; 7cdcce9f8b4c15 Guido Martínez 2014-06-17 360 goto fail_timings; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 361 } 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 362 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 363 return 0; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 364 7cdcce9f8b4c15 Guido Martínez 2014-06-17 365 fail_timings: 7cdcce9f8b4c15 Guido Martínez 2014-06-17 366 display_timings_release(panel_mod->timings); 7cdcce9f8b4c15 Guido Martínez 2014-06-17 367 7cdcce9f8b4c15 Guido Martínez 2014-06-17 368 fail_free: 7cdcce9f8b4c15 Guido Martínez 2014-06-17 369 tilcdc_module_cleanup(mod); d898ce03675fc0 Ezequiel Garcia 2014-09-02 370 d898ce03675fc0 Ezequiel Garcia 2014-09-02 371 fail_backlight: 18c44db8cafe9b Ezequiel Garcia 2014-09-02 372 if (panel_mod->backlight) 18c44db8cafe9b Ezequiel Garcia 2014-09-02 373 put_device(&panel_mod->backlight->dev); 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 374 return ret; 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 375 } 0d4bbaf9f3e5b9 Rob Clark 2012-12-18 376 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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