Hi Sam, I love your patch! Yet something to improve: [auto build test ERROR on tegra-drm/drm/tegra/for-next] [also build test ERROR on pwm/for-next linus/master v5.7-rc5] [cannot apply to backlight/for-backlight-next next-20200515] [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/Sam-Ravnborg/backlight-updates/20200518-030516 base: git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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 COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>, old ones prefixed by <<): drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c: In function 'dsicm_probe_of': >> drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c:1221:21: error: implicit declaration of function 'of_find_backlight_by_node'; did you mean 'of_find_device_by_node'? [-Werror=implicit-function-declaration] 1221 | ddata->extbldev = of_find_backlight_by_node(backlight); | ^~~~~~~~~~~~~~~~~~~~~~~~~ | of_find_device_by_node >> drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c:1221:19: warning: assignment to 'struct backlight_device *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1221 | ddata->extbldev = of_find_backlight_by_node(backlight); | ^ cc1: some warnings being treated as errors vim +1221 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c dbc23840b4d70f drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-05-24 1162 cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1163 static int dsicm_probe_of(struct platform_device *pdev) cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1164 { cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1165 struct device_node *node = pdev->dev.of_node; a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1166 struct device_node *backlight; cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1167 struct panel_drv_data *ddata = platform_get_drvdata(pdev); e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1168 struct display_timing timing; 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1169 int err; cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1170 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1171 ddata->reset_gpio = devm_gpiod_get(&pdev->dev, "reset", GPIOD_OUT_LOW); 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1172 if (IS_ERR(ddata->reset_gpio)) { 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1173 err = PTR_ERR(ddata->reset_gpio); 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1174 dev_err(&pdev->dev, "reset gpio request failed: %d", err); 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1175 return err; cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1176 } cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1177 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1178 ddata->ext_te_gpio = devm_gpiod_get_optional(&pdev->dev, "te", 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1179 GPIOD_IN); 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1180 if (IS_ERR(ddata->ext_te_gpio)) { 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1181 err = PTR_ERR(ddata->ext_te_gpio); 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1182 dev_err(&pdev->dev, "TE gpio request failed: %d", err); 9231abd32876db drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1183 return err; cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1184 } cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1185 e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1186 err = of_get_display_timing(node, "panel-timing", &timing); e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1187 if (!err) { e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1188 videomode_from_timing(&timing, &ddata->vm); e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1189 if (!ddata->vm.pixelclock) e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1190 ddata->vm.pixelclock = e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1191 ddata->vm.hactive * ddata->vm.vactive * 60; e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1192 } else { e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1193 dev_warn(&pdev->dev, e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1194 "failed to get video timing, using defaults\n"); e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1195 } e128310ddd379b drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Tony Lindgren 2017-07-24 1196 d95c5a0e0154af drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1197 ddata->width_mm = 0; d95c5a0e0154af drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1198 of_property_read_u32(node, "width-mm", &ddata->width_mm); d95c5a0e0154af drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1199 d95c5a0e0154af drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1200 ddata->height_mm = 0; d95c5a0e0154af drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1201 of_property_read_u32(node, "height-mm", &ddata->height_mm); d95c5a0e0154af drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1202 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1203 ddata->vpnl = devm_regulator_get_optional(&pdev->dev, "vpnl"); 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1204 if (IS_ERR(ddata->vpnl)) { 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1205 err = PTR_ERR(ddata->vpnl); 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1206 if (err == -EPROBE_DEFER) 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1207 return err; 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1208 ddata->vpnl = NULL; 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1209 } 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1210 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1211 ddata->vddi = devm_regulator_get_optional(&pdev->dev, "vddi"); 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1212 if (IS_ERR(ddata->vddi)) { 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1213 err = PTR_ERR(ddata->vddi); 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1214 if (err == -EPROBE_DEFER) 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1215 return err; 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1216 ddata->vddi = NULL; 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1217 } 82fa10d46be9d1 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1218 a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1219 backlight = of_parse_phandle(node, "backlight", 0); a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1220 if (backlight) { a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 @1221 ddata->extbldev = of_find_backlight_by_node(backlight); a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1222 of_node_put(backlight); a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1223 a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1224 if (!ddata->extbldev) a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1225 return -EPROBE_DEFER; a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1226 } else { a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1227 /* assume native backlight support */ a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1228 ddata->use_dsi_backlight = true; a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1229 } a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1230 a44e552a1f4371 drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c Sebastian Reichel 2017-07-24 1231 /* TODO: ulps */ cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1232 cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1233 return 0; cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1234 } cdeeaca2a11d31 drivers/video/omap2/displays-new/panel-dsi-cm.c Tomi Valkeinen 2013-07-30 1235 :::::: The code at line 1221 was first introduced by commit :::::: a44e552a1f4371a02473da5448add5320a01f5ff drm/omap: panel-dsi-cm: add external backlight support :::::: TO: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxxxx> :::::: CC: Tomi Valkeinen <tomi.valkeinen@xxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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