Hi Rouven, kernel test robot noticed the following build errors:
[auto build test ERROR on c2ee9f594da826bea183ed14f2cc029c719bf4da] url: https://github.com/intel-lab-lkp/linux/commits/Rouven-Czerwinski/dt-bindings-display-panel-add-YAML-schema-for-LXD-M9189A/20241025-221252 base: c2ee9f594da826bea183ed14f2cc029c719bf4da patch link: https://lore.kernel.org/r/20241025141130.3179166-3-r.czerwinski%40pengutronix.de patch subject: [PATCH v2 3/3] drm/panel: add LXD M9189A panel driver config: arm-randconfig-r062-20241102 (https://download.01.org/0day-ci/archive/20241102/202411020816.nb9aevto-...@intel.com/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241102/202411020816.nb9aevto-...@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202411020816.nb9aevto-...@intel.com/ All errors (new ones prefixed by >>): >> drivers/gpu/drm/panel/panel-lxd-m9189a.c:173:29: error: variable 'ret' is >> uninitialized when used here [-Werror,-Wuninitialized] 173 | return dev_err_probe(dev, ret, "Failed to get regulator\n"); | ^~~ drivers/gpu/drm/panel/panel-lxd-m9189a.c:165:9: note: initialize the variable 'ret' to silence this warning 165 | int ret; | ^ | = 0 1 error generated. vim +/ret +173 drivers/gpu/drm/panel/panel-lxd-m9189a.c 160 161 static int lxd_m9189_probe(struct mipi_dsi_device *dsi) 162 { 163 struct device *dev = &dsi->dev; 164 struct m9189_panel *m9189; 165 int ret; 166 167 m9189 = devm_kzalloc(dev, sizeof(*m9189), GFP_KERNEL); 168 if (!m9189) 169 return -ENOMEM; 170 171 m9189->supply = devm_regulator_get(dev, "vdd"); 172 if (IS_ERR(m9189->supply)) > 173 return dev_err_probe(dev, ret, "Failed to get > regulator\n"); 174 175 m9189->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); 176 if (IS_ERR(m9189->reset_gpio)) 177 return dev_err_probe(dev, PTR_ERR(m9189->reset_gpio), 178 "Failed to get reset-gpios\n"); 179 180 m9189->standby_gpio = devm_gpiod_get(dev, "standby", GPIOD_OUT_LOW); 181 if (IS_ERR(m9189->standby_gpio)) 182 return dev_err_probe(dev, PTR_ERR(m9189->standby_gpio), 183 "Failed to get standby-gpios\n"); 184 185 m9189->dsi = dsi; 186 mipi_dsi_set_drvdata(dsi, m9189); 187 188 dsi->lanes = 4; 189 dsi->format = MIPI_DSI_FMT_RGB888; 190 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST; 191 192 drm_panel_init(&m9189->panel, dev, &m9189_panel_funcs, 193 DRM_MODE_CONNECTOR_DSI); 194 m9189->panel.prepare_prev_first = true; 195 196 ret = drm_panel_of_backlight(&m9189->panel); 197 if (ret) 198 return dev_err_probe(dev, ret, "Failed to get backlight\n"); 199 200 drm_panel_add(&m9189->panel); 201 202 ret = mipi_dsi_attach(dsi); 203 if (ret < 0) { 204 dev_err_probe(dev, ret, "Failed to attach to DSI host\n"); 205 drm_panel_remove(&m9189->panel); 206 return ret; 207 } 208 209 return 0; 210 } 211 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
