Hi David, kernel test robot noticed the following build warnings:
[auto build test WARNING on ce7f1a983b074f6cf8609068088ca3182c569ee4] url: https://github.com/intel-lab-lkp/linux/commits/David-Heidelberg-via-B4-Relay/dt-bindings-panel-Add-Samsung-S6E3FC2X01-DDIC-with-panel/20250925-171444 base: ce7f1a983b074f6cf8609068088ca3182c569ee4 patch link: https://lore.kernel.org/r/20250925-s6e3fc2x01-v1-8-9293016768f7%40ixit.cz patch subject: [PATCH 8/8] drm/panel: Add Samsung S6E3FC2X01 DDIC with AMS641RW panel config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250928/202509280303.sweqi4ks-...@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250928/202509280303.sweqi4ks-...@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/202509280303.sweqi4ks-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/panel/panel-samsung-s6e3fc2x01.c:210:17: warning: unused >> variable 'dev' [-Wunused-variable] 210 | struct device *dev = &ctx->dsi->dev; | ^~~ >> drivers/gpu/drm/panel/panel-samsung-s6e3fc2x01.c:256:29: warning: unused >> variable 'ctx' [-Wunused-variable] 256 | struct samsung_s6e3fc2x01 *ctx = to_samsung_s6e3fc2x01(panel); | ^~~ 2 warnings generated. vim +/dev +210 drivers/gpu/drm/panel/panel-samsung-s6e3fc2x01.c 206 207 static int s6e3fc2x01_prepare(struct drm_panel *panel) 208 { 209 struct samsung_s6e3fc2x01 *ctx = to_samsung_s6e3fc2x01(panel); > 210 struct device *dev = &ctx->dsi->dev; 211 int ret; 212 213 ret = regulator_bulk_enable(ARRAY_SIZE(s6e3fc2x01_supplies), ctx->supplies); 214 if (ret < 0) 215 return ret; 216 217 s6e3fc2x01_reset(ctx); 218 219 ret = s6e3fc2x01_on(ctx); 220 if (ret < 0) { 221 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 222 regulator_bulk_disable(ARRAY_SIZE(s6e3fc2x01_supplies), ctx->supplies); 223 return ret; 224 } 225 226 return 0; 227 } 228 229 static int s6e3fc2x01_unprepare(struct drm_panel *panel) 230 { 231 struct samsung_s6e3fc2x01 *ctx = to_samsung_s6e3fc2x01(panel); 232 233 gpiod_set_value_cansleep(ctx->reset_gpio, 0); 234 regulator_bulk_disable(ARRAY_SIZE(s6e3fc2x01_supplies), ctx->supplies); 235 236 return 0; 237 } 238 239 static const struct drm_display_mode ams641rw_mode = { 240 .clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000, 241 .hdisplay = 1080, 242 .hsync_start = 1080 + 72, 243 .hsync_end = 1080 + 72 + 16, 244 .htotal = 1080 + 72 + 16 + 36, 245 .vdisplay = 2340, 246 .vsync_start = 2340 + 32, 247 .vsync_end = 2340 + 32 + 4, 248 .vtotal = 2340 + 32 + 4 + 18, 249 .width_mm = 68, 250 .height_mm = 145, 251 }; 252 253 static int s6e3fc2x01_get_modes(struct drm_panel *panel, 254 struct drm_connector *connector) 255 { > 256 struct samsung_s6e3fc2x01 *ctx = to_samsung_s6e3fc2x01(panel); 257 struct drm_display_mode *mode; 258 259 mode = drm_mode_duplicate(connector->dev, &ams641rw_mode); 260 if (!mode) 261 return -ENOMEM; 262 263 drm_mode_set_name(mode); 264 265 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; 266 connector->display_info.width_mm = mode->width_mm; 267 connector->display_info.height_mm = mode->height_mm; 268 drm_mode_probed_add(connector, mode); 269 270 return 1; 271 } 272 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
