Hi Raphael, kernel test robot noticed the following build warnings: [auto build test WARNING on bb3bc3eac316b7c388733e625cc2343131b69dee] url: https://github.com/intel-lab-lkp/linux/commits/Raphael-Gallais-Pou/dt-bindings-display-add-STM32-LVDS-device/20240206-194740 base: bb3bc3eac316b7c388733e625cc2343131b69dee patch link: https://lore.kernel.org/r/20240206-lvds-v5-2-bd16797b0f09%40foss.st.com patch subject: [PATCH v5 2/3] drm/stm: lvds: add new STM32 LVDS Display Interface Transmitter driver config: arm-randconfig-r132-20240214 (https://download.01.org/0day-ci/archive/20240216/202402162038.HP7VzIHX-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce: (https://download.01.org/0day-ci/archive/20240216/202402162038.HP7VzIHX-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402162038.HP7VzIHX-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/gpu/drm/stm/lvds.c:318:17: sparse: sparse: symbol 'lvds_bitmap_jeida_rgb888' was not declared. Should it be static? >> drivers/gpu/drm/stm/lvds.c:335:17: sparse: sparse: symbol 'lvds_bitmap_vesa_rgb888' was not declared. Should it be static? drivers/gpu/drm/stm/lvds.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/stackdepot.h, ...): include/linux/page-flags.h:242:46: sparse: sparse: self-comparison always evaluates to false vim +/lvds_bitmap_jeida_rgb888 +318 drivers/gpu/drm/stm/lvds.c 308 309 /* 310 * Expected JEIDA-RGB888 data to be sent in LSB format 311 * bit6 ............................bit0 312 * CHAN0 {ONE, ONE, ZERO, ZERO, ZERO, ONE, ONE} 313 * CHAN1 {G2, R7, R6, R5, R4, R3, R2} 314 * CHAN2 {B3, B2, G7, G6, G5, G4, G3} 315 * CHAN3 {DE, VS, HS, B7, B6, B5, B4} 316 * CHAN4 {CE, B1, B0, G1, G0, R1, R0} 317 */ > 318 enum lvds_pixel lvds_bitmap_jeida_rgb888[5][7] = { 319 { PIX_ONE, PIX_ONE, PIX_ZER, PIX_ZER, PIX_ZER, PIX_ONE, PIX_ONE }, 320 { PIX_G_2, PIX_R_7, PIX_R_6, PIX_R_5, PIX_R_4, PIX_R_3, PIX_R_2 }, 321 { PIX_B_3, PIX_B_2, PIX_G_7, PIX_G_6, PIX_G_5, PIX_G_4, PIX_G_3 }, 322 { PIX_D_E, PIX_V_S, PIX_H_S, PIX_B_7, PIX_B_6, PIX_B_5, PIX_B_4 }, 323 { PIX_C_E, PIX_B_1, PIX_B_0, PIX_G_1, PIX_G_0, PIX_R_1, PIX_R_0 } 324 }; 325 326 /* 327 * Expected VESA-RGB888 data to be sent in LSB format 328 * bit6 ............................bit0 329 * CHAN0 {ONE, ONE, ZERO, ZERO, ZERO, ONE, ONE} 330 * CHAN1 {G0, R5, R4, R3, R2, R1, R0} 331 * CHAN2 {B1, B0, G5, G4, G3, G2, G1} 332 * CHAN3 {DE, VS, HS, B5, B4, B3, B2} 333 * CHAN4 {CE, B7, B6, G7, G6, R7, R6} 334 */ > 335 enum lvds_pixel lvds_bitmap_vesa_rgb888[5][7] = { 336 { PIX_ONE, PIX_ONE, PIX_ZER, PIX_ZER, PIX_ZER, PIX_ONE, PIX_ONE }, 337 { PIX_G_0, PIX_R_5, PIX_R_4, PIX_R_3, PIX_R_2, PIX_R_1, PIX_R_0 }, 338 { PIX_B_1, PIX_B_0, PIX_G_5, PIX_G_4, PIX_G_3, PIX_G_2, PIX_G_1 }, 339 { PIX_D_E, PIX_V_S, PIX_H_S, PIX_B_5, PIX_B_4, PIX_B_3, PIX_B_2 }, 340 { PIX_C_E, PIX_B_7, PIX_B_6, PIX_G_7, PIX_G_6, PIX_R_7, PIX_R_6 } 341 }; 342 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
