Hi Alexandra, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.6-rc3 next-20230929] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Alexandra-Diupina/drm-rcar-du-turn-rcar_du_group_get-into-void-and-remove-its-return-value-check/20230927-184651 base: linus/master patch link: https://lore.kernel.org/r/20230927104438.30628-1-adiupina%40astralinux.ru patch subject: [PATCH v2] drm: rcar-du: turn rcar_du_group_get() into void and remove its return value check config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20230930/202309301402.uR7IRQVj-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230930/202309301402.uR7IRQVj-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/202309301402.uR7IRQVj-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c:203:6: error: conflicting types for 'rcar_du_group_get'; have 'void(struct rcar_du_group *)' 203 | void rcar_du_group_get(struct rcar_du_group *rgrp) | ^~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.h:20, from drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c:29: drivers/gpu/drm/renesas/rcar-du/rcar_du_group.h:57:5: note: previous declaration of 'rcar_du_group_get' with type 'int(struct rcar_du_group *)' 57 | int rcar_du_group_get(struct rcar_du_group *rgrp); | ^~~~~~~~~~~~~~~~~ vim +203 drivers/gpu/drm/renesas/rcar-du/rcar_du_group.c 194 195 /* 196 * rcar_du_group_get - Acquire a reference to the DU channels group 197 * 198 * Acquiring the first reference setups core registers. A reference must be held 199 * before accessing any hardware registers. 200 * 201 * This function must be called with the DRM mode_config lock held. 202 */ > 203 void rcar_du_group_get(struct rcar_du_group *rgrp) 204 { 205 if (rgrp->use_count) 206 goto done; 207 208 rcar_du_group_setup(rgrp); 209 210 done: 211 rgrp->use_count++; 212 } 213 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
