Hi Jani, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-tip/drm-tip] url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/drm-edid-split-out-drm_eld-h-from-drm_edid-h/20230907-173011 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip patch link: https://lore.kernel.org/r/eba53a0904126fb904a5190750002695350f44eb.1694078430.git.jani.nikula%40intel.com patch subject: [PATCH 5/6] drm/edid: add helpers to get/set struct cea_sad from/to 3-byte sad config: arm-defconfig (https://download.01.org/0day-ci/archive/20230907/202309071934.AzntzCVc-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/20230907/202309071934.AzntzCVc-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/202309071934.AzntzCVc-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/drm_edid.c:5505:6: warning: no previous prototype for 'drm_edid_cta_sad_get' [-Wmissing-prototypes] 5505 | void drm_edid_cta_sad_get(const struct cea_sad *cta_sad, u8 *sad) | ^~~~~~~~~~~~~~~~~~~~ >> drivers/gpu/drm/drm_edid.c:5515:6: warning: no previous prototype for 'drm_edid_cta_sad_set' [-Wmissing-prototypes] 5515 | void drm_edid_cta_sad_set(struct cea_sad *cta_sad, const u8 *sad) | ^~~~~~~~~~~~~~~~~~~~ vim +/drm_edid_cta_sad_get +5505 drivers/gpu/drm/drm_edid.c 5501 5502 /* 5503 * Get 3-byte SAD buf from struct cea_sad. 5504 */ > 5505 void drm_edid_cta_sad_get(const struct cea_sad *cta_sad, u8 *sad) 5506 { 5507 sad[0] = cta_sad->format << 3 | cta_sad->channels; 5508 sad[1] = cta_sad->freq; 5509 sad[2] = cta_sad->byte2; 5510 } 5511 5512 /* 5513 * Set struct cea_sad from 3-byte SAD buf. 5514 */ > 5515 void drm_edid_cta_sad_set(struct cea_sad *cta_sad, const u8 *sad) 5516 { 5517 cta_sad->format = (sad[0] & 0x78) >> 3; 5518 cta_sad->channels = sad[0] & 0x07; 5519 cta_sad->freq = sad[1] & 0x7f; 5520 cta_sad->byte2 = sad[2]; 5521 } 5522 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
