[kbuild-all] [intel-linux-intel-lts:5.10/yocto 9825/9862] drivers/media/pci/intel/ipu6/../ipu.c:379:6: warning: no previous prototype for 'fixup_spdata'

tree: https://github.com/intel/linux-intel-lts.git 5.10/yocto head: cb7e61a3cffb19413bc9d8ad7e0b690eec519348 commit: 2def42a616c1ceec2eb739c6befb6af42f6ee22c [9825/9862] Fix compile issue config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/intel/linux-intel-lts/commit/2def42a616c1ceec2eb739c6b... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 5.10/yocto git checkout 2def42a616c1ceec2eb739c6befb6af42f6ee22c # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 379 | void fixup_spdata(const void *spdata_rep, | ^~~~~~~~~~~~ vim +/fixup_spdata +379 drivers/media/pci/intel/ipu6/../ipu.c 1aafb1e0df5527 Ng Khai Wen 2021-07-01 378 1aafb1e0df5527 Ng Khai Wen 2021-07-01 @379 void fixup_spdata(const void *spdata_rep, 1aafb1e0df5527 Ng Khai Wen 2021-07-01 380 struct ipu_isys_subdev_pdata *spdata) 1aafb1e0df5527 Ng Khai Wen 2021-07-01 381 { 1aafb1e0df5527 Ng Khai Wen 2021-07-01 382 const struct ipu_spdata_rep *rep = spdata_rep; 1aafb1e0df5527 Ng Khai Wen 2021-07-01 383 struct ipu_isys_subdev_info **subdevs, *sd_info; 1aafb1e0df5527 Ng Khai Wen 2021-07-01 384 1aafb1e0df5527 Ng Khai Wen 2021-07-01 385 if (!spdata) 1aafb1e0df5527 Ng Khai Wen 2021-07-01 386 return; 1aafb1e0df5527 Ng Khai Wen 2021-07-01 387 1aafb1e0df5527 Ng Khai Wen 2021-07-01 388 for (; rep->name[0]; rep++) { 1aafb1e0df5527 Ng Khai Wen 2021-07-01 389 for (subdevs = spdata->subdevs; *subdevs; subdevs++) { 1aafb1e0df5527 Ng Khai Wen 2021-07-01 390 sd_info = *subdevs; 1aafb1e0df5527 Ng Khai Wen 2021-07-01 391 1aafb1e0df5527 Ng Khai Wen 2021-07-01 392 if (!sd_info->csi2) 1aafb1e0df5527 Ng Khai Wen 2021-07-01 393 continue; 1aafb1e0df5527 Ng Khai Wen 2021-07-01 394 1aafb1e0df5527 Ng Khai Wen 2021-07-01 395 if (match_spdata(sd_info, rep)) { 1aafb1e0df5527 Ng Khai Wen 2021-07-01 396 strcpy(sd_info->i2c.i2c_adapter_bdf, 1aafb1e0df5527 Ng Khai Wen 2021-07-01 397 rep->i2c_adapter_bdf_n); 1aafb1e0df5527 Ng Khai Wen 2021-07-01 398 sd_info->i2c.board_info.addr = 1aafb1e0df5527 Ng Khai Wen 2021-07-01 399 rep->slave_addr_n; 1aafb1e0df5527 Ng Khai Wen 2021-07-01 400 sd_info->csi2->port = rep->port_n; 1aafb1e0df5527 Ng Khai Wen 2021-07-01 401 1aafb1e0df5527 Ng Khai Wen 2021-07-01 402 if (sd_info->fixup_spdata) 1aafb1e0df5527 Ng Khai Wen 2021-07-01 403 sd_info->fixup_spdata(rep, 1aafb1e0df5527 Ng Khai Wen 2021-07-01 404 sd_info->i2c.board_info.platform_data); 1aafb1e0df5527 Ng Khai Wen 2021-07-01 405 } 1aafb1e0df5527 Ng Khai Wen 2021-07-01 406 } 1aafb1e0df5527 Ng Khai Wen 2021-07-01 407 } 1aafb1e0df5527 Ng Khai Wen 2021-07-01 408 } 1aafb1e0df5527 Ng Khai Wen 2021-07-01 409 :::::: The code at line 379 was first introduced by commit :::::: 1aafb1e0df5527884ad5ccb67ec95414df4d85f7 Add IPU driver :::::: TO: Ng Khai Wen <khai.wen.ng(a)intel.com&gt; :::::: CC: Pan, Kris <kris.pan(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org