[kbuild-all] [agd5f:amd-staging-drm-next 2145/2165] drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/aldebaran_ppt.c:1435:5: warning: no previous prototype for function 'aldebaran_mode2_reset'

tree: https://gitlab.freedesktop.org/agd5f/linux.git amd-staging-drm-next head: a34b64a7d2e86965f4a257dc94e764a084faf5a7 commit: d5efb32c00f66ef51a91c563cc1e956dfd7e6143 [2145/2165] drm/amd/pm: Modify mode2 msg sequence on aldebaran config: arm-randconfig-r035-20210323 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 78a65cd945d006ff02f9d24d9cc20a302ed93b08) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git git fetch --no-tags agd5f amd-staging-drm-next git checkout d5efb32c00f66ef51a91c563cc1e956dfd7e6143 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 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 >>): int aldebaran_mode2_reset(struct smu_context *smu) ^ drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/aldebaran_ppt.c:1435:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int aldebaran_mode2_reset(struct smu_context *smu) ^ static 1 warning generated. vim +/aldebaran_mode2_reset +1435 drivers/gpu/drm/amd/amdgpu/../pm/swsmu/smu13/aldebaran_ppt.c 1434 1436 { 1437 u32 smu_version; 1438 int ret = 0, index; 1439 struct amdgpu_device *adev = smu->adev; 1440 int timeout = 10; 1441 1442 smu_cmn_get_smc_version(smu, NULL, &smu_version); 1443 1444 index = smu_cmn_to_asic_specific_index(smu, CMN2ASIC_MAPPING_MSG, 1445 SMU_MSG_GfxDeviceDriverReset); 1446 1447 mutex_lock(&smu->message_lock); 1448 if (smu_version >= 0x00441400) { 1449 ret = smu_cmn_send_msg_without_waiting(smu, (uint16_t)index, SMU_RESET_MODE_2); 1450 /* This is similar to FLR, wait till max FLR timeout */ 1451 msleep(100); 1452 dev_dbg(smu->adev->dev, "restore config space...\n"); 1453 /* Restore the config space saved during init */ 1454 amdgpu_device_load_pci_state(adev->pdev); 1455 1456 dev_dbg(smu->adev->dev, "wait for reset ack\n"); 1457 while (ret == -ETIME && timeout) { 1458 ret = smu_cmn_wait_for_response(smu); 1459 /* Wait a bit more time for getting ACK */ 1460 if (ret == -ETIME) { 1461 --timeout; 1462 usleep_range(500, 1000); 1463 continue; 1464 } 1465 1466 if (ret != 1) { 1467 dev_err(adev->dev, "failed to send mode2 message \tparam: 0x%08x response %#x\n", 1468 SMU_RESET_MODE_2, ret); 1469 goto out; 1470 } 1471 } 1472 1473 } else { 1474 dev_err(adev->dev, "smu fw 0x%x does not support MSG_GfxDeviceDriverReset MSG\n", 1475 smu_version); 1476 } 1477 1478 if (ret == 1) 1479 ret = 0; 1480 out: 1481 mutex_unlock(&smu->message_lock); 1482 1483 return ret; 1484 } 1485 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org