[linux-next:master 7512/8469] drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:4578:6: warning: no previous prototype for 'amdgpu_device_recheck_guilty_jobs'

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   9d49ed9ca93b8c564033c1d6808017bc9052b5db
commit: 13202496bf8a62ad53279167d3db440cecb7ff18 [7512/8469] drm/amd/amdgpu implement tdr advanced mode
config: alpha-randconfig-r015-20210329 (attached as .config)
compiler: alpha-linux-gcc (GCC) 9.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=13202496bf8a62ad53279167d3db440cecb7ff18
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 13202496bf8a62ad53279167d3db440cecb7ff18
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c: In function 'amdgpu_device_suspend':
   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:3720:6: warning: variable 'r' set but not used [-Wunused-but-set-variable]
    3720 |  int r;
         |      ^
   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c: At top level:
>> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:4578:6: warning: no previous prototype for 'amdgpu_device_recheck_guilty_jobs' [-Wmissing-prototypes]
    4578 | void amdgpu_device_recheck_guilty_jobs(struct amdgpu_device *adev,
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/amdgpu_device_recheck_guilty_jobs +4578 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

  4577	
> 4578	void amdgpu_device_recheck_guilty_jobs(struct amdgpu_device *adev,
  4579				       struct amdgpu_hive_info *hive,
  4580				       struct list_head *device_list_handle,
  4581				       bool *need_full_reset)
  4582	{
  4583		int i, r = 0;
  4584	
  4585		for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
  4586			struct amdgpu_ring *ring = adev->rings[i];
  4587			int ret = 0;
  4588			struct drm_sched_job *s_job;
  4589	
  4590			if (!ring || !ring->sched.thread)
  4591				continue;
  4592	
  4593			s_job = list_first_entry_or_null(&ring->sched.pending_list,
  4594					struct drm_sched_job, list);
  4595			if (s_job == NULL)
  4596				continue;
  4597	
  4598			/* clear job's guilty and depend the folowing step to decide the real one */
  4599			drm_sched_reset_karma(s_job);
  4600			drm_sched_resubmit_jobs_ext(&ring->sched, 1);
  4601	
  4602			ret = dma_fence_wait_timeout(s_job->s_fence->parent, false, ring->sched.timeout);
  4603			if (ret == 0) { /* timeout */
  4604				DRM_ERROR("Found the real bad job! ring:%s, job_id:%llx\n",
  4605							ring->sched.name, s_job->id);
  4606	
  4607				/* set guilty */
  4608				drm_sched_increase_karma(s_job);
  4609	retry:
  4610				/* do hw reset */
  4611				if (amdgpu_sriov_vf(adev)) {
  4612					amdgpu_virt_fini_data_exchange(adev);
  4613					r = amdgpu_device_reset_sriov(adev, false);
  4614					if (r)
  4615						adev->asic_reset_res = r;
  4616				} else {
  4617					r  = amdgpu_do_asic_reset(hive, device_list_handle,
  4618							need_full_reset, false);
  4619					if (r && r == -EAGAIN)
  4620						goto retry;
  4621				}
  4622	
  4623				/*
  4624				 * add reset counter so that the following
  4625				 * resubmitted job could flush vmid
  4626				 */
  4627				atomic_inc(&adev->gpu_reset_counter);
  4628				continue;
  4629			}
  4630	
  4631			/* got the hw fence, signal finished fence */
  4632			atomic_dec(ring->sched.score);
  4633			dma_fence_get(&s_job->s_fence->finished);
  4634			dma_fence_signal(&s_job->s_fence->finished);
  4635			dma_fence_put(&s_job->s_fence->finished);
  4636	
  4637			/* remove node from list and free the job */
  4638			spin_lock(&ring->sched.job_list_lock);
  4639			list_del_init(&s_job->list);
  4640			spin_unlock(&ring->sched.job_list_lock);
  4641			ring->sched.ops->free_job(s_job);
  4642		}
  4643	}
  4644	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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