linux-kernel - drivers/gpu/drm/scheduler/sched_main.c:266: warning: Function parameter or member 'result' not described in 'drm_sched_job

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Date:   Fri, 3 Nov 2023 12:06:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     Danilo Krummrich <dakr@...hat.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Dave Airlie <airlied@...hat.com>
Subject: drivers/gpu/drm/scheduler/sched_main.c:266: warning: Function
 parameter or member 'result' not described in 'drm_sched_job_done'

Hi Danilo,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   431f1051884e38d2a5751e4731d69b2ff289ee56
commit: b88baab828713ce0b49b185444b2ee83bed373a8 drm/nouveau: implement new VM_BIND uAPI
date:   3 months ago
config: parisc-defconfig (https://download.01.org/0day-ci/archive/20231103/202311031154.zr7To6n0-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231103/202311031154.zr7To6n0-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311031154.zr7To6n0-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/scheduler/sched_main.c:266: warning: Function parameter or member 'result' not described in 'drm_sched_job_done'


vim +266 drivers/gpu/drm/scheduler/sched_main.c

08fb97de03aa22 Andrey Grodzovsky 2022-09-30  258  
71173e787cab9d Luben Tuikov      2020-12-03  259  /**
71173e787cab9d Luben Tuikov      2020-12-03  260   * drm_sched_job_done - complete a job
71173e787cab9d Luben Tuikov      2020-12-03  261   * @s_job: pointer to the job which is done
71173e787cab9d Luben Tuikov      2020-12-03  262   *
71173e787cab9d Luben Tuikov      2020-12-03  263   * Finish the job's fence and wake up the worker thread.
71173e787cab9d Luben Tuikov      2020-12-03  264   */
539f9ee4b52a8b Christian König   2023-04-17  265  static void drm_sched_job_done(struct drm_sched_job *s_job, int result)
71173e787cab9d Luben Tuikov      2020-12-03 @266  {
71173e787cab9d Luben Tuikov      2020-12-03  267  	struct drm_sched_fence *s_fence = s_job->s_fence;
71173e787cab9d Luben Tuikov      2020-12-03  268  	struct drm_gpu_scheduler *sched = s_fence->sched;
71173e787cab9d Luben Tuikov      2020-12-03  269  
71173e787cab9d Luben Tuikov      2020-12-03  270  	atomic_dec(&sched->hw_rq_count);
f2f12eb9c32bc7 Christian König   2021-02-02  271  	atomic_dec(sched->score);
71173e787cab9d Luben Tuikov      2020-12-03  272  
71173e787cab9d Luben Tuikov      2020-12-03  273  	trace_drm_sched_process_job(s_fence);
71173e787cab9d Luben Tuikov      2020-12-03  274  
71173e787cab9d Luben Tuikov      2020-12-03  275  	dma_fence_get(&s_fence->finished);
539f9ee4b52a8b Christian König   2023-04-17  276  	drm_sched_fence_finished(s_fence, result);
71173e787cab9d Luben Tuikov      2020-12-03  277  	dma_fence_put(&s_fence->finished);
71173e787cab9d Luben Tuikov      2020-12-03  278  	wake_up_interruptible(&sched->wake_up_worker);
71173e787cab9d Luben Tuikov      2020-12-03  279  }
71173e787cab9d Luben Tuikov      2020-12-03  280  

:::::: The code at line 266 was first introduced by commit
:::::: 71173e787cab9db4ca1fa6229477cb3d254bc285 drm/scheduler: Essentialize the job done callback

:::::: TO: Luben Tuikov <luben.tuikov@....com>
:::::: CC: Christian König <christian.koenig@....com>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki