Revert "drm/scheduler: Job timeout handler returns status (v3)"

This reverts commit c10983e1.

This commit is not meant for drm-misc-next-fixes, and was accidentally
cherry picked over.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_job.c

@@ -28,7 +28,7 @@
 #include "amdgpu.h"
 #include "amdgpu_trace.h"
 
-static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
+static void amdgpu_job_timedout(struct drm_sched_job *s_job)
 {
 	struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
 	struct amdgpu_job *job = to_amdgpu_job(s_job);
@@ -41,7 +41,7 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
 	    amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) {
 		DRM_ERROR("ring %s timeout, but soft recovered\n",
 			  s_job->sched->name);
-		return DRM_GPU_SCHED_STAT_NOMINAL;
+		return;
 	}
 
 	amdgpu_vm_get_task_info(ring->adev, job->pasid, &ti);
@@ -53,12 +53,10 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
 
 	if (amdgpu_device_should_recover_gpu(ring->adev)) {
 		amdgpu_device_gpu_recover(ring->adev, job);
-		return DRM_GPU_SCHED_STAT_NOMINAL;
 	} else {
 		drm_sched_suspend_timeout(&ring->sched);
 		if (amdgpu_sriov_vf(adev))
 			adev->virt.tdr_debug = true;
-		return DRM_GPU_SCHED_STAT_NOMINAL;
 	}
 }
 

drivers/gpu/drm/etnaviv/etnaviv_sched.c

@@ -82,8 +82,7 @@ static struct dma_fence *etnaviv_sched_run_job(struct drm_sched_job *sched_job)
 	return fence;
 }
 
-static enum drm_gpu_sched_stat etnaviv_sched_timedout_job(struct drm_sched_job
-							  *sched_job)
+static void etnaviv_sched_timedout_job(struct drm_sched_job *sched_job)
 {
 	struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
 	struct etnaviv_gpu *gpu = submit->gpu;
@@ -121,13 +120,9 @@ static enum drm_gpu_sched_stat etnaviv_sched_timedout_job(struct drm_sched_job
 
 	drm_sched_resubmit_jobs(&gpu->sched);
 
-	drm_sched_start(&gpu->sched, true);
-	return DRM_GPU_SCHED_STAT_NOMINAL;
-
 out_no_timeout:
 	/* restart scheduler after GPU is usable again */
 	drm_sched_start(&gpu->sched, true);
-	return DRM_GPU_SCHED_STAT_NOMINAL;
 }
 
 static void etnaviv_sched_free_job(struct drm_sched_job *sched_job)

drivers/gpu/drm/lima/lima_sched.c

@@ -415,7 +415,7 @@ static void lima_sched_build_error_task_list(struct lima_sched_task *task)
 	mutex_unlock(&dev->error_task_list_lock);
 }
 
-static enum drm_gpu_sched_stat lima_sched_timedout_job(struct drm_sched_job *job)
+static void lima_sched_timedout_job(struct drm_sched_job *job)
 {
 	struct lima_sched_pipe *pipe = to_lima_pipe(job->sched);
 	struct lima_sched_task *task = to_lima_task(job);
@@ -449,8 +449,6 @@ static enum drm_gpu_sched_stat lima_sched_timedout_job(struct drm_sched_job *job
 
 	drm_sched_resubmit_jobs(&pipe->base);
 	drm_sched_start(&pipe->base, true);
-
-	return DRM_GPU_SCHED_STAT_NOMINAL;
 }
 
 static void lima_sched_free_job(struct drm_sched_job *job)

drivers/gpu/drm/panfrost/panfrost_job.c

@@ -432,8 +432,7 @@ static void panfrost_scheduler_start(struct panfrost_queue_state *queue)
 	mutex_unlock(&queue->lock);
 }
 
-static enum drm_gpu_sched_stat panfrost_job_timedout(struct drm_sched_job
-						     *sched_job)
+static void panfrost_job_timedout(struct drm_sched_job *sched_job)
 {
 	struct panfrost_job *job = to_panfrost_job(sched_job);
 	struct panfrost_device *pfdev = job->pfdev;
@@ -444,7 +443,7 @@ static enum drm_gpu_sched_stat panfrost_job_timedout(struct drm_sched_job
 	 * spurious. Bail out.
 	 */
 	if (dma_fence_is_signaled(job->done_fence))
-		return DRM_GPU_SCHED_STAT_NOMINAL;
+		return;
 
 	dev_err(pfdev->dev, "gpu sched timeout, js=%d, config=0x%x, status=0x%x, head=0x%x, tail=0x%x, sched_job=%p",
 		js,
@@ -456,13 +455,11 @@ static enum drm_gpu_sched_stat panfrost_job_timedout(struct drm_sched_job
 
 	/* Scheduler is already stopped, nothing to do. */
 	if (!panfrost_scheduler_stop(&pfdev->js->queue[js], sched_job))
-		return DRM_GPU_SCHED_STAT_NOMINAL;
+		return;
 
 	/* Schedule a reset if there's no reset in progress. */
 	if (!atomic_xchg(&pfdev->reset.pending, 1))
 		schedule_work(&pfdev->reset.work);
-
-	return DRM_GPU_SCHED_STAT_NOMINAL;
 }
 
 static const struct drm_sched_backend_ops panfrost_sched_ops = {

drivers/gpu/drm/scheduler/sched_main.c

@@ -527,7 +527,7 @@ void drm_sched_start(struct drm_gpu_scheduler *sched, bool full_recovery)
 EXPORT_SYMBOL(drm_sched_start);
 
 /**
- * drm_sched_resubmit_jobs - helper to relaunch jobs from the pending list
+ * drm_sched_resubmit_jobs - helper to relunch job from pending ring list
  *
  * @sched: scheduler instance
  *
@@ -561,6 +561,8 @@ void drm_sched_resubmit_jobs(struct drm_gpu_scheduler *sched)
 		} else {
 			s_job->s_fence->parent = fence;
 		}
+
+
 	}
 }
 EXPORT_SYMBOL(drm_sched_resubmit_jobs);

drivers/gpu/drm/v3d/v3d_sched.c

@@ -259,7 +259,7 @@ v3d_cache_clean_job_run(struct drm_sched_job *sched_job)
 	return NULL;
 }
 
-static enum drm_gpu_sched_status
+static void
 v3d_gpu_reset_for_timeout(struct v3d_dev *v3d, struct drm_sched_job *sched_job)
 {
 	enum v3d_queue q;
@@ -285,8 +285,6 @@ v3d_gpu_reset_for_timeout(struct v3d_dev *v3d, struct drm_sched_job *sched_job)
 	}
 
 	mutex_unlock(&v3d->reset_lock);
-
-	return DRM_GPU_SCHED_STAT_NOMINAL;
 }
 
 /* If the current address or return address have changed, then the GPU
@@ -294,7 +292,7 @@ v3d_gpu_reset_for_timeout(struct v3d_dev *v3d, struct drm_sched_job *sched_job)
  * could fail if the GPU got in an infinite loop in the CL, but that
  * is pretty unlikely outside of an i-g-t testcase.
  */
-static enum drm_task_status
+static void
 v3d_cl_job_timedout(struct drm_sched_job *sched_job, enum v3d_queue q,
 		    u32 *timedout_ctca, u32 *timedout_ctra)
 {
@@ -306,39 +304,39 @@ v3d_cl_job_timedout(struct drm_sched_job *sched_job, enum v3d_queue q,
 	if (*timedout_ctca != ctca || *timedout_ctra != ctra) {
 		*timedout_ctca = ctca;
 		*timedout_ctra = ctra;
-		return DRM_GPU_SCHED_STAT_NOMINAL;
+		return;
 	}
 
-	return v3d_gpu_reset_for_timeout(v3d, sched_job);
+	v3d_gpu_reset_for_timeout(v3d, sched_job);
 }
 
-static enum drm_task_status
+static void
 v3d_bin_job_timedout(struct drm_sched_job *sched_job)
 {
 	struct v3d_bin_job *job = to_bin_job(sched_job);
 
-	return v3d_cl_job_timedout(sched_job, V3D_BIN,
-				   &job->timedout_ctca, &job->timedout_ctra);
+	v3d_cl_job_timedout(sched_job, V3D_BIN,
+			    &job->timedout_ctca, &job->timedout_ctra);
 }
 
-static enum drm_task_status
+static void
 v3d_render_job_timedout(struct drm_sched_job *sched_job)
 {
 	struct v3d_render_job *job = to_render_job(sched_job);
 
-	return v3d_cl_job_timedout(sched_job, V3D_RENDER,
-				   &job->timedout_ctca, &job->timedout_ctra);
+	v3d_cl_job_timedout(sched_job, V3D_RENDER,
+			    &job->timedout_ctca, &job->timedout_ctra);
 }
 
-static enum drm_task_status
+static void
 v3d_generic_job_timedout(struct drm_sched_job *sched_job)
 {
 	struct v3d_job *job = to_v3d_job(sched_job);
 
-	return v3d_gpu_reset_for_timeout(job->v3d, sched_job);
+	v3d_gpu_reset_for_timeout(job->v3d, sched_job);
 }
 
-static enum drm_task_status
+static void
 v3d_csd_job_timedout(struct drm_sched_job *sched_job)
 {
 	struct v3d_csd_job *job = to_csd_job(sched_job);
@@ -350,10 +348,10 @@ v3d_csd_job_timedout(struct drm_sched_job *sched_job)
 	 */
 	if (job->timedout_batches != batches) {
 		job->timedout_batches = batches;
-		return DRM_GPU_SCHED_STAT_NOMINAL;
+		return;
 	}
 
-	return v3d_gpu_reset_for_timeout(v3d, sched_job);
+	v3d_gpu_reset_for_timeout(v3d, sched_job);
 }
 
 static const struct drm_sched_backend_ops v3d_bin_sched_ops = {

include/drm/gpu_scheduler.h

@@ -206,12 +206,6 @@ static inline bool drm_sched_invalidate_job(struct drm_sched_job *s_job,
 	return s_job && atomic_inc_return(&s_job->karma) > threshold;
 }
 
-enum drm_gpu_sched_stat {
-	DRM_GPU_SCHED_STAT_NONE, /* Reserve 0 */
-	DRM_GPU_SCHED_STAT_NOMINAL,
-	DRM_GPU_SCHED_STAT_ENODEV,
-};
-
 /**
  * struct drm_sched_backend_ops
  *
@@ -236,16 +230,10 @@ struct drm_sched_backend_ops {
 	struct dma_fence *(*run_job)(struct drm_sched_job *sched_job);
 
 	/**
-	 * @timedout_job: Called when a job has taken too long to execute,
-	 * to trigger GPU recovery.
-	 *
-	 * Return DRM_GPU_SCHED_STAT_NOMINAL, when all is normal,
-	 * and the underlying driver has started or completed recovery.
-	 *
-	 * Return DRM_GPU_SCHED_STAT_ENODEV, if the device is no longer
-	 * available, i.e. has been unplugged.
+         * @timedout_job: Called when a job has taken too long to execute,
+         * to trigger GPU recovery.
 	 */
-	enum drm_gpu_sched_stat (*timedout_job)(struct drm_sched_job *sched_job);
+	void (*timedout_job)(struct drm_sched_job *sched_job);
 
 	/**
          * @free_job: Called once the job's finished fence has been signaled