[PATCH 2/4] drm/imagination: Don't timeout job if its fence has been signaled

[Brajesh Gupta <brajesh.gupta@imgtec.com>]

Check for job's fence in timedout handler and report NO HANG if its
is signaled

Signed-off-by: Brajesh Gupta <brajesh.gupta@imgtec.com>
---
 drivers/gpu/drm/imagination/pvr_queue.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/imagination/pvr_queue.c b/drivers/gpu/drm/imagination/pvr_queue.c
index d10a13173f0f..073478919b22 100644
--- a/drivers/gpu/drm/imagination/pvr_queue.c
+++ b/drivers/gpu/drm/imagination/pvr_queue.c
@@ -851,7 +851,8 @@ static void pvr_queue_start(struct pvr_queue *queue)
  * the scheduler, and re-assign parent fences in the middle.
  *
  * Return:
- *  * DRM_GPU_SCHED_STAT_RESET.
+ *  * Fence signaled : DRM_GPU_SCHED_STAT_NO_HANG
+ *  * otherwise      : DRM_GPU_SCHED_STAT_RESET
  */
 static enum drm_gpu_sched_stat
 pvr_queue_timedout_job(struct drm_sched_job *s_job)
@@ -862,6 +863,10 @@ pvr_queue_timedout_job(struct drm_sched_job *s_job)
 	struct pvr_job *job;
 	u32 job_count = 0;
 
+	/* If fence is already signaled then return no hang */
+	if (dma_fence_is_signaled(s_job->s_fence->parent))
+		return DRM_GPU_SCHED_STAT_NO_HANG;
+
 	dev_err(sched->dev, "Job timeout\n");
 
 	/* Before we stop the scheduler, make sure the queue is out of any list, so

-- 
2.43.0