[PATCH v7 1/3] drm/imagination: Release KCCB slot on error path in pvr_queue_run_job()

[Alexandru Dadu <alexandru.dadu@imgtec.com>]

Add an error path to pvr_queue_run_job() instead of just a warning and
release the KCCB in that path.

Signed-off-by: Alexandru Dadu <alexandru.dadu@imgtec.com>
---
 drivers/gpu/drm/imagination/pvr_queue.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/imagination/pvr_queue.c b/drivers/gpu/drm/imagination/pvr_queue.c
index 24a8645aa913..8dd87192fabc 100644
--- a/drivers/gpu/drm/imagination/pvr_queue.c
+++ b/drivers/gpu/drm/imagination/pvr_queue.c
@@ -767,17 +767,19 @@ static struct dma_fence *pvr_queue_run_job(struct drm_sched_job *sched_job)
 		    (job->type != DRM_PVR_JOB_TYPE_GEOMETRY ||
 		     job->paired_job->type != DRM_PVR_JOB_TYPE_FRAGMENT ||
 		     job->hwrt != job->paired_job->hwrt ||
-		     job->ctx != job->paired_job->ctx)))
-		return ERR_PTR(-EINVAL);
+		     job->ctx != job->paired_job->ctx))) {
+		err = -EINVAL;
+		goto err_release;
+	}
 
 	err = pvr_job_get_pm_ref(job);
 	if (WARN_ON(err))
-		return ERR_PTR(err);
+		goto err_release;
 
 	if (job->paired_job) {
 		err = pvr_job_get_pm_ref(job->paired_job);
 		if (WARN_ON(err))
-			return ERR_PTR(err);
+			goto err_release;
 	}
 
 	/* Submit our job to the CCCB */
@@ -814,7 +816,14 @@ static struct dma_fence *pvr_queue_run_job(struct drm_sched_job *sched_job)
 		trace_pvr_job_submit_fw(job);
 	}
 
+	if (WARN_ON(err))
+		goto err_release;
+
 	return dma_fence_get(job->done_fence);
+
+err_release:
+	pvr_kccb_release_slot(pvr_dev);
+	return ERR_PTR(err);
 }
 
 static void pvr_queue_stop(struct pvr_queue *queue, struct pvr_job *bad_job)

-- 
2.43.0