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-rw-r--r--drivers/gpu/drm/scheduler/sched_main.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 2f1b514ff4cf..8451f3884a46 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -593,6 +593,9 @@ static void drm_sched_job_timedout(struct work_struct *work)
* callers responsibility to release it manually if it's not part of the
* pending list any more.
*
+ * This function is typically used for reset recovery (see the docu of
+ * drm_sched_backend_ops.timedout_job() for details). Do not call it for
+ * scheduler teardown, i.e., before calling drm_sched_fini().
*/
void drm_sched_stop(struct drm_gpu_scheduler *sched, struct drm_sched_job *bad)
{
@@ -665,7 +668,6 @@ void drm_sched_stop(struct drm_gpu_scheduler *sched, struct drm_sched_job *bad)
*/
cancel_delayed_work(&sched->work_tdr);
}
-
EXPORT_SYMBOL(drm_sched_stop);
/**
@@ -674,6 +676,10 @@ EXPORT_SYMBOL(drm_sched_stop);
* @sched: scheduler instance
* @errno: error to set on the pending fences
*
+ * This function is typically used for reset recovery (see the docu of
+ * drm_sched_backend_ops.timedout_job() for details). Do not call it for
+ * scheduler startup. The scheduler itself is fully operational after
+ * drm_sched_init() succeeded.
*/
void drm_sched_start(struct drm_gpu_scheduler *sched, int errno)
{