[1/2] drm/scheduler: Set sched->thread to NULL on failure

Submitted by Sharat Masetty on Nov. 2, 2018, 10:31 a.m.

Details

Message ID 1541154693-29623-1-git-send-email-smasetty@codeaurora.org
State New
Headers show
Series "Series without cover letter" ( rev: 1 ) in Freedreno

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Commit Message

Sharat Masetty Nov. 2, 2018, 10:31 a.m.
In cases where the scheduler instance is used as a base object of another
driver object, it's not clear if the driver can call scheduler cleanup on the
fail path. So, Set the sched->thread to NULL, so that the driver can safely
call drm_sched_fini() during cleanup.

Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
---
 drivers/gpu/drm/scheduler/sched_main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--
1.9.1

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diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index 44fe587..c993d10 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -594,7 +594,7 @@  int drm_sched_init(struct drm_gpu_scheduler *sched,
 		   long timeout,
 		   const char *name)
 {
-	int i;
+	int i, ret;
 	sched->ops = ops;
 	sched->hw_submission_limit = hw_submission;
 	sched->name = name;
@@ -615,8 +615,10 @@  int drm_sched_init(struct drm_gpu_scheduler *sched,
 	/* Each scheduler will run on a seperate kernel thread */
 	sched->thread = kthread_run(drm_sched_main, sched, sched->name);
 	if (IS_ERR(sched->thread)) {
+		ret = PTR_ERR(sched->thread);
+		sched->thread = NULL;
 		DRM_ERROR("Failed to create scheduler for %s.\n", name);
-		return PTR_ERR(sched->thread);
+		return ret;
 	}

 	return 0;