[PATCH v2] drm/panthor: Fix the "done_fence is initialized" detection logic

[Boris Brezillon <boris.brezillon@collabora.com>]

After commit 541c8f2468b9 ("dma-buf: detach fence ops on signal v3"),
dma_fence::ops == NULL can't be used to check if the fence is initialized.
Use dma_fence_was_initialized() instead.

v2:
- Use dma_fence_was_initialized() instead of open-coding it

Cc: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Philipp Stanner <phasta@kernel.org>
Cc: Christian König <christian.koenig@amd.com>
Reported-by: Steven Price <steven.price@arm.com>
Reported-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Fixes: 541c8f2468b9 ("dma-buf: detach fence ops on signal v3")
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
---
 drivers/gpu/drm/panthor/panthor_sched.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c
index bd703a2904a1..c15941ebe07a 100644
--- a/drivers/gpu/drm/panthor/panthor_sched.c
+++ b/drivers/gpu/drm/panthor/panthor_sched.c
@@ -3915,7 +3915,7 @@ static void job_release(struct kref *ref)
 	if (job->base.s_fence)
 		drm_sched_job_cleanup(&job->base);
 
-	if (job->done_fence && job->done_fence->ops)
+	if (dma_fence_was_initialized(job->done_fence))
 		dma_fence_put(job->done_fence);
 	else
 		dma_fence_free(job->done_fence);
-- 
2.53.0