[PATCH 16/31] drm/amdgpu: add check for callback

[Alex Deucher]

From: Chunming Zhou <david1.zhou at amd.com>

it is possible that the callback isn't defined sometimes.

Signed-off-by: Chunming Zhou <david1.zhou at amd.com>
Reviewed-by: Christian K?nig <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 9ff4d27..c41360e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -137,7 +137,8 @@ static void amdgpu_job_work_func(struct work_struct *work)
 		container_of(work, struct amdgpu_cs_parser,
 			     job_work);
 	mutex_lock(&sched_job->job_lock);
-	sched_job->free_job(sched_job);
+	if (sched_job->free_job)
+		sched_job->free_job(sched_job);
 	mutex_unlock(&sched_job->job_lock);
 	/* after processing job, free memory */
 	kfree(sched_job);
-- 
1.8.3.1