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drm/amdgpu: add check for callback 

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

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian K?nig <christian.koenig@amd.com>
This commit is contained in:
Chunming Zhou 2015-07-28 16:11:52 +08:00 committed by Alex Deucher
parent 02b9f0bfd4
commit afe1008149
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
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@ -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);