[PATCH v6 03/14] gpu: host1x: Add job release callback

[Mikko Perttunen <mperttunen@nvidia.com>]

Add a callback field to the job structure, to be called just before
the job is to be freed. This allows the job's submitter to clean
up any of its own state, like decrement runtime PM refcounts.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
---
 drivers/gpu/host1x/job.c | 3 +++
 include/linux/host1x.h   | 4 ++++
 2 files changed, 7 insertions(+)

diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c
index 8f59b34672c2..09097e19c0d0 100644
--- a/drivers/gpu/host1x/job.c
+++ b/drivers/gpu/host1x/job.c
@@ -79,6 +79,9 @@ static void job_free(struct kref *ref)
 {
 	struct host1x_job *job = container_of(ref, struct host1x_job, ref);
 
+	if (job->release)
+		job->release(job);
+
 	if (job->waiter)
 		host1x_intr_put_ref(job->syncpt->host, job->syncpt->id,
 				    job->waiter, false);
diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index 98dfb72e6c77..432125804208 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -265,6 +265,10 @@ struct host1x_job {
 
 	/* Fast-forward syncpoint increments on job timeout */
 	bool syncpt_recovery;
+
+	/* Callback called when job is freed */
+	void (*release)(struct host1x_job *job);
+	void *user_data;
 };
 
 struct host1x_job *host1x_job_alloc(struct host1x_channel *ch,
-- 
2.30.1