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authorDmitry Osipenko <digetx@gmail.com>2018-08-07 16:07:12 +0300
committerThierry Reding <treding@nvidia.com>2019-02-07 18:30:58 +0100
commit5d6f043685fed86153ea6aeadd098a11267f58ef (patch)
tree95bf9626d6bc4bf13de511d4606908eb5a0e0db4
parente8bad659381e9d63164f61e3bdf37e1c12274016 (diff)
gpu: host1x: Don't complete a completed job
There is a chance that the last job has been completed at the time of CDMA timeout handler invocation. In this case there is no need to complete the completed job. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
-rw-r--r--drivers/gpu/host1x/cdma.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c
index 2314f37cb735..7556e0efd35a 100644
--- a/drivers/gpu/host1x/cdma.c
+++ b/drivers/gpu/host1x/cdma.c
@@ -383,7 +383,7 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
{
struct host1x *host1x = cdma_to_host1x(cdma);
u32 restart_addr, syncpt_incrs, syncpt_val;
- struct host1x_job *job = NULL;
+ struct host1x_job *job;
syncpt_val = host1x_syncpt_load(cdma->timeout.syncpt);
@@ -402,11 +402,16 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
list_for_each_entry(job, &cdma->sync_queue, list) {
if (syncpt_val < job->syncpt_end)
- break;
+ goto syncpt_incr;
host1x_job_dump(dev, job);
}
+ /* all jobs have been completed */
+ job = NULL;
+
+syncpt_incr:
+
/*
* Increment with CPU the remaining syncpts of a partially executed job.
*
@@ -419,16 +424,16 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
* modified NOP-ed PB slots). This lets things appear to have completed
* properly for this buffer and resources are freed.
*/
-
- dev_dbg(dev, "%s: perform CPU incr on pending buffers\n", __func__);
-
- if (!list_empty(&cdma->sync_queue))
+ if (job)
restart_addr = job->first_get;
else
restart_addr = cdma->last_pos;
/* do CPU increments for the remaining syncpts */
if (job) {
+ dev_dbg(dev, "%s: perform CPU incr on pending buffers\n",
+ __func__);
+
/* won't need a timeout when replayed */
job->timeout = 0;
@@ -441,9 +446,10 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
host1x_hw_cdma_timeout_cpu_incr(host1x, cdma, job->first_get,
syncpt_incrs, job->syncpt_end,
job->num_slots);
- }
- dev_dbg(dev, "%s: finished sync_queue modification\n", __func__);
+ dev_dbg(dev, "%s: finished sync_queue modification\n",
+ __func__);
+ }
/* roll back DMAGET and start up channel again */
host1x_hw_cdma_resume(host1x, cdma, restart_addr);