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Merge "Rest replicator registers when enabling it first time"

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qctecmdr 2020-05-02 00:07:40 -07:00 • committed by Gerrit - the friendly Code Review server
commit 82b466e558
1 changed files with 16 additions and 0 deletions
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16
drivers/hwtracing/coresight/coresight-replicator.c
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@ -94,6 +94,18 @@ static int dynamic_replicator_enable(struct replicator_drvdata *drvdata,
return rc;
}
static bool is_replicator_disabled(struct coresight_device *csdev)
{
int i;
for (i = 0; i < csdev->pdata->nr_outport; i++) {
if (atomic_read(&csdev->refcnt[i]) > 0)
return false;
}
return true;
}
static int replicator_enable(struct coresight_device *csdev, int inport,
int outport)
{
@ -103,6 +115,10 @@ static int replicator_enable(struct coresight_device *csdev, int inport,
bool first_enable = false;
spin_lock_irqsave(&drvdata->spinlock, flags);
if (is_replicator_disabled(csdev))
dynamic_replicator_reset(drvdata);
if (atomic_read(&csdev->refcnt[outport]) == 0) {
if (drvdata->base)
rc = dynamic_replicator_enable(drvdata, inport,