Merge "Rest replicator registers when enabling it first time" (82b466e5) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/hwtracing/coresight/coresight-replicator.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -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,