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Commit a1aa682f authored by Tingwei Zhang's avatar Tingwei Zhang
Browse files

coresight: tmc: Correct the status for ETR disable 



Mode in etr drvdata is not reset to CS_MODE_DISABLED in USB case.
In this case, following ETR enablement on mem mode won't work.  Set
the mode status correctly.  Coresight source should be disabled
in reset case and echo 0 > enable_source case.  Decrease the refcnt
to disable the source correctly.

Change-Id: I6f88efcd22ef56dc12f85a821a1dc004b4dda3d8
Signed-off-by: default avatarTingwei Zhang <tingwei@codeaurora.org>
parent 315ed7f6

drivers/hwtracing/coresight/coresight-tmc-etr.c

+1 −0
Original line number Diff line number Diff line
@@ -1017,6 +1017,7 @@ static void tmc_disable_etr_sink(struct coresight_device *csdev) 
			spin_unlock_irqrestore(&drvdata->spinlock, flags);

			tmc_etr_bam_disable(drvdata);

			usb_qdss_close(drvdata->usbch);

			drvdata->mode = CS_MODE_DISABLED;

			goto out;

		} else {

			tmc_etr_disable_hw(drvdata);

drivers/hwtracing/coresight/coresight.c

+2 −0
Original line number Diff line number Diff line
@@ -812,6 +812,7 @@ static ssize_t enable_source_store(struct device *dev, 
		if (ret)

			return ret;

	} else {

		atomic_set(csdev->refcnt, 1);

		coresight_disable(csdev);

	}
@@ -1058,6 +1059,7 @@ static ssize_t reset_source_sink_store(struct bus_type *bus, 
		csdev = coresight_get_source(cspath->path);

		if (!csdev)

			continue;

		atomic_set(csdev->refcnt, 1);

		__coresight_disable(csdev);

	}