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[5/6] coresight: etm3x: Release CLAIM tag when operated from perf

Message ID 1543603387-32645-6-git-send-email-mathieu.poirier@linaro.org
State Accepted
Commit 34e6c35638b95f6efa3f065a04950416ce4bec7f
Headers show
Series coresight: next v4.20-rc4 | expand

Commit Message

Mathieu Poirier Nov. 30, 2018, 6:43 p.m. UTC 
This patch deals with the release of the CLAIM tag when the ETM is
operated from perf.  Otherwise the tag is left asserted and subsequent
requests to use the device fail.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>

---
 drivers/hwtracing/coresight/coresight-etm3x.c | 1 +
 1 file changed, 1 insertion(+)

-- 
2.7.4
diff mbox series

Patch

diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c
index 6f30d52da9e4..9a63e87ea5f3 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x.c
@@ -601,6 +601,7 @@  static void etm_disable_perf(struct coresight_device *csdev)
 	 * power down the tracer.
 	 */
 	etm_set_pwrdwn(drvdata);
+	coresight_disclaim_device_unlocked(drvdata->base);
 
 	CS_LOCK(drvdata->base);
 }