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 <[email protected]> Reviewed-by: Suzuki K Poulose <[email protected]> --- drivers/hwtracing/coresight/coresight-etm3x.c | 1 + 1 file changed, 1 insertion(+) 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); } -- 2.7.4
