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authorMathieu Poirier <mathieu.poirier@linaro.org>2016-02-18 03:51:53 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-21 01:11:01 +0300
commit47cd066cd00a65902ee3bd57da5bd395cb83aff9 (patch)
tree13ccec7a3a659c9437adce8ce1b2d1a071f1bb3c /drivers/hwtracing
parent22fd532eaa0c24d86e23d8e9e3b7feac4a8cac80 (diff)
downloadlinux-47cd066cd00a65902ee3bd57da5bd395cb83aff9.tar.xz
coresight: etm3x: set progbit to stop trace collection
There is no need to use the event enable's "always false" event to stop trace collection. For that purpose setting the programming bit (ETMCR:10) is enough. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/coresight/coresight-etm3x.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm3x.c b/drivers/hwtracing/coresight/coresight-etm3x.c
index e16501b41ed8..447459969cb5 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x.c
@@ -398,9 +398,6 @@ static void etm_disable_hw(void *info)
CS_UNLOCK(drvdata->base);
etm_set_prog(drvdata);
- /* Program trace enable to low by using always false event */
- etm_writel(drvdata, ETM_HARD_WIRE_RES_A | ETM_EVENT_NOT_A, ETMTEEVR);
-
/* Read back sequencer and counters for post trace analysis */
config->seq_curr_state = (etm_readl(drvdata, ETMSQR) & ETM_SQR_MASK);