Resource selector pair 0 is always implemented and reserved. As such
it should not be explicitly programmed.
Signed-off-by: Mathieu Poirier <mathieu.poir...@linaro.org>
---
drivers/hwtracing/coresight/coresight-etm4x.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c
b/drivers/hwtracing/coresight/coresight-etm4x.c
index 732ae12fca9b..d64192c29860 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -138,8 +138,11 @@ static int etm4_enable_hw(struct etmv4_drvdata *drvdata)
drvdata->base + TRCCNTVRn(i));
}
- /* Resource selector pair 0 is always implemented and reserved */
- for (i = 0; i < drvdata->nr_resource * 2; i++)
+ /*
+ * Resource selector pair 0 is always implemented and reserved. As
+ * such start at 2.
+ */
+ for (i = 2; i < drvdata->nr_resource * 2; i++)
writel_relaxed(config->res_ctrl[i],
drvdata->base + TRCRSCTLRn(i));
--
2.17.1
