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coresight: perf: Disable trace path upon source error

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We enable the trace path, before activating the source.
If we fail to enable the source, we must disable the path
to make sure it is available for another session.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Suzuki K Poulose 2018-09-20 13:17:50 -06:00 committed by Greg Kroah-Hartman
parent f9d81a657b
commit 4f8ef21007
1 changed files with 3 additions and 1 deletions
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4
drivers/hwtracing/coresight/coresight-etm-perf.c
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@ -317,11 +317,13 @@ static void etm_event_start(struct perf_event *event, int flags)
/* Finally enable the tracer */
if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF))
goto fail_end_stop;
goto fail_disable_path;
out:
return;
fail_disable_path:
coresight_disable_path(path);
fail_end_stop:
perf_aux_output_flag(handle, PERF_AUX_FLAG_TRUNCATED);
perf_aux_output_end(handle, 0);