coresight: etm: perf: Fix warning caused by etm_setup_aux failure
[ Upstream commit5.4-rM2-2.2.x-imx-squashed716f5652a1
] When coresight_build_path() fails on all the cpus, etm_setup_aux calls etm_free_aux() to free allocated event_data. WARN_ON(cpumask_empty(mask) will be triggered since cpu mask is empty. Check event_data->snk_config is not NULL first to avoid this warning. Fixes:f5200aa983
("coresight: perf: Refactor function free_event_data()") Reviewed-by: Mike Leach <mike.leach@linaro.org> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Tingwei Zhang <tingwei@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20200928163513.70169-9-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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56365dbb3e
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da012618c5
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@ -126,10 +126,10 @@ static void free_sink_buffer(struct etm_event_data *event_data)
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cpumask_t *mask = &event_data->mask;
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struct coresight_device *sink;
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if (WARN_ON(cpumask_empty(mask)))
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if (!event_data->snk_config)
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return;
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if (!event_data->snk_config)
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if (WARN_ON(cpumask_empty(mask)))
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return;
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cpu = cpumask_first(mask);
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