linux-kernel - [PATCH v6 1/3] coresight/etm4: fix missing disable active config

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Message-Id: <20250514161951.3427590-2-yeoreum.yun@arm.com>
Date: Wed, 14 May 2025 17:19:49 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
To: suzuki.poulose@....com,
	mike.leach@...aro.org,
	james.clark@...aro.org,
	alexander.shishkin@...ux.intel.com,
	leo.yan@....com
Cc: coresight@...ts.linaro.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Yeoreum Yun <yeoreum.yun@....com>
Subject: [PATCH v6 1/3] coresight/etm4: fix missing disable active config

When etm4 device is disabled via sysfs, it should disable its active
count.

Fixes: 7ebd0ec6cf94 ("coresight: configfs: Allow configfs to activate configuration")
Signed-off-by: Yeoreum Yun <yeoreum.yun@....com>
Reviewed-by: Leo Yan <leo.yan@....com>
---
 drivers/hwtracing/coresight/coresight-etm4x-core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 2b8f10463840..f008f87f0801 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -1020,6 +1020,9 @@ static void etm4_disable_sysfs(struct coresight_device *csdev)
 	smp_call_function_single(drvdata->cpu, etm4_disable_hw, drvdata, 1);
 
 	raw_spin_unlock(&drvdata->spinlock);
+
+	cscfg_csdev_disable_active_config(csdev);
+
 	cpus_read_unlock();
 
 	/*
-- 
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}