[PATCH v10 4/8] coresight: etm3x: remove redundant cpu online check on etm_enable_sysfs()

[Yeoreum Yun <yeoreum.yun@arm.com>]

cpu online() check is done in coresight_validate_source_sysfs() already.
and smp_call_function_single() will fail when cpu is offline.

Therefore, remove redundant check in etm_enable_sysfs().

Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
---
 drivers/hwtracing/coresight/coresight-etm3x-core.c | 31 +++++++++-------------
 1 file changed, 13 insertions(+), 18 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c
index 7a1e183c0b48..14e0724a43a1 100644
--- a/drivers/hwtracing/coresight/coresight-etm3x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c
@@ -519,25 +519,20 @@ static int etm_enable_sysfs(struct coresight_device *csdev, struct coresight_pat
 	struct etm_enable_arg arg = { };
 	int ret;
 
-	/*
-	 * Configure the ETM only if the CPU is online.  If it isn't online
-	 * hw configuration will take place on the local CPU during bring up.
-	 */
-	if (cpu_online(drvdata->cpu)) {
-		arg.drvdata = drvdata;
-		arg.path = path;
-
-		raw_spin_lock(&drvdata->spinlock);
-		arg.config = drvdata->config;
-		raw_spin_unlock(&drvdata->spinlock);
-
-		ret = smp_call_function_single(drvdata->cpu,
-					       etm_enable_sysfs_smp_call, &arg, 1);
-		if (!ret)
-			ret = arg.rc;
-	} else {
+	arg.drvdata = drvdata;
+	arg.path = path;
+
+	raw_spin_lock(&drvdata->spinlock);
+	arg.config = drvdata->config;
+	raw_spin_unlock(&drvdata->spinlock);
+
+	ret = smp_call_function_single(drvdata->cpu,
+				       etm_enable_sysfs_smp_call, &arg, 1);
+
+	if (!ret)
+		ret = arg.rc;
+	else
 		ret = -ENODEV;
-	}
 
 	if (!ret)
 		dev_dbg(&csdev->dev, "ETM tracing enabled\n");

-- 
2.43.0