From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Wed, 9 May 2018 18:06:03 +0000 (-0600)
Subject: coresight: use put_device() instead of kfree()
X-Git-Tag: v4.18-rc1~135^2~40
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=a7082daac85231ddbb0502d777455756e4e3e69d;p=linux.git

coresight: use put_device() instead of kfree()

Never directly free @dev after calling device_register(), even
if it returned an error. Always use put_device() to give up the
reference initialized.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 389c4baeca9d..132dfbcd90c1 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -1026,8 +1026,10 @@ struct coresight_device *coresight_register(struct coresight_desc *desc)
 	dev_set_name(&csdev->dev, "%s", desc->pdata->name);
 
 	ret = device_register(&csdev->dev);
-	if (ret)
-		goto err_device_register;
+	if (ret) {
+		put_device(&csdev->dev);
+		goto err_kzalloc_csdev;
+	}
 
 	mutex_lock(&coresight_mutex);
 
@@ -1038,8 +1040,6 @@ struct coresight_device *coresight_register(struct coresight_desc *desc)
 
 	return csdev;
 
-err_device_register:
-	kfree(conns);
 err_kzalloc_conns:
 	kfree(refcnts);
 err_kzalloc_refcnts: