From: Mathieu Poirier <mathieu.poirier@linaro.org>
Date: Tue, 2 Feb 2016 21:13:57 +0000 (-0700)
Subject: coresight: coresight_unregister() function cleanup
X-Git-Tag: next-20160210~17^2~48
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fae54158792aec705620bdc3938d342879204f0c;p=karo-tx-linux.git

coresight: coresight_unregister() function cleanup

In its current form the code never frees csdev->refcnt allocated
in coresight_register().  There is also a problem with csdev->conns
that is freed before device_unregister() rather than in the device
release function.

This patch addresses both issues by moving kfree(csdev->conns) to
coresight_device_release() and freeing csdev->refcnt, also in
the same function.

Reported-by: Rabin Vincent <rabin@rab.in>
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 41b42018b660..8872db4410eb 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -481,6 +481,8 @@ static void coresight_device_release(struct device *dev)
 {
 	struct coresight_device *csdev = to_coresight_device(dev);
 
+	kfree(csdev->conns);
+	kfree(csdev->refcnt);
 	kfree(csdev);
 }
 
@@ -713,7 +715,6 @@ EXPORT_SYMBOL_GPL(coresight_register);
 
 void coresight_unregister(struct coresight_device *csdev)
 {
-	kfree(csdev->conns);
 	device_unregister(&csdev->dev);
 }
 EXPORT_SYMBOL_GPL(coresight_unregister);