linux-kernel - [PATCH 4/5] coresight: release reference taken by 'bus_find

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Date:	Thu, 14 Jan 2016 11:57:59 -0700
From:	Mathieu Poirier <mathieu.poirier@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	Mathieu Poirier <mathieu.poirier@...aro.org>
Subject: [PATCH 4/5] coresight: release reference taken by 'bus_find_device()'

The reference count taken by function bus_find_device() needs
to be released if a child device is found, something this patch
is adding.

Reported-by: Rabin Vincent <rabin@....in>
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
 drivers/hwtracing/coresight/coresight.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 8872db4410eb..a35ca54a76c9 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -570,6 +570,8 @@ static void coresight_fixup_device_conns(struct coresight_device *csdev)
 
 		if (dev) {
 			conn->child_dev = to_coresight_device(dev);
+			/* and put reference from 'bus_find_device()' */
+			put_device(dev);
 		} else {
 			csdev->orphan = true;
 			conn->child_dev = NULL;
-- 
2.1.4