[PATCH v2] soc: bcm: brcmstb: Don't leak device tree node reference

From: Yangtao Li <tiny.windzz@gmail.com>
To: computersforpeace@gmail.com, gregory.0xf0@gmail.com,
	f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com,
	treding@nvidia.com, olof@lixom.net, arnd@arndb.de
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Yangtao Li <tiny.windzz@gmail.com>
Subject: [PATCH v2] soc: bcm: brcmstb: Don't leak device tree node reference
Date: Sat, 24 Nov 2018 09:52:23 -0500	[thread overview]
Message-ID: <20181124145223.29208-1-tiny.windzz@gmail.com> (raw)

of_find_node_by_path() acquires a reference to the node returned by it
and that reference needs to be dropped by its caller. soc_is_brcmstb()
doesn't do that, so fix it.

[treding: slightly rewrite to avoid inline comparison]

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
---
Changes in v2:
-update changelog
-slightly rewrite to avoid inline comparison
---
 drivers/soc/bcm/brcmstb/common.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/bcm/brcmstb/common.c b/drivers/soc/bcm/brcmstb/common.c
index 14185451901d..bf9123f727e8 100644
--- a/drivers/soc/bcm/brcmstb/common.c
+++ b/drivers/soc/bcm/brcmstb/common.c
@@ -31,13 +31,17 @@ static const struct of_device_id brcmstb_machine_match[] = {
 
 bool soc_is_brcmstb(void)
 {
+	const struct of_device_id *match;
 	struct device_node *root;
 
 	root = of_find_node_by_path("/");
 	if (!root)
 		return false;
 
-	return of_match_node(brcmstb_machine_match, root) != NULL;
+	match = of_match_node(brcmstb_machine_match, root);
+	of_node_put(root);
+
+	return match != NULL;
 }
 
 u32 brcmstb_get_family_id(void)
-- 
2.17.0

