From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Yangtao Li <tiny.windzz@gmail.com>,
Sasha Levin <sashal@kernel.org>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 088/170] cpuidle: big.LITTLE: fix refcount leak
Date: Mon, 28 Jan 2019 11:10:38 -0500 [thread overview]
Message-ID: <20190128161200.55107-88-sashal@kernel.org> (raw)
In-Reply-To: <20190128161200.55107-1-sashal@kernel.org>
From: Yangtao Li <tiny.windzz@gmail.com>
[ Upstream commit 9456823c842f346c74265fcd98d008d87a7eb6f5 ]
of_find_node_by_path() acquires a reference to the node
returned by it and that reference needs to be dropped by its caller.
bl_idle_init() doesn't do that, so fix it.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/cpuidle/cpuidle-big_little.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/cpuidle/cpuidle-big_little.c b/drivers/cpuidle/cpuidle-big_little.c
index db2ede565f1a..b44476a1b7ad 100644
--- a/drivers/cpuidle/cpuidle-big_little.c
+++ b/drivers/cpuidle/cpuidle-big_little.c
@@ -167,6 +167,7 @@ static int __init bl_idle_init(void)
{
int ret;
struct device_node *root = of_find_node_by_path("/");
+ const struct of_device_id *match_id;
if (!root)
return -ENODEV;
@@ -174,7 +175,11 @@ static int __init bl_idle_init(void)
/*
* Initialize the driver just for a compliant set of machines
*/
- if (!of_match_node(compatible_machine_match, root))
+ match_id = of_match_node(compatible_machine_match, root);
+
+ of_node_put(root);
+
+ if (!match_id)
return -ENODEV;
if (!mcpm_is_available())
--
2.19.1
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parent reply other threads:[~2019-01-28 16:15 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20190128161200.55107-1-sashal@kernel.org>]
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