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cpuidle: big.LITTLE: fix refcount leak

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[ 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>
This commit is contained in:
Yangtao Li 2018-12-10 11:26:41 -05:00 • committed by Greg Kroah-Hartman
parent e21e67ef6e
commit c4d10ceb95
1 changed files with 6 additions and 1 deletions
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7
drivers/cpuidle/cpuidle-big_little.c
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@ -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())