linux-kernel - [PATCH v2] csky: Don't leak device tree node reference

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Message-Id: <20181227174551.7564-1-tiny.windzz@gmail.com>
Date:   Thu, 27 Dec 2018 12:45:51 -0500
From:   Yangtao Li <tiny.windzz@...il.com>
To:     guoren@...nel.org, arnd@...db.de
Cc:     linux-kernel@...r.kernel.org, Yangtao Li <tiny.windzz@...il.com>
Subject: [PATCH v2] csky: Don't leak device tree node reference

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

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 arch/csky/kernel/smp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/csky/kernel/smp.c b/arch/csky/kernel/smp.c
index 36ebaf9834e1..74d627300c55 100644
--- a/arch/csky/kernel/smp.c
+++ b/arch/csky/kernel/smp.c
@@ -138,7 +138,7 @@ void __init setup_smp(void)
 	struct device_node *node = NULL;
 	int cpu;
 
-	while ((node = of_find_node_by_type(node, "cpu"))) {
+	for_each_of_cpu_node(node) {
 		if (!of_device_is_available(node))
 			continue;
 
-- 
2.17.0