linux-kernel - [PATCH] arm64: spin-table: add missing of_node

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Message-Id: <1461115411-2843-1-git-send-email-yamada.masahiro@socionext.com>
Date:	Wed, 20 Apr 2016 10:23:31 +0900
From:	Masahiro Yamada <yamada.masahiro@...ionext.com>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	devicetree@...r.kernel.org, Mark Rutland <mark.rutland@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	linux-kernel@...r.kernel.org, Sudeep Holla <sudeep.holla@....com>,
	Will Deacon <will.deacon@....com>,
	Catalin Marinas <catalin.marinas@....com>
Subject: [PATCH] arm64: spin-table: add missing of_node_put()

Since of_get_cpu_node() increments refcount, the node should be put.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

 arch/arm64/kernel/smp_spin_table.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/kernel/smp_spin_table.c b/arch/arm64/kernel/smp_spin_table.c
index aef3605..18a71bc 100644
--- a/arch/arm64/kernel/smp_spin_table.c
+++ b/arch/arm64/kernel/smp_spin_table.c
@@ -52,6 +52,7 @@ static void write_pen_release(u64 val)
 static int smp_spin_table_cpu_init(unsigned int cpu)
 {
 	struct device_node *dn;
+	int ret;
 
 	dn = of_get_cpu_node(cpu, NULL);
 	if (!dn)
@@ -60,15 +61,15 @@ static int smp_spin_table_cpu_init(unsigned int cpu)
 	/*
 	 * Determine the address from which the CPU is polling.
 	 */
-	if (of_property_read_u64(dn, "cpu-release-addr",
-				 &cpu_release_addr[cpu])) {
+	ret = of_property_read_u64(dn, "cpu-release-addr",
+				   &cpu_release_addr[cpu]);
+	if (ret)
 		pr_err("CPU %d: missing or invalid cpu-release-addr property\n",
 		       cpu);
 
-		return -1;
-	}
+	of_node_put(dn);
 
-	return 0;
+	return ret;
 }
 
 static int smp_spin_table_cpu_prepare(unsigned int cpu)
-- 
1.9.1