[PATCH v2 09/15] ARM: socfpga: fix a leaked reference by adding missing of_node_put

Wen Yang wen.yang99 at zte.com.cn
Tue Mar 5 03:34:00 PST 2019

The call to of_get_next_child returns a node pointer with refcount
incremented thus it must be explicitly decremented after the last

Detected by coccinelle with the following warnings:
./arch/arm/mach-socfpga/platsmp.c:93:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 85, but without a corresponding object release within this function.

Signed-off-by: Wen Yang <wen.yang99 at zte.com.cn>
Reviewed-by: Florian Fainelli <f.fainelli at gmail.com>
Cc: Dinh Nguyen <dinguyen at kernel.org>
Cc: Russell King <linux at armlinux.org.uk>
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
v2->v1: add a missing space between "adding" and "missing"

 arch/arm/mach-socfpga/platsmp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-socfpga/platsmp.c b/arch/arm/mach-socfpga/platsmp.c
index 0ee7677..55c2884 100644
--- a/arch/arm/mach-socfpga/platsmp.c
+++ b/arch/arm/mach-socfpga/platsmp.c
@@ -89,6 +89,7 @@ static void __init socfpga_smp_prepare_cpus(unsigned int max_cpus)
 	socfpga_scu_base_addr = of_iomap(np, 0);
+	of_node_put(np);
 	if (!socfpga_scu_base_addr)

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