[PATCH v2] ARM: milbeaut: Fix possible device node reference leak

From: Yi Wang
Date: Fri Jul 24 2020 - 20:13:26 EST

From: Liao Pingfang <liao.pingfang@xxxxxxxxxx>

The variable np in function m10v_smp_init takes the return value
of of_find_compatible_node, which gets a node but does not put it. If
this node is not put it may cause a memory leak. Hence put np after its
life has been exhausted.

Signed-off-by: Liao Pingfang <liao.pingfang@xxxxxxxxxx>
Signed-off-by: Yi Wang <wang.yi59@xxxxxxxxxx>
Changes in v2: improve the subject and description of this commit.

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

diff --git a/arch/arm/mach-milbeaut/platsmp.c b/arch/arm/mach-milbeaut/platsmp.c
index 3ea880f..1f1ff21 100644
--- a/arch/arm/mach-milbeaut/platsmp.c
+++ b/arch/arm/mach-milbeaut/platsmp.c
@@ -53,6 +53,7 @@ static void m10v_smp_init(unsigned int max_cpus)

m10v_smp_base = of_iomap(np, 0);
+ of_node_put(np);
if (!m10v_smp_base)