[PATCH] powerpc/512x: Hold the reference returned by of_find_compatible_node

[Liang He]

In mpc5121_clk_provide_migration_support(), we need to hold the
reference returned by of_find_compatible_node() and use it to call
of_node_put for refcount balance.

Signed-off-by: Liang He <windhl at 126.com>
---
 arch/powerpc/platforms/512x/clock-commonclk.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/platforms/512x/clock-commonclk.c b/arch/powerpc/platforms/512x/clock-commonclk.c
index ca475462e95b..42abeba4f698 100644
--- a/arch/powerpc/platforms/512x/clock-commonclk.c
+++ b/arch/powerpc/platforms/512x/clock-commonclk.c
@@ -950,7 +950,7 @@ static void __init mpc5121_clk_register_of_provider(struct device_node *np)
  */
 static void __init mpc5121_clk_provide_migration_support(void)
 {
-
+	struct device_node *np;
 	/*
 	 * pre-enable those clock items which are not yet appropriately
 	 * acquired by their peripheral driver
@@ -970,7 +970,9 @@ static void __init mpc5121_clk_provide_migration_support(void)
 	 * unused and so it gets disabled
 	 */
 	clk_prepare_enable(clks[MPC512x_CLK_PSC3_MCLK]);/* serial console */
-	if (of_find_compatible_node(NULL, "pci", "fsl,mpc5121-pci"))
+	np = of_find_compatible_node(NULL, "pci", "fsl,mpc5121-pci");
+	of_node_put(np);
+	if (np)
 		clk_prepare_enable(clks[MPC512x_CLK_PCI]);
 }
 
-- 
2.25.1