[PATCH] powerpc/83xx: Hold the reference returned by of_find_compatible_node

[Liang He]

In mpc832x_spi_init(), we should 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/83xx/mpc832x_rdb.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
index bb8caa5071f8..e12cb44e717f 100644
--- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
@@ -162,6 +162,8 @@ static struct spi_board_info mpc832x_spi_boardinfo = {
 
 static int __init mpc832x_spi_init(void)
 {
+	struct device_node *np;
+
 	par_io_config_pin(3,  0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */
 	par_io_config_pin(3,  1, 3, 0, 1, 0); /* SPI1 MISO, I/O */
 	par_io_config_pin(3,  2, 3, 0, 1, 0); /* SPI1 CLK,  I/O */
@@ -175,7 +177,9 @@ static int __init mpc832x_spi_init(void)
 	 * Don't bother with legacy stuff when device tree contains
 	 * mmc-spi-slot node.
 	 */
-	if (of_find_compatible_node(NULL, NULL, "mmc-spi-slot"))
+	np = of_find_compatible_node(NULL, NULL, "mmc-spi-slot");
+	of_node_put(np);
+	if (np)
 		return 0;
 	return fsl_spi_init(&mpc832x_spi_boardinfo, 1, mpc83xx_spi_cs_control);
 }
-- 
2.25.1