[PATCH 3.16 065/370] bus: vexpress-config: fix device reference leak

[Ben Hutchings]

3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <jo...@kernel.org>

commit c090959b9dd8c87703e275079aa4b4a824ba3f8e upstream.

Make sure to drop the reference to the parent device taken by
class_find_device() after populating the bus.

Fixes: 3b9334ac835b ("mfd: vexpress: Convert custom func API to regmap")
Acked-by: Sudeep Holla <sudeep.ho...@arm.com>
Signed-off-by: Johan Hovold <jo...@kernel.org>
Signed-off-by: Arnd Bergmann <a...@arndb.de>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 drivers/bus/vexpress-config.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/bus/vexpress-config.c
+++ b/drivers/bus/vexpress-config.c
@@ -171,6 +171,7 @@ static int vexpress_config_populate(stru
 {
        struct device_node *bridge;
        struct device *parent;
+       int ret;
 
        bridge = of_parse_phandle(node, "arm,vexpress,config-bridge", 0);
        if (!bridge)
@@ -181,7 +182,11 @@ static int vexpress_config_populate(stru
        if (WARN_ON(!parent))
                return -ENODEV;
 
-       return of_platform_populate(node, NULL, NULL, parent);
+       ret = of_platform_populate(node, NULL, NULL, parent);
+
+       put_device(parent);
+
+       return ret;
 }
 
 static int __init vexpress_config_init(void)