From: Peng Fan <peng.fan@nxp.com>
Date: Mon, 21 Aug 2023 02:39:27 +0000 (+0800)
Subject: amba: bus: fix refcount leak
X-Git-Tag: v5.15.132~216
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f1807fddd9bf175ee5e14fffc6b6106e4b297ef;p=thirdparty%2Fkernel%2Fstable.git

amba: bus: fix refcount leak

[ Upstream commit e312cbdc11305568554a9e18a2ea5c2492c183f3 ]

commit 5de1540b7bc4 ("drivers/amba: create devices from device tree")
increases the refcount of of_node, but not releases it in
amba_device_release, so there is refcount leak. By using of_node_put
to avoid refcount leak.

Fixes: 5de1540b7bc4 ("drivers/amba: create devices from device tree")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230821023928.3324283-1-peng.fan@oss.nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 6c0f7f4f7d1de..1af5ff9231eb0 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -366,6 +366,7 @@ static void amba_device_release(struct device *dev)
 {
 	struct amba_device *d = to_amba_device(dev);
 
+	of_node_put(d->dev.of_node);
 	if (d->res.parent)
 		release_resource(&d->res);
 	kfree(d);