linux-kernel - [PATCH 1/2] Bluetooth: btbcm: fix missing of_node_put() in btbcm_get_board

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Message-Id: <20241030-bluetooth-btbcm-node-cleanup-v1-1-fdc4b9df9fe3@gmail.com>
Date: Wed, 30 Oct 2024 16:46:21 +0100
From: Javier Carrasco <javier.carrasco.cruz@...il.com>
To: Marcel Holtmann <marcel@...tmann.org>, 
 Luiz Augusto von Dentz <luiz.dentz@...il.com>, 
 Linus Walleij <linus.walleij@...aro.org>
Cc: linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Javier Carrasco <javier.carrasco.cruz@...il.com>, stable@...r.kernel.org
Subject: [PATCH 1/2] Bluetooth: btbcm: fix missing of_node_put() in
 btbcm_get_board_name()

Add the missing call lto of_node_put(root) in the early return to
decrement the refcount and avoid leaking the resource.

Cc: stable@...r.kernel.org
Fixes: 63fac3343b99 ("Bluetooth: btbcm: Support per-board firmware variants")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
---
 drivers/bluetooth/btbcm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index eef00467905e..400c2663d6b0 100644
--- a/drivers/bluetooth/btbcm.c
+++ b/drivers/bluetooth/btbcm.c
@@ -549,8 +549,10 @@ static const char *btbcm_get_board_name(struct device *dev)
 	if (!root)
 		return NULL;
 
-	if (of_property_read_string_index(root, "compatible", 0, &tmp))
+	if (of_property_read_string_index(root, "compatible", 0, &tmp)) {
+		of_node_put(root);
 		return NULL;
+	}
 
 	/* get rid of any '/' in the compatible string */
 	board_type = devm_kstrdup(dev, tmp, GFP_KERNEL);

-- 
2.43.0