linux-kernel - [PATCH] nvmem: meson-efuse: Replacing the use of of_node_put to _

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Message-Id: <20240416011751.93016-1-marilene.agarcia@gmail.com>
Date: Mon, 15 Apr 2024 22:17:51 -0300
From: MarileneGarcia <marilene.agarcia@...il.com>
To: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Kevin Hilman <khilman@...libre.com>,
	Jerome Brunet <jbrunet@...libre.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
	Julia Lawall <julia.lawall@...ia.fr>
Cc: MarileneGarcia <marilene.agarcia@...il.com>,
	Shuah Khan <skhan@...uxfoundation.org>,
	Javier Carrasco <javier.carrasco.cruz@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] nvmem: meson-efuse: Replacing the use of of_node_put to __free

Use __free for device_node values, and thus drop calls to
of_node_put.

The goal is to reduce memory management issues by using this
scope-based of_node_put() cleanup to simplify function exit
handling. When using __free a resource is allocated within a
block, it is automatically freed at the end of the block.

Suggested-by: Julia Lawall <julia.lawall@...ia.fr>
Signed-off-by: MarileneGarcia <marilene.agarcia@...il.com>
---
 drivers/nvmem/meson-efuse.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/nvmem/meson-efuse.c b/drivers/nvmem/meson-efuse.c
index 33678d0af2c2..400a9a075e53 100644
--- a/drivers/nvmem/meson-efuse.c
+++ b/drivers/nvmem/meson-efuse.c
@@ -42,20 +42,19 @@ static int meson_efuse_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct meson_sm_firmware *fw;
-	struct device_node *sm_np;
 	struct nvmem_device *nvmem;
 	struct nvmem_config *econfig;
 	struct clk *clk;
 	unsigned int size;
+	struct device_node *sm_np __free(device_node) =
+		of_parse_phandle(pdev->dev.of_node, "secure-monitor", 0);
 
-	sm_np = of_parse_phandle(pdev->dev.of_node, "secure-monitor", 0);
 	if (!sm_np) {
 		dev_err(&pdev->dev, "no secure-monitor node\n");
 		return -ENODEV;
 	}
 
 	fw = meson_sm_get(sm_np);
-	of_node_put(sm_np);
 	if (!fw)
 		return -EPROBE_DEFER;
 
-- 
2.34.1