linux-kernel - [PATCH net-next] nfc: mrvl: use scoped device node handling to simplify cleanup

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Message-ID: <20240813103904.75978-1-krzysztof.kozlowski@linaro.org>
Date: Tue, 13 Aug 2024 12:39:04 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH net-next] nfc: mrvl: use scoped device node handling to simplify cleanup

Obtain the device node reference with scoped/cleanup.h to reduce error
handling and make the code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 drivers/nfc/nfcmrvl/uart.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/nfc/nfcmrvl/uart.c b/drivers/nfc/nfcmrvl/uart.c
index 956ae92f7573..01760f92e68a 100644
--- a/drivers/nfc/nfcmrvl/uart.c
+++ b/drivers/nfc/nfcmrvl/uart.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2015, Marvell International Ltd.
  */
 
+#include <linux/cleanup.h>
 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/of_gpio.h>
@@ -59,10 +60,10 @@ static const struct nfcmrvl_if_ops uart_ops = {
 static int nfcmrvl_uart_parse_dt(struct device_node *node,
 				 struct nfcmrvl_platform_data *pdata)
 {
-	struct device_node *matched_node;
 	int ret;
 
-	matched_node = of_get_compatible_child(node, "marvell,nfc-uart");
+	struct device_node *matched_node __free(device_node) = of_get_compatible_child(node,
+										       "marvell,nfc-uart");
 	if (!matched_node) {
 		matched_node = of_get_compatible_child(node, "mrvl,nfc-uart");
 		if (!matched_node)
@@ -72,15 +73,12 @@ static int nfcmrvl_uart_parse_dt(struct device_node *node,
 	ret = nfcmrvl_parse_dt(matched_node, pdata);
 	if (ret < 0) {
 		pr_err("Failed to get generic entries\n");
-		of_node_put(matched_node);
 		return ret;
 	}
 
 	pdata->flow_control = of_property_read_bool(matched_node, "flow-control");
 	pdata->break_control = of_property_read_bool(matched_node, "break-control");
 
-	of_node_put(matched_node);
-
 	return 0;
 }
 
-- 
2.43.0