linux-kernel - [PATCH 02/21] pinctrl: tegra: Use scope based of_node

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Date: Wed, 01 May 2024 20:56:00 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Linus Walleij <linus.walleij@...aro.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>, Dvorkin Dmitry <dvorkin@...bo.com>, 
 Wells Lu <wellslutw@...il.com>, Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Emil Renner Berthing <kernel@...il.dk>, 
 Jianlong Huang <jianlong.huang@...rfivetech.com>, 
 Hal Feng <hal.feng@...rfivetech.com>, Orson Zhai <orsonzhai@...il.com>, 
 Baolin Wang <baolin.wang@...ux.alibaba.com>, 
 Chunyan Zhang <zhang.lyra@...il.com>, Viresh Kumar <vireshk@...nel.org>, 
 Shiraz Hashim <shiraz.linux.kernel@...il.com>, soc@...nel.org, 
 Krzysztof Kozlowski <krzk@...nel.org>, 
 Sylwester Nawrocki <s.nawrocki@...sung.com>, 
 Alim Akhtar <alim.akhtar@...sung.com>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Patrice Chotard <patrice.chotard@...s.st.com>, 
 Heiko Stuebner <heiko@...ech.de>, Damien Le Moal <dlemoal@...nel.org>, 
 Ludovic Desroches <ludovic.desroches@...rochip.com>, 
 Nicolas Ferre <nicolas.ferre@...rochip.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Claudiu Beznea <claudiu.beznea@...on.dev>, 
 Dong Aisheng <aisheng.dong@....com>, Fabio Estevam <festevam@...il.com>, 
 Shawn Guo <shawnguo@...nel.org>, Jacky Bai <ping.bai@....com>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Chester Lin <chester62515@...il.com>, Matthias Brugger <mbrugger@...e.com>, 
 Ghennadi Procopciuc <ghennadi.procopciuc@....nxp.com>, 
 Sean Wang <sean.wang@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Andrew Jeffery <andrew@...econstruct.com.au>, Joel Stanley <joel@....id.au>, 
 Dan Carpenter <dan.carpenter@...aro.org>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-tegra@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-stm32@...md-mailman.stormreply.com, linux-samsung-soc@...r.kernel.org, 
 linux-renesas-soc@...r.kernel.org, linux-rockchip@...ts.infradead.org, 
 linux-riscv@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 imx@...ts.linux.dev, linux-aspeed@...ts.ozlabs.org, 
 openbmc@...ts.ozlabs.org, Peng Fan <peng.fan@....com>
Subject: [PATCH 02/21] pinctrl: tegra: Use scope based of_node_put()
 cleanups

From: Peng Fan <peng.fan@....com>

Use scope based of_node_put() cleanup to simplify code.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/pinctrl/tegra/pinctrl-tegra-xusb.c |  7 ++-----
 drivers/pinctrl/tegra/pinctrl-tegra.c      | 10 +++-------
 2 files changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/pinctrl/tegra/pinctrl-tegra-xusb.c b/drivers/pinctrl/tegra/pinctrl-tegra-xusb.c
index 96ef57a7d385..49c5edeba87f 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra-xusb.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra-xusb.c
@@ -238,20 +238,17 @@ static int tegra_xusb_padctl_dt_node_to_map(struct pinctrl_dev *pinctrl,
 {
 	struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
 	unsigned int reserved_maps = 0;
-	struct device_node *np;
 	int err;
 
 	*num_maps = 0;
 	*maps = NULL;
 
-	for_each_child_of_node(parent, np) {
+	for_each_child_of_node_scoped(parent, np) {
 		err = tegra_xusb_padctl_parse_subnode(padctl, np, maps,
 						      &reserved_maps,
 						      num_maps);
-		if (err < 0) {
-			of_node_put(np);
+		if (err < 0)
 			return err;
-		}
 	}
 
 	return 0;
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c
index ccfa3870a67d..69088609a0c8 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra.c
@@ -188,20 +188,18 @@ static int tegra_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev,
 					unsigned *num_maps)
 {
 	unsigned reserved_maps;
-	struct device_node *np;
 	int ret;
 
 	reserved_maps = 0;
 	*map = NULL;
 	*num_maps = 0;
 
-	for_each_child_of_node(np_config, np) {
+	for_each_child_of_node_scoped(np_config, np) {
 		ret = tegra_pinctrl_dt_subnode_to_map(pctldev, np, map,
 						      &reserved_maps, num_maps);
 		if (ret < 0) {
 			pinctrl_utils_free_map(pctldev, *map,
 				*num_maps);
-			of_node_put(np);
 			return ret;
 		}
 	}
@@ -759,17 +757,15 @@ DEFINE_NOIRQ_DEV_PM_OPS(tegra_pinctrl_pm, tegra_pinctrl_suspend, tegra_pinctrl_r
 
 static bool tegra_pinctrl_gpio_node_has_range(struct tegra_pmx *pmx)
 {
-	struct device_node *np;
+	struct device_node *np __free(device_node) =
+		of_find_compatible_node(NULL, NULL, pmx->soc->gpio_compatible);
 	bool has_prop = false;
 
-	np = of_find_compatible_node(NULL, NULL, pmx->soc->gpio_compatible);
 	if (!np)
 		return has_prop;
 
 	has_prop = of_find_property(np, "gpio-ranges", NULL);
 
-	of_node_put(np);
-
 	return has_prop;
 }
 

-- 
2.37.1