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Date: Sat, 04 May 2024 21:20:08 +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>, Tony Lindgren <tony@...mide.com>, 
 Stephen Warren <swarren@...dotorg.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 v2 10/20] pinctrl: equilibrium: 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/pinctrl-equilibrium.c | 21 +++++----------------
 1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-equilibrium.c b/drivers/pinctrl/pinctrl-equilibrium.c
index 6e1be38865c3..e727257bb697 100644
--- a/drivers/pinctrl/pinctrl-equilibrium.c
+++ b/drivers/pinctrl/pinctrl-equilibrium.c
@@ -588,14 +588,13 @@ static int funcs_utils(struct device *dev, struct eqbr_pmx_func *funcs,
 		       unsigned int *nr_funcs, funcs_util_ops op)
 {
 	struct device_node *node = dev->of_node;
-	struct device_node *np;
 	struct property *prop;
 	const char *fn_name;
 	unsigned int fid;
 	int i, j;
 
 	i = 0;
-	for_each_child_of_node(node, np) {
+	for_each_child_of_node_scoped(node, np) {
 		prop = of_find_property(np, "groups", NULL);
 		if (!prop)
 			continue;
@@ -633,7 +632,6 @@ static int funcs_utils(struct device *dev, struct eqbr_pmx_func *funcs,
 			break;
 
 		default:
-			of_node_put(np);
 			return -EINVAL;
 		}
 		i++;
@@ -706,11 +704,10 @@ static int eqbr_build_groups(struct eqbr_pinctrl_drv_data *drvdata)
 	struct device_node *node = dev->of_node;
 	unsigned int *pins, *pinmux, pin_id, pinmux_id;
 	struct pingroup group, *grp = &group;
-	struct device_node *np;
 	struct property *prop;
 	int j, err;
 
-	for_each_child_of_node(node, np) {
+	for_each_child_of_node_scoped(node, np) {
 		prop = of_find_property(np, "groups", NULL);
 		if (!prop)
 			continue;
@@ -718,42 +715,35 @@ static int eqbr_build_groups(struct eqbr_pinctrl_drv_data *drvdata)
 		err = of_property_count_u32_elems(np, "pins");
 		if (err < 0) {
 			dev_err(dev, "No pins in the group: %s\n", prop->name);
-			of_node_put(np);
 			return err;
 		}
 		grp->npins = err;
 		grp->name = prop->value;
 		pins = devm_kcalloc(dev, grp->npins, sizeof(*pins), GFP_KERNEL);
-		if (!pins) {
-			of_node_put(np);
+		if (!pins)
 			return -ENOMEM;
-		}
+
 		grp->pins = pins;
 
 		pinmux = devm_kcalloc(dev, grp->npins, sizeof(*pinmux), GFP_KERNEL);
-		if (!pinmux) {
-			of_node_put(np);
+		if (!pinmux)
 			return -ENOMEM;
-		}
 
 		for (j = 0; j < grp->npins; j++) {
 			if (of_property_read_u32_index(np, "pins", j, &pin_id)) {
 				dev_err(dev, "Group %s: Read intel pins id failed\n",
 					grp->name);
-				of_node_put(np);
 				return -EINVAL;
 			}
 			if (pin_id >= drvdata->pctl_desc.npins) {
 				dev_err(dev, "Group %s: Invalid pin ID, idx: %d, pin %u\n",
 					grp->name, j, pin_id);
-				of_node_put(np);
 				return -EINVAL;
 			}
 			pins[j] = pin_id;
 			if (of_property_read_u32_index(np, "pinmux", j, &pinmux_id)) {
 				dev_err(dev, "Group %s: Read intel pinmux id failed\n",
 					grp->name);
-				of_node_put(np);
 				return -EINVAL;
 			}
 			pinmux[j] = pinmux_id;
@@ -764,7 +754,6 @@ static int eqbr_build_groups(struct eqbr_pinctrl_drv_data *drvdata)
 						pinmux);
 		if (err < 0) {
 			dev_err(dev, "Failed to register group %s\n", grp->name);
-			of_node_put(np);
 			return err;
 		}
 		memset(&group, 0, sizeof(group));

-- 
2.37.1


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