netdev - [PATCH net-next v2 02/13] net: stmmac: dwmac-sun8i: Use _

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Message-ID: <20240828032343.1218749-3-ruanjinjie@huawei.com>
Date: Wed, 28 Aug 2024 11:23:32 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <woojung.huh@...rochip.com>, <andrew@...n.ch>, <f.fainelli@...il.com>,
	<olteanv@...il.com>, <davem@...emloft.net>, <edumazet@...gle.com>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <linus.walleij@...aro.org>,
	<alsi@...g-olufsen.dk>, <justin.chen@...adcom.com>,
	<sebastian.hesselbarth@...il.com>, <alexandre.torgue@...s.st.com>,
	<joabreu@...opsys.com>, <mcoquelin.stm32@...il.com>, <wens@...e.org>,
	<jernej.skrabec@...il.com>, <samuel@...lland.org>, <hkallweit1@...il.com>,
	<linux@...linux.org.uk>, <ansuelsmth@...il.com>,
	<UNGLinuxDriver@...rochip.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <bcm-kernel-feedback-list@...adcom.com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-sunxi@...ts.linux.dev>,
	<linux-stm32@...md-mailman.stormreply.com>, <krzk@...nel.org>,
	<jic23@...nel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH net-next v2 02/13] net: stmmac: dwmac-sun8i: Use __free() to simplify code

Avoid need to manually handle of_node_put() by using __free(), which
can simplfy code.

Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
 .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c    | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 8c5b4e0c0976..415a0d23b3a5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -774,19 +774,17 @@ static int sun8i_dwmac_reset(struct stmmac_priv *priv)
 static int get_ephy_nodes(struct stmmac_priv *priv)
 {
 	struct sunxi_priv_data *gmac = priv->plat->bsp_priv;
-	struct device_node *mdio_mux;
-	struct device_node *mdio_internal;
 	int ret;
 
-	mdio_mux = of_get_child_by_name(priv->device->of_node, "mdio-mux");
+	struct device_node *mdio_mux __free(device_node) =
+		of_get_child_by_name(priv->device->of_node, "mdio-mux");
 	if (!mdio_mux) {
 		dev_err(priv->device, "Cannot get mdio-mux node\n");
 		return -ENODEV;
 	}
 
-	mdio_internal = of_get_compatible_child(mdio_mux,
-						"allwinner,sun8i-h3-mdio-internal");
-	of_node_put(mdio_mux);
+	struct device_node *mdio_internal __free(device_node) =
+		of_get_compatible_child(mdio_mux, "allwinner,sun8i-h3-mdio-internal");
 	if (!mdio_internal) {
 		dev_err(priv->device, "Cannot get internal_mdio node\n");
 		return -ENODEV;
@@ -800,18 +798,14 @@ static int get_ephy_nodes(struct stmmac_priv *priv)
 		gmac->rst_ephy = of_reset_control_get_exclusive(iphynode, NULL);
 		if (IS_ERR(gmac->rst_ephy)) {
 			ret = PTR_ERR(gmac->rst_ephy);
-			if (ret == -EPROBE_DEFER) {
-				of_node_put(mdio_internal);
+			if (ret == -EPROBE_DEFER)
 				return ret;
-			}
 			continue;
 		}
 		dev_info(priv->device, "Found internal PHY node\n");
-		of_node_put(mdio_internal);
 		return 0;
 	}
 
-	of_node_put(mdio_internal);
 	return -ENODEV;
 }
 
-- 
2.34.1