netdev - [PATCH v4 6/8] reset: mchp: sparx5: Release syscon when not use anymore

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Message-ID: <20240805101725.93947-7-herve.codina@bootlin.com>
Date: Mon,  5 Aug 2024 12:17:22 +0200
From: Herve Codina <herve.codina@...tlin.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	Simon Horman <horms@...nel.org>,
	Lee Jones <lee@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Derek Kiernan <derek.kiernan@....com>,
	Dragan Cvetic <dragan.cvetic@....com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Herve Codina <herve.codina@...tlin.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Lars Povlsen <lars.povlsen@...rochip.com>,
	Steen Hegelund <Steen.Hegelund@...rochip.com>,
	Daniel Machon <daniel.machon@...rochip.com>,
	UNGLinuxDriver@...rochip.com,
	Rob Herring <robh@...nel.org>,
	Saravana Kannan <saravanak@...gle.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Horatiu Vultur <horatiu.vultur@...rochip.com>,
	Andrew Lunn <andrew@...n.ch>,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	Allan Nielsen <allan.nielsen@...rochip.com>,
	Steen Hegelund <steen.hegelund@...rochip.com>,
	Luca Ceresoli <luca.ceresoli@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Clément Léger <clement.leger@...tlin.com>
Subject: [PATCH v4 6/8] reset: mchp: sparx5: Release syscon when not use anymore

From: Clément Léger <clement.leger@...tlin.com>

The sparx5 reset controller does not release syscon when it is not used
anymore.

This reset controller is used by the LAN966x PCI device driver.
It can be removed from the system at runtime and needs to release its
consumed syscon on removal.

Use the newly introduced devm_syscon_regmap_lookup_by_phandle() in order
to get the syscon and automatically release it on removal.

Signed-off-by: Clément Léger <clement.leger@...tlin.com>
Signed-off-by: Herve Codina <herve.codina@...tlin.com>
---
 drivers/reset/reset-microchip-sparx5.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/reset/reset-microchip-sparx5.c b/drivers/reset/reset-microchip-sparx5.c
index 69915c7b4941..c4fe65291a43 100644
--- a/drivers/reset/reset-microchip-sparx5.c
+++ b/drivers/reset/reset-microchip-sparx5.c
@@ -65,15 +65,11 @@ static const struct reset_control_ops sparx5_reset_ops = {
 static int mchp_sparx5_map_syscon(struct platform_device *pdev, char *name,
 				  struct regmap **target)
 {
-	struct device_node *syscon_np;
+	struct device *dev = &pdev->dev;
 	struct regmap *regmap;
 	int err;
 
-	syscon_np = of_parse_phandle(pdev->dev.of_node, name, 0);
-	if (!syscon_np)
-		return -ENODEV;
-	regmap = syscon_node_to_regmap(syscon_np);
-	of_node_put(syscon_np);
+	regmap = devm_syscon_regmap_lookup_by_phandle(dev, dev->of_node, name);
 	if (IS_ERR(regmap)) {
 		err = PTR_ERR(regmap);
 		dev_err(&pdev->dev, "No '%s' map: %d\n", name, err);
-- 
2.45.0