linux-kernel - [PATCH 04/18] power: reset: tps65086-restart: Use devm_register_sys_off

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Message-ID: <20240201180102.70395-5-afd@ti.com>
Date: Thu, 1 Feb 2024 12:00:48 -0600
From: Andrew Davis <afd@...com>
To: Sebastian Reichel <sre@...nel.org>,
        Manivannan Sadhasivam
	<manivannan.sadhasivam@...aro.org>,
        Cristian Ciocaltea
	<cristian.ciocaltea@...il.com>,
        Florian Fainelli
	<florian.fainelli@...adcom.com>,
        Ray Jui <rjui@...adcom.com>, Scott Branden
	<sbranden@...adcom.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad
 Dybcio <konrad.dybcio@...aro.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-actions@...ts.infradead.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, Andrew Davis <afd@...com>
Subject: [PATCH 04/18] power: reset: tps65086-restart: Use devm_register_sys_off_handler(RESTART)

Use device life-cycle managed register function to simplify probe and
exit paths.

Signed-off-by: Andrew Davis <afd@...com>
---
 drivers/power/reset/tps65086-restart.c | 35 ++++++--------------------
 1 file changed, 7 insertions(+), 28 deletions(-)

diff --git a/drivers/power/reset/tps65086-restart.c b/drivers/power/reset/tps65086-restart.c
index ee8e9f4b837ea..82d7a761a0385 100644
--- a/drivers/power/reset/tps65086-restart.c
+++ b/drivers/power/reset/tps65086-restart.c
@@ -10,15 +10,12 @@
 #include <linux/reboot.h>
 
 struct tps65086_restart {
-	struct notifier_block handler;
 	struct device *dev;
 };
 
-static int tps65086_restart_notify(struct notifier_block *this,
-				   unsigned long mode, void *cmd)
+static int tps65086_restart_notify(struct sys_off_data *data)
 {
-	struct tps65086_restart *tps65086_restart =
-		container_of(this, struct tps65086_restart, handler);
+	struct tps65086_restart *tps65086_restart = data->cb_data;
 	struct tps65086 *tps65086 = dev_get_drvdata(tps65086_restart->dev->parent);
 	int ret;
 
@@ -46,13 +43,13 @@ static int tps65086_restart_probe(struct platform_device *pdev)
 	if (!tps65086_restart)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, tps65086_restart);
-
-	tps65086_restart->handler.notifier_call = tps65086_restart_notify;
-	tps65086_restart->handler.priority = 192;
 	tps65086_restart->dev = &pdev->dev;
 
-	ret = register_restart_handler(&tps65086_restart->handler);
+	ret = devm_register_sys_off_handler(&pdev->dev,
+					    SYS_OFF_MODE_RESTART,
+					    SYS_OFF_PRIO_HIGH,
+					    tps65086_restart_notify,
+					    tps65086_restart);
 	if (ret) {
 		dev_err(&pdev->dev, "%s: cannot register restart handler: %d\n",
 			__func__, ret);
@@ -62,23 +59,6 @@ static int tps65086_restart_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static void tps65086_restart_remove(struct platform_device *pdev)
-{
-	struct tps65086_restart *tps65086_restart = platform_get_drvdata(pdev);
-	int ret;
-
-	ret = unregister_restart_handler(&tps65086_restart->handler);
-	if (ret) {
-		/*
-		 * tps65086_restart_probe() registered the restart handler. So
-		 * unregistering should work fine. Checking the error code
-		 * shouldn't be needed, still doing it for completeness.
-		 */
-		dev_err(&pdev->dev, "%s: cannot unregister restart handler: %d\n",
-			__func__, ret);
-	}
-}
-
 static const struct platform_device_id tps65086_restart_id_table[] = {
 	{ "tps65086-reset", },
 	{ /* sentinel */ }
@@ -90,7 +70,6 @@ static struct platform_driver tps65086_restart_driver = {
 		.name = "tps65086-restart",
 	},
 	.probe = tps65086_restart_probe,
-	.remove_new = tps65086_restart_remove,
 	.id_table = tps65086_restart_id_table,
 };
 module_platform_driver(tps65086_restart_driver);
-- 
2.39.2