linux-kernel - [PATCH 10/21] power: supply: pcf50633: Use devm_power_supply

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Message-ID: <20240123163653.384385-11-afd@ti.com>
Date: Tue, 23 Jan 2024 10:36:42 -0600
From: Andrew Davis <afd@...com>
To: Sebastian Reichel <sre@...nel.org>,
        Support Opensource
	<support.opensource@...semi.com>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski@...aro.org>,
        Pali Rohár
	<pali@...nel.org>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew Davis
	<afd@...com>
Subject: [PATCH 10/21] power: supply: pcf50633: Use devm_power_supply_register() helper

Use the device lifecycle managed register function. This helps prevent
mistakes like unregistering out of order in cleanup functions and
forgetting to unregister on error paths.

Signed-off-by: Andrew Davis <afd@...com>
---
 drivers/power/supply/pcf50633-charger.c | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/drivers/power/supply/pcf50633-charger.c b/drivers/power/supply/pcf50633-charger.c
index 950e30917c638..0e980522fee51 100644
--- a/drivers/power/supply/pcf50633-charger.c
+++ b/drivers/power/supply/pcf50633-charger.c
@@ -404,9 +404,9 @@ static int pcf50633_mbc_probe(struct platform_device *pdev)
 	psy_cfg.drv_data		= mbc;
 
 	/* Create power supplies */
-	mbc->adapter = power_supply_register(&pdev->dev,
-					     &pcf50633_mbc_adapter_desc,
-					     &psy_cfg);
+	mbc->adapter = devm_power_supply_register(&pdev->dev,
+						  &pcf50633_mbc_adapter_desc,
+						  &psy_cfg);
 	if (IS_ERR(mbc->adapter)) {
 		dev_err(mbc->pcf->dev, "failed to register adapter\n");
 		return PTR_ERR(mbc->adapter);
@@ -415,20 +415,19 @@ static int pcf50633_mbc_probe(struct platform_device *pdev)
 	usb_psy_cfg = psy_cfg;
 	usb_psy_cfg.attr_grp = pcf50633_mbc_sysfs_groups;
 
-	mbc->usb = power_supply_register(&pdev->dev, &pcf50633_mbc_usb_desc,
-					 &usb_psy_cfg);
+	mbc->usb = devm_power_supply_register(&pdev->dev,
+					      &pcf50633_mbc_usb_desc,
+					      &usb_psy_cfg);
 	if (IS_ERR(mbc->usb)) {
 		dev_err(mbc->pcf->dev, "failed to register usb\n");
-		power_supply_unregister(mbc->adapter);
 		return PTR_ERR(mbc->usb);
 	}
 
-	mbc->ac = power_supply_register(&pdev->dev, &pcf50633_mbc_ac_desc,
-					&psy_cfg);
+	mbc->ac = devm_power_supply_register(&pdev->dev,
+					     &pcf50633_mbc_ac_desc,
+					     &psy_cfg);
 	if (IS_ERR(mbc->ac)) {
 		dev_err(mbc->pcf->dev, "failed to register ac\n");
-		power_supply_unregister(mbc->adapter);
-		power_supply_unregister(mbc->usb);
 		return PTR_ERR(mbc->ac);
 	}
 
@@ -449,10 +448,6 @@ static void pcf50633_mbc_remove(struct platform_device *pdev)
 	/* Remove IRQ handlers */
 	for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
 		pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
-
-	power_supply_unregister(mbc->usb);
-	power_supply_unregister(mbc->adapter);
-	power_supply_unregister(mbc->ac);
 }
 
 static struct platform_driver pcf50633_mbc_driver = {
-- 
2.39.2