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[PATCH 05/14] power: supply: axp288_charger: use devm extcon / supply register

From Hans de Goede <hdegoede@redhat.com>
Newsgroups linux.kernel
Subject [PATCH 05/14] power: supply: axp288_charger: use devm extcon / supply register
Date 2016-12-19 01:10 +0100
Message-ID <sPTGH-pT-45@gated-at.bofh.it> (permalink)
References <sPTGF-pT-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Use devm_extcon_register_notifier and devm_power_supply_register
instead of their non devm counterparts, this avoids the need to do
manual cleanup and results in quite a nice code cleanup.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/power/supply/axp288_charger.c | 71 ++++++++---------------------------
 1 file changed, 15 insertions(+), 56 deletions(-)

diff --git a/drivers/power/supply/axp288_charger.c b/drivers/power/supply/axp288_charger.c
index 76f7d29..e435b1e 100644
--- a/drivers/power/supply/axp288_charger.c
+++ b/drivers/power/supply/axp288_charger.c
@@ -812,6 +812,7 @@ static int axp288_charger_probe(struct platform_device *pdev)
 {
 	int ret, i, pirq;
 	struct axp288_chrg_info *info;
+	struct device *dev = &pdev->dev;
 	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
 	struct power_supply_config charger_cfg = {};
 
@@ -833,33 +834,27 @@ static int axp288_charger_probe(struct platform_device *pdev)
 	/* Register for extcon notification */
 	INIT_WORK(&info->cable.work, axp288_charger_extcon_evt_worker);
 	info->cable.nb.notifier_call = axp288_charger_handle_cable_evt;
-	ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_SDP,
-					&info->cable.nb);
+	ret = devm_extcon_register_notifier(dev, info->cable.edev,
+					EXTCON_CHG_USB_SDP, &info->cable.nb);
 	if (ret) {
 		dev_err(&info->pdev->dev,
 			"failed to register extcon notifier for SDP %d\n", ret);
 		return ret;
 	}
 
-	ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_CDP,
-					&info->cable.nb);
+	ret = devm_extcon_register_notifier(dev, info->cable.edev,
+					EXTCON_CHG_USB_CDP, &info->cable.nb);
 	if (ret) {
 		dev_err(&info->pdev->dev,
 			"failed to register extcon notifier for CDP %d\n", ret);
-		extcon_unregister_notifier(info->cable.edev,
-				EXTCON_CHG_USB_SDP, &info->cable.nb);
 		return ret;
 	}
 
-	ret = extcon_register_notifier(info->cable.edev, EXTCON_CHG_USB_DCP,
-					&info->cable.nb);
+	ret = devm_extcon_register_notifier(dev, info->cable.edev,
+					EXTCON_CHG_USB_DCP, &info->cable.nb);
 	if (ret) {
 		dev_err(&info->pdev->dev,
 			"failed to register extcon notifier for DCP %d\n", ret);
-		extcon_unregister_notifier(info->cable.edev,
-				EXTCON_CHG_USB_SDP, &info->cable.nb);
-		extcon_unregister_notifier(info->cable.edev,
-				EXTCON_CHG_USB_CDP, &info->cable.nb);
 		return ret;
 	}
 
@@ -868,19 +863,18 @@ static int axp288_charger_probe(struct platform_device *pdev)
 
 	/* Register with power supply class */
 	charger_cfg.drv_data = info;
-	info->psy_usb = power_supply_register(&pdev->dev, &axp288_charger_desc,
-						&charger_cfg);
+	info->psy_usb = devm_power_supply_register(dev, &axp288_charger_desc,
+						   &charger_cfg);
 	if (IS_ERR(info->psy_usb)) {
 		dev_err(&pdev->dev, "failed to register power supply charger\n");
-		ret = PTR_ERR(info->psy_usb);
-		goto psy_reg_failed;
+		return PTR_ERR(info->psy_usb);
 	}
 
 	/* Register for OTG notification */
 	INIT_WORK(&info->otg.work, axp288_charger_otg_evt_worker);
 	info->otg.id_nb.notifier_call = axp288_charger_handle_otg_evt;
-	ret = extcon_register_notifier(info->otg.cable, EXTCON_USB_HOST,
-				       &info->otg.id_nb);
+	ret = devm_extcon_register_notifier(dev, info->otg.cable,
+					    EXTCON_USB_HOST, &info->otg.id_nb);
 	if (ret)
 		dev_warn(&pdev->dev, "failed to register otg notifier\n");
 
@@ -895,8 +889,7 @@ static int axp288_charger_probe(struct platform_device *pdev)
 		if (info->irq[i] < 0) {
 			dev_warn(&info->pdev->dev,
 				"failed to get virtual interrupt=%d\n", pirq);
-			ret = info->irq[i];
-			goto intr_reg_failed;
+			return info->irq[i];
 		}
 		ret = devm_request_threaded_irq(&info->pdev->dev, info->irq[i],
 					NULL, axp288_charger_irq_thread_handler,
@@ -904,53 +897,19 @@ static int axp288_charger_probe(struct platform_device *pdev)
 		if (ret) {
 			dev_err(&pdev->dev, "failed to request interrupt=%d\n",
 								info->irq[i]);
-			goto intr_reg_failed;
+			return ret;
 		}
 	}
 
 	ret = charger_init_hw_regs(info);
 	if (ret)
-		goto intr_reg_failed;
-
-	return 0;
-
-intr_reg_failed:
-	if (info->otg.cable)
-		extcon_unregister_notifier(info->otg.cable, EXTCON_USB_HOST,
-					&info->otg.id_nb);
-	power_supply_unregister(info->psy_usb);
-psy_reg_failed:
-	extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_SDP,
-					&info->cable.nb);
-	extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_CDP,
-					&info->cable.nb);
-	extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_DCP,
-					&info->cable.nb);
-	return ret;
-}
-
-static int axp288_charger_remove(struct platform_device *pdev)
-{
-	struct axp288_chrg_info *info =  dev_get_drvdata(&pdev->dev);
-
-	if (info->otg.cable)
-		extcon_unregister_notifier(info->otg.cable, EXTCON_USB_HOST,
-					&info->otg.id_nb);
-
-	extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_SDP,
-					&info->cable.nb);
-	extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_CDP,
-					&info->cable.nb);
-	extcon_unregister_notifier(info->cable.edev, EXTCON_CHG_USB_DCP,
-					&info->cable.nb);
-	power_supply_unregister(info->psy_usb);
+		return ret;
 
 	return 0;
 }
 
 static struct platform_driver axp288_charger_driver = {
 	.probe = axp288_charger_probe,
-	.remove = axp288_charger_remove,
 	.driver = {
 		.name = "axp288_charger",
 	},
-- 
2.9.3

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Thread

[PATCH 00/14] extcon api extension + axp288_charger fixes Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 12/14] power: supply: axp288_charger: Fix wrong regmap_update_bits Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 13/14] power: supply: axp288_charger: Remove unnecessary irq?_en register writes Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 08/14] power: supply: axp288_charger: Actually get and use the USB_HOST extcon device Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
    Re: [PATCH 08/14] power: supply: axp288_charger: Actually get and use  the USB_HOST extcon device Chanwoo Choi <cw00.choi@samsung.com> - 2016-12-19 11:20 +0100
  [PATCH 14/14] power: supply: axp288_charger: Fix the module not auto-loading Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 09/14] power: supply: axp288_charger: Handle charger type changing without disconnect Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 11/14] power: supply: axp288_charger: Get and process initial hardware-state Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 01/14] extcon: Add extcon_get_extcon_dev_by_cable_id function Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
    Re: [PATCH 01/14] extcon: Add extcon_get_extcon_dev_by_cable_id  function Chanwoo Choi <cw00.choi@samsung.com> - 2016-12-19 11:20 +0100
      Re: [PATCH 01/14] extcon: Add extcon_get_extcon_dev_by_cable_id  function Hans de Goede <hdegoede@redhat.com> - 2016-12-19 12:50 +0100
        Re: [PATCH 01/14] extcon: Add extcon_get_extcon_dev_by_cable_id  function Chanwoo Choi <cw00.choi@samsung.com> - 2016-12-19 13:00 +0100
  [PATCH 07/14] power: supply: axp288_charger: Move init_hw_regs call before supply registration Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 03/14] power: supply: axp288_charger: Make charger_init_hw_regs propagate i2c errors Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
  [PATCH 05/14] power: supply: axp288_charger: use devm extcon / supply register Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:10 +0100
    Re: [PATCH 05/14] power: supply: axp288_charger: use devm extcon /  supply register Chanwoo Choi <cw00.choi@samsung.com> - 2016-12-19 09:10 +0100
      Re: [PATCH 05/14] power: supply: axp288_charger: use devm extcon /  supply register Hans de Goede <hdegoede@redhat.com> - 2016-12-19 09:50 +0100
  [PATCH 04/14] power: supply: axp288_charger: Drop platform_data dependency Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:20 +0100
  [PATCH 06/14] power: supply: axp288_charger: Register extcon notifers after power_supply Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:20 +0100
  [PATCH 02/14] extcon: Make extcon_register_notifier use extcon_get_extcon_dev_by_cable_id Hans de Goede <hdegoede@redhat.com> - 2016-12-19 01:20 +0100

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