Merge tag 'for-v3.11' of git://git.infradead.org/battery-2.6

Pull battery subsystem update from Anton Vorontsov:
 "Nothing exciting this time, just assorted fixes and cleanups"

* tag 'for-v3.11' of git://git.infradead.org/battery-2.6: (25 commits)
  charger-manager: Fix regulator_get() return check
  charger-manager: Fix a bug when it unregisters notifier block of extcon
  tps65090-charger: Add dt node to power_supply
  sbs-battery: Add dt to power_supply struct
  power_supply: Add of_node_put to fix refcount
  power_supply: Move of_node out of the #ifdef CONFIG_OF
  power/reset: Make the vexpress driver optional on arm and arm64
  charger-manager: Add missing newlines, fix a couple of typos, add pr_fmt
  tps65090-charger: Fix AC detect
  MAINTAINERS: Update email address for Anton Vorontsov
  charger-manager: Ensure event is not used as format string
  power_supply: Replace strict_strtoul() with kstrtoul()
  generic-adc-battery: Fix checking if none of the channels are supported
  power: Use platform_{get,set}_drvdata()
  pm2301_charger: Return error if create_singlethread_workqueue fails
  pm2301_charger: Fix NULL pointer dereference
  lp8727_charger: Support the device tree feature
  twl4030_charger: Remove unnecessary platform_set_drvdata()
  rx51_battery: Remove unnecessary platform_set_drvdata()
  jz4740-battery: Remove unnecessary platform_set_drvdata()
  ...

Documentation/devicetree/bindings/power_supply/lp8727_charger.txt

@@ -0,0 +1,44 @@
+Binding for TI/National Semiconductor LP8727 Charger
+
+Required properties:
+- compatible: "ti,lp8727"
+- reg: I2C slave address 27h
+
+Optional properties:
+- interrupt-parent: interrupt controller node (see interrupt binding[0])
+- interrupts: interrupt specifier (see interrupt binding[0])
+- debounce-ms: interrupt debounce time. (u32)
+
+AC and USB charging parameters
+- charger-type: "ac" or "usb" (string)
+- eoc-level: value of 'enum lp8727_eoc_level' (u8)
+- charging-current: value of 'enum lp8727_ichg' (u8)
+
+[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+
+Example)
+
+lp8727@27 {
+	compatible = "ti,lp8727";
+	reg = <0x27>;
+
+	/* GPIO 134 is used for LP8728 interrupt pin */
+	interrupt-parent = <&gpio5>; 	/* base = 128 */
+	interrupts = <6 0x2>;		/* offset = 6, falling edge type */
+
+	debounce-ms = <300>;
+
+	/* AC charger: 5% EOC and 500mA charging current */
+	ac {
+		charger-type = "ac";
+		eoc-level = /bits/ 8 <0>;
+		charging-current = /bits/ 8 <4>;
+	};
+
+	/* USB charger: 10% EOC and 400mA charging current */
+	usb {
+		charger-type = "usb";
+		eoc-level = /bits/ 8 <1>;
+		charging-current = /bits/ 8 <2>;
+	};
+};

MAINTAINERS

@@ -752,7 +752,7 @@ S:	Maintained
 F:	arch/arm/mach-highbank/
 
 ARM/CAVIUM NETWORKS CNS3XXX MACHINE SUPPORT
-M:	Anton Vorontsov <avorontsov@mvista.com>
+M:	Anton Vorontsov <anton@enomsg.org>
 S:	Maintained
 F:	arch/arm/mach-cns3xxx/
 T:	git git://git.infradead.org/users/cbou/linux-cns3xxx.git
@@ -6406,7 +6406,7 @@ F:	include/linux/timer*
 F:	kernel/*timer*
 
 POWER SUPPLY CLASS/SUBSYSTEM and DRIVERS
-M:	Anton Vorontsov <cbou@mail.ru>
+M:	Anton Vorontsov <anton@enomsg.org>
 M:	David Woodhouse <dwmw2@infradead.org>
 T:	git git://git.infradead.org/battery-2.6.git
 S:	Maintained
@@ -6516,7 +6516,7 @@ S:	Maintained
 F:	drivers/block/ps3vram.c
 
 PSTORE FILESYSTEM
-M:	Anton Vorontsov <cbouatmailru@gmail.com>
+M:	Anton Vorontsov <anton@enomsg.org>
 M:	Colin Cross <ccross@android.com>
 M:	Kees Cook <keescook@chromium.org>
 M:	Tony Luck <tony.luck@intel.com>
@@ -7214,7 +7214,7 @@ F:	drivers/mmc/host/sdhci.*
 F:	drivers/mmc/host/sdhci-pltfm.[ch]
 
 SECURE DIGITAL HOST CONTROLLER INTERFACE, OPEN FIRMWARE BINDINGS (SDHCI-OF)
-M:	Anton Vorontsov <avorontsov@ru.mvista.com>
+M:	Anton Vorontsov <anton@enomsg.org>
 L:	linuxppc-dev@lists.ozlabs.org
 L:	linux-mmc@vger.kernel.org
 S:	Maintained

drivers/power/88pm860x_battery.c

@@ -992,7 +992,6 @@ static int pm860x_battery_remove(struct platform_device *pdev)
 	free_irq(info->irq_batt, info);
 	free_irq(info->irq_cc, info);
 	power_supply_unregister(&info->battery);
-	platform_set_drvdata(pdev, NULL);
 	return 0;
 }
 

drivers/power/88pm860x_charger.c

@@ -722,7 +722,6 @@ static int pm860x_charger_remove(struct platform_device *pdev)
 	struct pm860x_charger_info *info = platform_get_drvdata(pdev);
 	int i;
 
-	platform_set_drvdata(pdev, NULL);
 	power_supply_unregister(&info->usb);
 	free_irq(info->irq[0], info);
 	for (i = 0; i < info->irq_nums; i++)

drivers/power/ab8500_btemp.c

@@ -1045,7 +1045,6 @@ static int ab8500_btemp_remove(struct platform_device *pdev)
 
 	flush_scheduled_work();
 	power_supply_unregister(&di->btemp_psy);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/power/ab8500_charger.c

@@ -3425,8 +3425,6 @@ static int ab8500_charger_remove(struct platform_device *pdev)
 	if (di->ac_chg.enabled && !di->ac_chg.external)
 		power_supply_unregister(&di->ac_chg.psy);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/power/ab8500_fg.c

@@ -2465,9 +2465,9 @@ static ssize_t charge_full_store(struct ab8500_fg *di, const char *buf,
 				 size_t count)
 {
 	unsigned long charge_full;
-	ssize_t ret = -EINVAL;
+	ssize_t ret;
 
-	ret = strict_strtoul(buf, 10, &charge_full);
+	ret = kstrtoul(buf, 10, &charge_full);
 
 	dev_dbg(di->dev, "Ret %zd charge_full %lu", ret, charge_full);
 
@@ -2489,7 +2489,7 @@ static ssize_t charge_now_store(struct ab8500_fg *di, const char *buf,
 	unsigned long charge_now;
 	ssize_t ret;
 
-	ret = strict_strtoul(buf, 10, &charge_now);
+	ret = kstrtoul(buf, 10, &charge_now);
 
 	dev_dbg(di->dev, "Ret %zd charge_now %lu was %d",
 		ret, charge_now, di->bat_cap.prev_mah);
@@ -3070,7 +3070,6 @@ static int ab8500_fg_remove(struct platform_device *pdev)
 	flush_scheduled_work();
 	ab8500_fg_sysfs_psy_remove_attrs(di->fg_psy.dev);
 	power_supply_unregister(&di->fg_psy);
-	platform_set_drvdata(pdev, NULL);
 	return ret;
 }
 

drivers/power/abx500_chargalg.c

@@ -2035,7 +2035,6 @@ static int abx500_chargalg_remove(struct platform_device *pdev)
 	destroy_workqueue(di->chargalg_wq);
 
 	power_supply_unregister(&di->chargalg_psy);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/power/bq27x00_battery.c

@@ -966,7 +966,6 @@ static int bq27000_battery_probe(struct platform_device *pdev)
 	return 0;
 
 err_free:
-	platform_set_drvdata(pdev, NULL);
 	kfree(di);
 
 	return ret;
@@ -978,7 +977,6 @@ static int bq27000_battery_remove(struct platform_device *pdev)
 
 	bq27x00_powersupply_unregister(di);
 
-	platform_set_drvdata(pdev, NULL);
 	kfree(di);
 
 	return 0;

drivers/power/charger-manager.c

@@ -12,6 +12,8 @@
  * published by the Free Software Foundation.
 **/
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/irq.h>
@@ -195,8 +197,8 @@ static bool is_charging(struct charger_manager *cm)
 				cm->charger_stat[i],
 				POWER_SUPPLY_PROP_ONLINE, &val);
 		if (ret) {
-			dev_warn(cm->dev, "Cannot read ONLINE value from %s.\n",
-					cm->desc->psy_charger_stat[i]);
+			dev_warn(cm->dev, "Cannot read ONLINE value from %s\n",
+				 cm->desc->psy_charger_stat[i]);
 			continue;
 		}
 		if (val.intval == 0)
@@ -210,8 +212,8 @@ static bool is_charging(struct charger_manager *cm)
 				cm->charger_stat[i],
 				POWER_SUPPLY_PROP_STATUS, &val);
 		if (ret) {
-			dev_warn(cm->dev, "Cannot read STATUS value from %s.\n",
-					cm->desc->psy_charger_stat[i]);
+			dev_warn(cm->dev, "Cannot read STATUS value from %s\n",
+				 cm->desc->psy_charger_stat[i]);
 			continue;
 		}
 		if (val.intval == POWER_SUPPLY_STATUS_FULL ||
@@ -289,7 +291,7 @@ static bool is_polling_required(struct charger_manager *cm)
 		return is_charging(cm);
 	default:
 		dev_warn(cm->dev, "Incorrect polling_mode (%d)\n",
-			cm->desc->polling_mode);
+			 cm->desc->polling_mode);
 	}
 
 	return false;
@@ -331,9 +333,8 @@ static int try_charger_enable(struct charger_manager *cm, bool enable)
 
 			err = regulator_enable(desc->charger_regulators[i].consumer);
 			if (err < 0) {
-				dev_warn(cm->dev,
-					"Cannot enable %s regulator\n",
-					desc->charger_regulators[i].regulator_name);
+				dev_warn(cm->dev, "Cannot enable %s regulator\n",
+					 desc->charger_regulators[i].regulator_name);
 			}
 		}
 	} else {
@@ -350,9 +351,8 @@ static int try_charger_enable(struct charger_manager *cm, bool enable)
 
 			err = regulator_disable(desc->charger_regulators[i].consumer);
 			if (err < 0) {
-				dev_warn(cm->dev,
-					"Cannot disable %s regulator\n",
-					desc->charger_regulators[i].regulator_name);
+				dev_warn(cm->dev, "Cannot disable %s regulator\n",
+					 desc->charger_regulators[i].regulator_name);
 			}
 		}
 
@@ -365,9 +365,8 @@ static int try_charger_enable(struct charger_manager *cm, bool enable)
 				    desc->charger_regulators[i].consumer)) {
 				regulator_force_disable(
 					desc->charger_regulators[i].consumer);
-				dev_warn(cm->dev,
-					"Disable regulator(%s) forcibly.\n",
-					desc->charger_regulators[i].regulator_name);
+				dev_warn(cm->dev, "Disable regulator(%s) forcibly\n",
+					 desc->charger_regulators[i].regulator_name);
 			}
 		}
 	}
@@ -450,7 +449,7 @@ static void uevent_notify(struct charger_manager *cm, const char *event)
 	strncpy(env_str, event, UEVENT_BUF_SIZE);
 	kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
 
-	dev_info(cm->dev, event);
+	dev_info(cm->dev, "%s\n", event);
 }
 
 /**
@@ -478,7 +477,7 @@ static void fullbatt_vchk(struct work_struct *work)
 
 	err = get_batt_uV(cm, &batt_uV);
 	if (err) {
-		dev_err(cm->dev, "%s: get_batt_uV error(%d).\n", __func__, err);
+		dev_err(cm->dev, "%s: get_batt_uV error(%d)\n", __func__, err);
 		return;
 	}
 
@@ -486,7 +485,7 @@ static void fullbatt_vchk(struct work_struct *work)
 	if (diff < 0)
 		return;
 
-	dev_info(cm->dev, "VBATT dropped %duV after full-batt.\n", diff);
+	dev_info(cm->dev, "VBATT dropped %duV after full-batt\n", diff);
 
 	if (diff > desc->fullbatt_vchkdrop_uV) {
 		try_charger_restart(cm);
@@ -519,7 +518,7 @@ static int check_charging_duration(struct charger_manager *cm)
 		duration = curr - cm->charging_start_time;
 
 		if (duration > desc->charging_max_duration_ms) {
-			dev_info(cm->dev, "Charging duration exceed %lldms",
+			dev_info(cm->dev, "Charging duration exceed %lldms\n",
 				 desc->charging_max_duration_ms);
 			uevent_notify(cm, "Discharging");
 			try_charger_enable(cm, false);
@@ -530,9 +529,9 @@ static int check_charging_duration(struct charger_manager *cm)
 
 		if (duration > desc->charging_max_duration_ms &&
 				is_ext_pwr_online(cm)) {
-			dev_info(cm->dev, "DisCharging duration exceed %lldms",
+			dev_info(cm->dev, "Discharging duration exceed %lldms\n",
 				 desc->discharging_max_duration_ms);
-			uevent_notify(cm, "Recharing");
+			uevent_notify(cm, "Recharging");
 			try_charger_enable(cm, true);
 			ret = true;
 		}
@@ -579,7 +578,7 @@ static bool _cm_monitor(struct charger_manager *cm)
 	 */
 	} else if (!cm->emergency_stop && check_charging_duration(cm)) {
 		dev_dbg(cm->dev,
-			"Charging/Discharging duration is out of range");
+			"Charging/Discharging duration is out of range\n");
 	/*
 	 * Check dropped voltage of battery. If battery voltage is more
 	 * dropped than fullbatt_vchkdrop_uV after fully charged state,
@@ -595,7 +594,7 @@ static bool _cm_monitor(struct charger_manager *cm)
 	 */
 	} else if (!cm->emergency_stop && is_full_charged(cm) &&
 			cm->charger_enabled) {
-		dev_info(cm->dev, "EVENT_HANDLE: Battery Fully Charged.\n");
+		dev_info(cm->dev, "EVENT_HANDLE: Battery Fully Charged\n");
 		uevent_notify(cm, default_event_names[CM_EVENT_BATT_FULL]);
 
 		try_charger_enable(cm, false);
@@ -725,7 +724,7 @@ static void fullbatt_handler(struct charger_manager *cm)
 		cm->fullbatt_vchk_jiffies_at = 1;
 
 out:
-	dev_info(cm->dev, "EVENT_HANDLE: Battery Fully Charged.\n");
+	dev_info(cm->dev, "EVENT_HANDLE: Battery Fully Charged\n");
 	uevent_notify(cm, default_event_names[CM_EVENT_BATT_FULL]);
 }
 
@@ -972,7 +971,7 @@ static bool cm_setup_timer(void)
 	mutex_unlock(&cm_list_mtx);
 
 	if (wakeup_ms < UINT_MAX && wakeup_ms > 0) {
-		pr_info("Charger Manager wakeup timer: %u ms.\n", wakeup_ms);
+		pr_info("Charger Manager wakeup timer: %u ms\n", wakeup_ms);
 		if (rtc_dev) {
 			struct rtc_wkalrm tmp;
 			unsigned long time, now;
@@ -1005,8 +1004,7 @@ static bool cm_setup_timer(void)
 				ret = false;
 			}
 
-			pr_info("Waking up after %lu secs.\n",
-					time - now);
+			pr_info("Waking up after %lu secs\n", time - now);
 
 			rtc_time_to_tm(time, &tmp.time);
 			rtc_set_alarm(rtc_dev, &tmp);
@@ -1101,7 +1099,7 @@ int setup_charger_manager(struct charger_global_desc *gd)
 	g_desc = NULL;
 
 	if (!gd->rtc_only_wakeup) {
-		pr_err("The callback rtc_only_wakeup is not given.\n");
+		pr_err("The callback rtc_only_wakeup is not given\n");
 		return -EINVAL;
 	}
 
@@ -1112,7 +1110,7 @@ int setup_charger_manager(struct charger_global_desc *gd)
 			/* Retry at probe. RTC may be not registered yet */
 		}
 	} else {
-		pr_warn("No wakeup timer is given for charger manager."
+		pr_warn("No wakeup timer is given for charger manager.  "
 			"In-suspend monitoring won't work.\n");
 	}
 
@@ -1138,13 +1136,13 @@ static void charger_extcon_work(struct work_struct *work)
 					cable->min_uA, cable->max_uA);
 		if (ret < 0) {
 			pr_err("Cannot set current limit of %s (%s)\n",
-				cable->charger->regulator_name, cable->name);
+			       cable->charger->regulator_name, cable->name);
 			return;
 		}
 
 		pr_info("Set current limit of %s : %duA ~ %duA\n",
-					cable->charger->regulator_name,
-					cable->min_uA, cable->max_uA);
+			cable->charger->regulator_name,
+			cable->min_uA, cable->max_uA);
 	}
 
 	try_charger_enable(cable->cm, cable->attached);
@@ -1210,9 +1208,8 @@ static int charger_extcon_init(struct charger_manager *cm,
 	ret = extcon_register_interest(&cable->extcon_dev,
 			cable->extcon_name, cable->name, &cable->nb);
 	if (ret < 0) {
-		pr_info("Cannot register extcon_dev for %s(cable: %s).\n",
-				cable->extcon_name,
-				cable->name);
+		pr_info("Cannot register extcon_dev for %s(cable: %s)\n",
+			cable->extcon_name, cable->name);
 		ret = -EINVAL;
 	}
 
@@ -1242,11 +1239,10 @@ static int charger_manager_register_extcon(struct charger_manager *cm)
 
 		charger->consumer = regulator_get(cm->dev,
 					charger->regulator_name);
-		if (charger->consumer == NULL) {
-			dev_err(cm->dev, "Cannot find charger(%s)n",
-					charger->regulator_name);
-			ret = -EINVAL;
-			goto err;
+		if (IS_ERR(charger->consumer)) {
+			dev_err(cm->dev, "Cannot find charger(%s)\n",
+				charger->regulator_name);
+			return PTR_ERR(charger->consumer);
 		}
 		charger->cm = cm;
 
@@ -1255,8 +1251,8 @@ static int charger_manager_register_extcon(struct charger_manager *cm)
 
 			ret = charger_extcon_init(cm, cable);
 			if (ret < 0) {
-				dev_err(cm->dev, "Cannot initialize charger(%s)n",
-						charger->regulator_name);
+				dev_err(cm->dev, "Cannot initialize charger(%s)\n",
+					charger->regulator_name);
 				goto err;
 			}
 			cable->charger = charger;
@@ -1347,10 +1343,8 @@ static ssize_t charger_externally_control_store(struct device *dev,
 		}
 	} else {
 		dev_warn(cm->dev,
-			"'%s' regulator should be controlled "
-			"in charger-manager because charger-manager "
-			"must need at least one charger for charging\n",
-			charger->regulator_name);
+			 "'%s' regulator should be controlled in charger-manager because charger-manager must need at least one charger for charging\n",
+			 charger->regulator_name);
 	}
 
 	return count;
@@ -1386,8 +1380,6 @@ static int charger_manager_register_sysfs(struct charger_manager *cm)
 		snprintf(buf, 10, "charger.%d", i);
 		str = kzalloc(sizeof(char) * (strlen(buf) + 1), GFP_KERNEL);
 		if (!str) {
-			dev_err(cm->dev, "Cannot allocate memory: %s\n",
-					charger->regulator_name);
 			ret = -ENOMEM;
 			goto err;
 		}
@@ -1423,26 +1415,21 @@ static int charger_manager_register_sysfs(struct charger_manager *cm)
 				!chargers_externally_control)
 			chargers_externally_control = 0;
 
-		dev_info(cm->dev, "'%s' regulator's externally_control"
-				"is %d\n", charger->regulator_name,
-				charger->externally_control);
+		dev_info(cm->dev, "'%s' regulator's externally_control is %d\n",
+			 charger->regulator_name, charger->externally_control);
 
 		ret = sysfs_create_group(&cm->charger_psy.dev->kobj,
 					&charger->attr_g);
 		if (ret < 0) {
-			dev_err(cm->dev, "Cannot create sysfs entry"
-					"of %s regulator\n",
-					charger->regulator_name);
+			dev_err(cm->dev, "Cannot create sysfs entry of %s regulator\n",
+				charger->regulator_name);
 			ret = -EINVAL;
 			goto err;
 		}
 	}
 
 	if (chargers_externally_control) {
-		dev_err(cm->dev, "Cannot register regulator because "
-				"charger-manager must need at least "
-				"one charger for charging battery\n");
-
+		dev_err(cm->dev, "Cannot register regulator because charger-manager must need at least one charger for charging battery\n");
 		ret = -EINVAL;
 		goto err;
 	}
@@ -1463,7 +1450,7 @@ static int charger_manager_probe(struct platform_device *pdev)
 		rtc_dev = rtc_class_open(g_desc->rtc_name);
 		if (IS_ERR_OR_NULL(rtc_dev)) {
 			rtc_dev = NULL;
-			dev_err(&pdev->dev, "Cannot get RTC %s.\n",
+			dev_err(&pdev->dev, "Cannot get RTC %s\n",
 				g_desc->rtc_name);
 			ret = -ENODEV;
 			goto err_alloc;
@@ -1471,14 +1458,13 @@ static int charger_manager_probe(struct platform_device *pdev)
 	}
 
 	if (!desc) {
-		dev_err(&pdev->dev, "No platform data (desc) found.\n");
+		dev_err(&pdev->dev, "No platform data (desc) found\n");
 		ret = -ENODEV;
 		goto err_alloc;
 	}
 
 	cm = kzalloc(sizeof(struct charger_manager), GFP_KERNEL);
 	if (!cm) {
-		dev_err(&pdev->dev, "Cannot allocate memory.\n");
 		ret = -ENOMEM;
 		goto err_alloc;
 	}
@@ -1487,7 +1473,6 @@ static int charger_manager_probe(struct platform_device *pdev)
 	cm->dev = &pdev->dev;
 	cm->desc = kmemdup(desc, sizeof(struct charger_desc), GFP_KERNEL);
 	if (!cm->desc) {
-		dev_err(&pdev->dev, "Cannot allocate memory.\n");
 		ret = -ENOMEM;
 		goto err_alloc_desc;
 	}
@@ -1498,33 +1483,28 @@ static int charger_manager_probe(struct platform_device *pdev)
 	 * Users may intentionally ignore those two features.
 	 */
 	if (desc->fullbatt_uV == 0) {
-		dev_info(&pdev->dev, "Ignoring full-battery voltage threshold"
-					" as it is not supplied.");
+		dev_info(&pdev->dev, "Ignoring full-battery voltage threshold as it is not supplied\n");
 	}
 	if (!desc->fullbatt_vchkdrop_ms || !desc->fullbatt_vchkdrop_uV) {
-		dev_info(&pdev->dev, "Disabling full-battery voltage drop "
-				"checking mechanism as it is not supplied.");
+		dev_info(&pdev->dev, "Disabling full-battery voltage drop checking mechanism as it is not supplied\n");
 		desc->fullbatt_vchkdrop_ms = 0;
 		desc->fullbatt_vchkdrop_uV = 0;
 	}
 	if (desc->fullbatt_soc == 0) {
-		dev_info(&pdev->dev, "Ignoring full-battery soc(state of"
-					" charge) threshold as it is not"
-					" supplied.");
+		dev_info(&pdev->dev, "Ignoring full-battery soc(state of charge) threshold as it is not supplied\n");
 	}
 	if (desc->fullbatt_full_capacity == 0) {
-		dev_info(&pdev->dev, "Ignoring full-battery full capacity"
-					" threshold as it is not supplied.");
+		dev_info(&pdev->dev, "Ignoring full-battery full capacity threshold as it is not supplied\n");
 	}
 
 	if (!desc->charger_regulators || desc->num_charger_regulators < 1) {
 		ret = -EINVAL;
-		dev_err(&pdev->dev, "charger_regulators undefined.\n");
+		dev_err(&pdev->dev, "charger_regulators undefined\n");
 		goto err_no_charger;
 	}
 
 	if (!desc->psy_charger_stat || !desc->psy_charger_stat[0]) {
-		dev_err(&pdev->dev, "No power supply defined.\n");
+		dev_err(&pdev->dev, "No power supply defined\n");
 		ret = -EINVAL;
 		goto err_no_charger_stat;
 	}
@@ -1544,9 +1524,8 @@ static int charger_manager_probe(struct platform_device *pdev)
 		cm->charger_stat[i] = power_supply_get_by_name(
 					desc->psy_charger_stat[i]);
 		if (!cm->charger_stat[i]) {
-			dev_err(&pdev->dev, "Cannot find power supply "
-					"\"%s\"\n",
-					desc->psy_charger_stat[i]);
+			dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",
+				desc->psy_charger_stat[i]);
 			ret = -ENODEV;
 			goto err_chg_stat;
 		}
@@ -1555,7 +1534,7 @@ static int charger_manager_probe(struct platform_device *pdev)
 	cm->fuel_gauge = power_supply_get_by_name(desc->psy_fuel_gauge);
 	if (!cm->fuel_gauge) {
 		dev_err(&pdev->dev, "Cannot find power supply \"%s\"\n",
-				desc->psy_fuel_gauge);
+			desc->psy_fuel_gauge);
 		ret = -ENODEV;
 		goto err_chg_stat;
 	}
@@ -1575,9 +1554,7 @@ static int charger_manager_probe(struct platform_device *pdev)
 
 	if (!desc->charging_max_duration_ms ||
 			!desc->discharging_max_duration_ms) {
-		dev_info(&pdev->dev, "Cannot limit charging duration "
-			 "checking mechanism to prevent overcharge/overheat "
-			 "and control discharging duration");
+		dev_info(&pdev->dev, "Cannot limit charging duration checking mechanism to prevent overcharge/overheat and control discharging duration\n");
 		desc->charging_max_duration_ms = 0;
 		desc->discharging_max_duration_ms = 0;
 	}
@@ -1598,7 +1575,6 @@ static int charger_manager_probe(struct platform_device *pdev)
 				NUM_CHARGER_PSY_OPTIONAL),
 				GFP_KERNEL);
 	if (!cm->charger_psy.properties) {
-		dev_err(&pdev->dev, "Cannot allocate for psy properties.\n");
 		ret = -ENOMEM;
 		goto err_chg_stat;
 	}
@@ -1636,8 +1612,8 @@ static int charger_manager_probe(struct platform_device *pdev)
 
 	ret = power_supply_register(NULL, &cm->charger_psy);
 	if (ret) {
-		dev_err(&pdev->dev, "Cannot register charger-manager with"
-				" name \"%s\".\n", cm->charger_psy.name);
+		dev_err(&pdev->dev, "Cannot register charger-manager with name \"%s\"\n",
+			cm->charger_psy.name);
 		goto err_register;
 	}
 
@@ -1689,7 +1665,9 @@ err_reg_extcon:
 		charger = &desc->charger_regulators[i];
 		for (j = 0; j < charger->num_cables; j++) {
 			struct charger_cable *cable = &charger->cables[j];
-			extcon_unregister_interest(&cable->extcon_dev);
+			/* Remove notifier block if only edev exists */
+			if (cable->extcon_dev.edev)
+				extcon_unregister_interest(&cable->extcon_dev);
 		}
 
 		regulator_put(desc->charger_regulators[i].consumer);
@@ -1948,7 +1926,7 @@ void cm_notify_event(struct power_supply *psy, enum cm_event_types type,
 		uevent_notify(cm, msg ? msg : default_event_names[type]);
 		break;
 	default:
-		dev_err(cm->dev, "%s type not specified.\n", __func__);
+		dev_err(cm->dev, "%s: type not specified\n", __func__);
 		break;
 	}
 }

drivers/power/generic-adc-battery.c

@@ -299,8 +299,10 @@ static int gab_probe(struct platform_device *pdev)
 	}
 
 	/* none of the channels are supported so let's bail out */
-	if (index == ARRAY_SIZE(gab_chan_name))
+	if (index == 0) {
+		ret = -ENODEV;
 		goto second_mem_fail;
+	}
 
 	/*
 	 * Total number of properties is equal to static properties

drivers/power/gpio-charger.c

@@ -155,8 +155,6 @@ static int gpio_charger_remove(struct platform_device *pdev)
 
 	gpio_free(gpio_charger->pdata->gpio);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }
 

drivers/power/intel_mid_battery.c

@@ -756,7 +756,7 @@ static int platform_pmic_battery_probe(struct platform_device *pdev)
 
 static int platform_pmic_battery_remove(struct platform_device *pdev)
 {
-	struct pmic_power_module_info *pbi = dev_get_drvdata(&pdev->dev);
+	struct pmic_power_module_info *pbi = platform_get_drvdata(pdev);
 
 	free_irq(pbi->irq, pbi);
 	cancel_delayed_work_sync(&pbi->monitor_battery);

drivers/power/jz4740-battery.c

@@ -292,7 +292,7 @@ static int jz_battery_probe(struct platform_device *pdev)
 			jz_battery);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to request irq %d\n", ret);
-		goto err;
+		return ret;
 	}
 	disable_irq(jz_battery->irq);
 
@@ -349,8 +349,6 @@ err_free_gpio:
 		gpio_free(jz_battery->pdata->gpio_charge);
 err_free_irq:
 	free_irq(jz_battery->irq, jz_battery);
-err:
-	platform_set_drvdata(pdev, NULL);
 	return ret;
 }
 

drivers/power/lp8727_charger.c

@@ -16,6 +16,7 @@
 #include <linux/i2c.h>
 #include <linux/power_supply.h>
 #include <linux/platform_data/lp8727.h>
+#include <linux/of.h>
 
 #define LP8788_NUM_INTREGS	2
 #define DEFAULT_DEBOUNCE_MSEC	270
@@ -481,6 +482,60 @@ static void lp8727_unregister_psy(struct lp8727_chg *pchg)
 	power_supply_unregister(&psy->batt);
 }
 
+#ifdef CONFIG_OF
+static struct lp8727_chg_param
+*lp8727_parse_charge_pdata(struct device *dev, struct device_node *np)
+{
+	struct lp8727_chg_param *param;
+
+	param = devm_kzalloc(dev, sizeof(*param), GFP_KERNEL);
+	if (!param)
+		goto out;
+
+	of_property_read_u8(np, "eoc-level", (u8 *)&param->eoc_level);
+	of_property_read_u8(np, "charging-current", (u8 *)&param->ichg);
+out:
+	return param;
+}
+
+static int lp8727_parse_dt(struct device *dev)
+{
+	struct device_node *np = dev->of_node;
+	struct device_node *child;
+	struct lp8727_platform_data *pdata;
+	const char *type;
+
+	/* If charging parameter is not defined, just skip parsing the dt */
+	if (of_get_child_count(np) == 0)
+		goto out;
+
+	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return -ENOMEM;
+
+	of_property_read_u32(np, "debounce-ms", &pdata->debounce_msec);
+
+	for_each_child_of_node(np, child) {
+		of_property_read_string(child, "charger-type", &type);
+
+		if (!strcmp(type, "ac"))
+			pdata->ac = lp8727_parse_charge_pdata(dev, child);
+
+		if (!strcmp(type, "usb"))
+			pdata->usb = lp8727_parse_charge_pdata(dev, child);
+	}
+
+	dev->platform_data = pdata;
+out:
+	return 0;
+}
+#else
+static int lp8727_parse_dt(struct device *dev)
+{
+	return 0;
+}
+#endif
+
 static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
 {
 	struct lp8727_chg *pchg;
@@ -489,6 +544,12 @@ static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
 	if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
 		return -EIO;
 
+	if (cl->dev.of_node) {
+		ret = lp8727_parse_dt(&cl->dev);
+		if (ret)
+			return ret;
+	}
+
 	pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL);
 	if (!pchg)
 		return -ENOMEM;
@@ -531,6 +592,12 @@ static int lp8727_remove(struct i2c_client *cl)
 	return 0;
 }
 
+static const struct of_device_id lp8727_dt_ids[] = {
+	{ .compatible = "ti,lp8727", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, lp8727_dt_ids);
+
 static const struct i2c_device_id lp8727_ids[] = {
 	{"lp8727", 0},
 	{ }
@@ -540,6 +607,7 @@ MODULE_DEVICE_TABLE(i2c, lp8727_ids);
 static struct i2c_driver lp8727_driver = {
 	.driver = {
 		   .name = "lp8727",
+		   .of_match_table = of_match_ptr(lp8727_dt_ids),
 		   },
 	.probe = lp8727_probe,
 	.remove = lp8727_remove,

drivers/power/pcf50633-charger.c

@@ -191,9 +191,9 @@ static ssize_t set_usblim(struct device *dev,
 	unsigned long ma;
 	int ret;
 
-	ret = strict_strtoul(buf, 10, &ma);
+	ret = kstrtoul(buf, 10, &ma);
 	if (ret)
-		return -EINVAL;
+		return ret;
 
 	pcf50633_mbc_usb_curlim_set(mbc->pcf, ma);
 
@@ -228,9 +228,9 @@ static ssize_t set_chglim(struct device *dev,
 	if (!mbc->pcf->pdata->charger_reference_current_ma)
 		return -ENODEV;
 
-	ret = strict_strtoul(buf, 10, &ma);
+	ret = kstrtoul(buf, 10, &ma);
 	if (ret)
-		return -EINVAL;
+		return ret;
 
 	mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
 	if (mbcc5 > 255)

drivers/power/pm2301_charger.c

@@ -1007,9 +1007,14 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 	u8 val;
 	int i;
 
+	if (!pl_data) {
+		dev_err(&i2c_client->dev, "No platform data supplied\n");
+		return -EINVAL;
+	}
+
 	pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL);
 	if (!pm2) {
-		dev_err(pm2->dev, "pm2xxx_charger allocation failed\n");
+		dev_err(&i2c_client->dev, "pm2xxx_charger allocation failed\n");
 		return -ENOMEM;
 	}
 
@@ -1070,9 +1075,9 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client,
 	pm2->ac_chg.external = true;
 
 	/* Create a work queue for the charger */
-	pm2->charger_wq =
-		create_singlethread_workqueue("pm2xxx_charger_wq");
+	pm2->charger_wq = create_singlethread_workqueue("pm2xxx_charger_wq");
 	if (pm2->charger_wq == NULL) {
+		ret = -ENOMEM;
 		dev_err(pm2->dev, "failed to create work queue\n");
 		goto free_device_info;
 	}

drivers/power/power_supply_core.c

@@ -109,8 +109,10 @@ static int __power_supply_populate_supplied_from(struct device *dev,
 				psy->name, epsy->name);
 			psy->supplied_from[i-1] = (char *)epsy->name;
 			psy->num_supplies++;
+			of_node_put(np);
 			break;
 		}
+		of_node_put(np);
 	} while (np);
 
 	return 0;
@@ -193,8 +195,10 @@ static int power_supply_check_supplies(struct power_supply *psy)
 		ret = power_supply_find_supply_from_node(np);
 		if (ret) {
 			dev_dbg(psy->dev, "Failed to find supply, defer!\n");
+			of_node_put(np);
 			return -EPROBE_DEFER;
 		}
+		of_node_put(np);
 	} while (np);
 
 	/* All supplies found, allocate char ** array for filling */

drivers/power/reset/Kconfig

@@ -32,7 +32,8 @@ config POWER_RESET_RESTART
 	  user presses a key. u-boot then boots into Linux.
 
 config POWER_RESET_VEXPRESS
-	bool
+	bool "ARM Versatile Express power-off and reset driver"
+	depends on ARM || ARM64
 	depends on POWER_RESET
 	help
 	  Power off and reset support for the ARM Ltd. Versatile

drivers/power/rx51_battery.c

@@ -216,10 +216,8 @@ static int rx51_battery_probe(struct platform_device *pdev)
 	di->bat.get_property = rx51_battery_get_property;
 
 	ret = power_supply_register(di->dev, &di->bat);
-	if (ret) {
-		platform_set_drvdata(pdev, NULL);
+	if (ret)
 		return ret;
-	}
 
 	return 0;
 }
@@ -229,7 +227,6 @@ static int rx51_battery_remove(struct platform_device *pdev)
 	struct rx51_device_info *di = platform_get_drvdata(pdev);
 
 	power_supply_unregister(&di->bat);
-	platform_set_drvdata(pdev, NULL);
 
 	return 0;
 }

drivers/power/sbs-battery.c

@@ -704,6 +704,7 @@ static int sbs_probe(struct i2c_client *client,
 	chip->power_supply.properties = sbs_properties;
 	chip->power_supply.num_properties = ARRAY_SIZE(sbs_properties);
 	chip->power_supply.get_property = sbs_get_property;
+	chip->power_supply.of_node = client->dev.of_node;
 	/* ignore first notification of external change, it is generated
 	 * from the power_supply_register call back
 	 */

drivers/power/tps65090-charger.c

@@ -27,6 +27,7 @@
 #include <linux/mfd/tps65090.h>
 
 #define TPS65090_REG_INTR_STS	0x00
+#define TPS65090_REG_INTR_MASK	0x02
 #define TPS65090_REG_CG_CTRL0	0x04
 #define TPS65090_REG_CG_CTRL1	0x05
 #define TPS65090_REG_CG_CTRL2	0x06
@@ -67,8 +68,7 @@ static int tps65090_low_chrg_current(struct tps65090_charger *charger)
 	return 0;
 }
 
-static int tps65090_enable_charging(struct tps65090_charger *charger,
-	uint8_t enable)
+static int tps65090_enable_charging(struct tps65090_charger *charger)
 {
 	int ret;
 	uint8_t ctrl0 = 0;
@@ -84,7 +84,7 @@ static int tps65090_enable_charging(struct tps65090_charger *charger,
 	ret = tps65090_write(charger->dev->parent, TPS65090_REG_CG_CTRL0,
 				(ctrl0 | TPS65090_CHARGER_ENABLE));
 	if (ret < 0) {
-		dev_err(charger->dev, "%s(): error reading in register 0x%x\n",
+		dev_err(charger->dev, "%s(): error writing in register 0x%x\n",
 				__func__, TPS65090_REG_CG_CTRL0);
 		return ret;
 	}
@@ -93,6 +93,7 @@ static int tps65090_enable_charging(struct tps65090_charger *charger,
 
 static int tps65090_config_charger(struct tps65090_charger *charger)
 {
+	uint8_t intrmask = 0;
 	int ret;
 
 	if (charger->pdata->enable_low_current_chrg) {
@@ -104,6 +105,23 @@ static int tps65090_config_charger(struct tps65090_charger *charger)
 		}
 	}
 
+	/* Enable the VACG interrupt for AC power detect */
+	ret = tps65090_read(charger->dev->parent, TPS65090_REG_INTR_MASK,
+			    &intrmask);
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): error reading in register 0x%x\n",
+			__func__, TPS65090_REG_INTR_MASK);
+		return ret;
+	}
+
+	ret = tps65090_write(charger->dev->parent, TPS65090_REG_INTR_MASK,
+			     (intrmask | TPS65090_VACG));
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): error writing in register 0x%x\n",
+			__func__, TPS65090_REG_CG_CTRL0);
+		return ret;
+	}
+
 	return 0;
 }
 
@@ -146,7 +164,7 @@ static irqreturn_t tps65090_charger_isr(int irq, void *dev_id)
 	}
 
 	if (intrsts & TPS65090_VACG) {
-		ret = tps65090_enable_charging(charger, 1);
+		ret = tps65090_enable_charging(charger);
 		if (ret < 0)
 			return IRQ_HANDLED;
 		charger->ac_online = 1;
@@ -154,6 +172,13 @@ static irqreturn_t tps65090_charger_isr(int irq, void *dev_id)
 		charger->ac_online = 0;
 	}
 
+	/* Clear interrupts. */
+	ret = tps65090_write(charger->dev->parent, TPS65090_REG_INTR_STS, 0x00);
+	if (ret < 0) {
+		dev_err(charger->dev, "%s(): Error in writing reg 0x%x\n",
+				__func__, TPS65090_REG_INTR_STS);
+	}
+
 	if (charger->prev_ac_online != charger->ac_online)
 		power_supply_changed(&charger->ac);
 
@@ -218,7 +243,7 @@ static int tps65090_charger_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	dev_set_drvdata(&pdev->dev, cdata);
+	platform_set_drvdata(pdev, cdata);
 
 	cdata->dev			= &pdev->dev;
 	cdata->pdata			= pdata;
@@ -230,6 +255,7 @@ static int tps65090_charger_probe(struct platform_device *pdev)
 	cdata->ac.num_properties	= ARRAY_SIZE(tps65090_ac_props);
 	cdata->ac.supplied_to		= pdata->supplied_to;
 	cdata->ac.num_supplicants	= pdata->num_supplicants;
+	cdata->ac.of_node		= pdev->dev.of_node;
 
 	ret = power_supply_register(&pdev->dev, &cdata->ac);
 	if (ret) {
@@ -270,7 +296,7 @@ static int tps65090_charger_probe(struct platform_device *pdev)
 	}
 
 	if (status1 != 0) {
-		ret = tps65090_enable_charging(cdata, 1);
+		ret = tps65090_enable_charging(cdata);
 		if (ret < 0) {
 			dev_err(cdata->dev, "error enabling charger\n");
 			goto fail_free_irq;
@@ -291,7 +317,7 @@ fail_unregister_supply:
 
 static int tps65090_charger_remove(struct platform_device *pdev)
 {
-	struct tps65090_charger *cdata = dev_get_drvdata(&pdev->dev);
+	struct tps65090_charger *cdata = platform_get_drvdata(pdev);
 
 	devm_free_irq(cdata->dev, cdata->irq, cdata);
 	power_supply_unregister(&cdata->ac);

drivers/power/twl4030_charger.c

@@ -594,7 +594,6 @@ fail_chg_irq:
 fail_register_usb:
 	power_supply_unregister(&bci->ac);
 fail_register_ac:
-	platform_set_drvdata(pdev, NULL);
 	kfree(bci);
 
 	return ret;
@@ -622,7 +621,6 @@ static int __exit twl4030_bci_remove(struct platform_device *pdev)
 	free_irq(bci->irq_chg, bci);
 	power_supply_unregister(&bci->usb);
 	power_supply_unregister(&bci->ac);
-	platform_set_drvdata(pdev, NULL);
 	kfree(bci);
 
 	return 0;

include/linux/power_supply.h

@@ -162,6 +162,8 @@ union power_supply_propval {
 	const char *strval;
 };
 
+struct device_node;
+
 struct power_supply {
 	const char *name;
 	enum power_supply_type type;
@@ -173,9 +175,7 @@ struct power_supply {
 
 	char **supplied_from;
 	size_t num_supplies;
-#ifdef CONFIG_OF
 	struct device_node *of_node;
-#endif
 
 	int (*get_property)(struct power_supply *psy,
 			    enum power_supply_property psp,