Merge tag 'for-v6.4-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply fixes from Sebastian Reichel:

 - Fix power_supply_get_battery_info for devices without parent devices
   resulting in NULL pointer dereference

 - Fix desktop systems reporting to run on battery once a power-supply
   device with device scope appears (e.g. a HID keyboard with a battery)

 - Ratelimit debug print about driver not providing data

 - Fix race condition related to external_power_changed in multiple
   drivers (ab8500, axp288, bq25890, sc27xx, bq27xxx)

 - Fix LED trigger switching from blinking to solid-on when charging
   finishes

 - Fix multiple races in bq27xxx battery driver

 - mt6360: handle potential ENOMEM from devm_work_autocancel

 - sbs-charger: Fix SBS_CHARGER_STATUS_CHARGE_INHIBITED bit

 - rt9467: avoid passing 0 to dev_err_probe

* tag 'for-v6.4-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (21 commits)
  power: supply: Fix logic checking if system is running from battery
  power: supply: mt6360: add a check of devm_work_autocancel in mt6360_charger_probe
  power: supply: sbs-charger: Fix INHIBITED bit for Status reg
  power: supply: rt9467: Fix passing zero to 'dev_err_probe'
  power: supply: Ratelimit no data debug output
  power: supply: Fix power_supply_get_battery_info() if parent is NULL
  power: supply: bq24190: Call power_supply_changed() after updating input current
  power: supply: bq25890: Call power_supply_changed() after updating input current or voltage
  power: supply: bq27xxx: Use mod_delayed_work() instead of cancel() + schedule()
  power: supply: bq27xxx: After charger plug in/out wait 0.5s for things to stabilize
  power: supply: bq27xxx: Ensure power_supply_changed() is called on current sign changes
  power: supply: bq27xxx: Move bq27xxx_battery_update() down
  power: supply: bq27xxx: Add cache parameter to bq27xxx_battery_current_and_status()
  power: supply: bq27xxx: Fix poll_interval handling and races on remove
  power: supply: bq27xxx: Fix I2C IRQ race on remove
  power: supply: bq27xxx: Fix bq27xxx_battery_update() race condition
  power: supply: leds: Fix blink to LED on transition
  power: supply: sc27xx: Fix external_power_changed race
  power: supply: bq25890: Fix external_power_changed race
  power: supply: axp288_fuel_gauge: Fix external_power_changed race
  ...

Author: torvalds

drivers/power/supply/ab8500_btemp.c

@@ -624,10 +624,8 @@ static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data)
  */
 static void ab8500_btemp_external_power_changed(struct power_supply *psy)
 {
-	struct ab8500_btemp *di = power_supply_get_drvdata(psy);
-
-	class_for_each_device(power_supply_class, NULL,
-		di->btemp_psy, ab8500_btemp_get_ext_psy_data);
+	class_for_each_device(power_supply_class, NULL, psy,
+			      ab8500_btemp_get_ext_psy_data);
 }
 
 /* ab8500 btemp driver interrupts and their respective isr */

drivers/power/supply/ab8500_fg.c

@@ -2407,10 +2407,8 @@ static int ab8500_fg_init_hw_registers(struct ab8500_fg *di)
  */
 static void ab8500_fg_external_power_changed(struct power_supply *psy)
 {
-	struct ab8500_fg *di = power_supply_get_drvdata(psy);
-
-	class_for_each_device(power_supply_class, NULL,
-		di->fg_psy, ab8500_fg_get_ext_psy_data);
+	class_for_each_device(power_supply_class, NULL, psy,
+			      ab8500_fg_get_ext_psy_data);
 }
 
 /**

drivers/power/supply/axp288_fuel_gauge.c

@@ -507,7 +507,7 @@ static void fuel_gauge_external_power_changed(struct power_supply *psy)
 	mutex_lock(&info->lock);
 	info->valid = 0; /* Force updating of the cached registers */
 	mutex_unlock(&info->lock);
-	power_supply_changed(info->bat);
+	power_supply_changed(psy);
 }
 
 static struct power_supply_desc fuel_gauge_desc = {

drivers/power/supply/bq24190_charger.c

@@ -1262,6 +1262,7 @@ static void bq24190_input_current_limit_work(struct work_struct *work)
 	bq24190_charger_set_property(bdi->charger,
 				     POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 				     &val);
+	power_supply_changed(bdi->charger);
 }
 
 /* Sync the input-current-limit with our parent supply (if we have one) */

drivers/power/supply/bq25890_charger.c

@@ -750,7 +750,7 @@ static void bq25890_charger_external_power_changed(struct power_supply *psy)
 	if (bq->chip_version != BQ25892)
 		return;
 
-	ret = power_supply_get_property_from_supplier(bq->charger,
+	ret = power_supply_get_property_from_supplier(psy,
 						      POWER_SUPPLY_PROP_USB_TYPE,
 						      &val);
 	if (ret)
@@ -775,6 +775,7 @@ static void bq25890_charger_external_power_changed(struct power_supply *psy)
 	}
 
 	bq25890_field_write(bq, F_IINLIM, input_current_limit);
+	power_supply_changed(psy);
 }
 
 static int bq25890_get_chip_state(struct bq25890_device *bq,
@@ -1106,6 +1107,8 @@ static void bq25890_pump_express_work(struct work_struct *data)
 	dev_info(bq->dev, "Hi-voltage charging requested, input voltage is %d mV\n",
 		 voltage);
 
+	power_supply_changed(bq->charger);
+
 	return;
 error_print:
 	bq25890_field_write(bq, F_PUMPX_EN, 0);

drivers/power/supply/bq27xxx_battery.c

@@ -1083,10 +1083,8 @@ static int poll_interval_param_set(const char *val, const struct kernel_param *k
 		return ret;
 
 	mutex_lock(&bq27xxx_list_lock);
-	list_for_each_entry(di, &bq27xxx_battery_devices, list) {
-		cancel_delayed_work_sync(&di->work);
-		schedule_delayed_work(&di->work, 0);
-	}
+	list_for_each_entry(di, &bq27xxx_battery_devices, list)
+		mod_delayed_work(system_wq, &di->work, 0);
 	mutex_unlock(&bq27xxx_list_lock);
 
 	return ret;
@@ -1761,60 +1759,6 @@ static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di)
 	return POWER_SUPPLY_HEALTH_GOOD;
 }
 
-void bq27xxx_battery_update(struct bq27xxx_device_info *di)
-{
-	struct bq27xxx_reg_cache cache = {0, };
-	bool has_singe_flag = di->opts & BQ27XXX_O_ZERO;
-
-	cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag);
-	if ((cache.flags & 0xff) == 0xff)
-		cache.flags = -1; /* read error */
-	if (cache.flags >= 0) {
-		cache.temperature = bq27xxx_battery_read_temperature(di);
-		if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR)
-			cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE);
-		if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR)
-			cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP);
-		if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR)
-			cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF);
-
-		cache.charge_full = bq27xxx_battery_read_fcc(di);
-		cache.capacity = bq27xxx_battery_read_soc(di);
-		if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR)
-			cache.energy = bq27xxx_battery_read_energy(di);
-		di->cache.flags = cache.flags;
-		cache.health = bq27xxx_battery_read_health(di);
-		if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR)
-			cache.cycle_count = bq27xxx_battery_read_cyct(di);
-
-		/* We only have to read charge design full once */
-		if (di->charge_design_full <= 0)
-			di->charge_design_full = bq27xxx_battery_read_dcap(di);
-	}
-
-	if ((di->cache.capacity != cache.capacity) ||
-	    (di->cache.flags != cache.flags))
-		power_supply_changed(di->bat);
-
-	if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)
-		di->cache = cache;
-
-	di->last_update = jiffies;
-}
-EXPORT_SYMBOL_GPL(bq27xxx_battery_update);
-
-static void bq27xxx_battery_poll(struct work_struct *work)
-{
-	struct bq27xxx_device_info *di =
-			container_of(work, struct bq27xxx_device_info,
-				     work.work);
-
-	bq27xxx_battery_update(di);
-
-	if (poll_interval > 0)
-		schedule_delayed_work(&di->work, poll_interval * HZ);
-}
-
 static bool bq27xxx_battery_is_full(struct bq27xxx_device_info *di, int flags)
 {
 	if (di->opts & BQ27XXX_O_ZERO)
@@ -1833,7 +1777,8 @@ static bool bq27xxx_battery_is_full(struct bq27xxx_device_info *di, int flags)
 static int bq27xxx_battery_current_and_status(
 	struct bq27xxx_device_info *di,
 	union power_supply_propval *val_curr,
-	union power_supply_propval *val_status)
+	union power_supply_propval *val_status,
+	struct bq27xxx_reg_cache *cache)
 {
 	bool single_flags = (di->opts & BQ27XXX_O_ZERO);
 	int curr;
@@ -1845,10 +1790,14 @@ static int bq27xxx_battery_current_and_status(
 		return curr;
 	}
 
-	flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, single_flags);
-	if (flags < 0) {
-		dev_err(di->dev, "error reading flags\n");
-		return flags;
+	if (cache) {
+		flags = cache->flags;
+	} else {
+		flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, single_flags);
+		if (flags < 0) {
+			dev_err(di->dev, "error reading flags\n");
+			return flags;
+		}
 	}
 
 	if (di->opts & BQ27XXX_O_ZERO) {
@@ -1883,6 +1832,78 @@ static int bq27xxx_battery_current_and_status(
 	return 0;
 }
 
+static void bq27xxx_battery_update_unlocked(struct bq27xxx_device_info *di)
+{
+	union power_supply_propval status = di->last_status;
+	struct bq27xxx_reg_cache cache = {0, };
+	bool has_singe_flag = di->opts & BQ27XXX_O_ZERO;
+
+	cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag);
+	if ((cache.flags & 0xff) == 0xff)
+		cache.flags = -1; /* read error */
+	if (cache.flags >= 0) {
+		cache.temperature = bq27xxx_battery_read_temperature(di);
+		if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR)
+			cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE);
+		if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR)
+			cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP);
+		if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR)
+			cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF);
+
+		cache.charge_full = bq27xxx_battery_read_fcc(di);
+		cache.capacity = bq27xxx_battery_read_soc(di);
+		if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR)
+			cache.energy = bq27xxx_battery_read_energy(di);
+		di->cache.flags = cache.flags;
+		cache.health = bq27xxx_battery_read_health(di);
+		if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR)
+			cache.cycle_count = bq27xxx_battery_read_cyct(di);
+
+		/*
+		 * On gauges with signed current reporting the current must be
+		 * checked to detect charging <-> discharging status changes.
+		 */
+		if (!(di->opts & BQ27XXX_O_ZERO))
+			bq27xxx_battery_current_and_status(di, NULL, &status, &cache);
+
+		/* We only have to read charge design full once */
+		if (di->charge_design_full <= 0)
+			di->charge_design_full = bq27xxx_battery_read_dcap(di);
+	}
+
+	if ((di->cache.capacity != cache.capacity) ||
+	    (di->cache.flags != cache.flags) ||
+	    (di->last_status.intval != status.intval)) {
+		di->last_status.intval = status.intval;
+		power_supply_changed(di->bat);
+	}
+
+	if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)
+		di->cache = cache;
+
+	di->last_update = jiffies;
+
+	if (!di->removed && poll_interval > 0)
+		mod_delayed_work(system_wq, &di->work, poll_interval * HZ);
+}
+
+void bq27xxx_battery_update(struct bq27xxx_device_info *di)
+{
+	mutex_lock(&di->lock);
+	bq27xxx_battery_update_unlocked(di);
+	mutex_unlock(&di->lock);
+}
+EXPORT_SYMBOL_GPL(bq27xxx_battery_update);
+
+static void bq27xxx_battery_poll(struct work_struct *work)
+{
+	struct bq27xxx_device_info *di =
+			container_of(work, struct bq27xxx_device_info,
+				     work.work);
+
+	bq27xxx_battery_update(di);
+}
+
 /*
  * Get the average power in µW
  * Return < 0 if something fails.
@@ -1985,18 +2006,16 @@ static int bq27xxx_battery_get_property(struct power_supply *psy,
 	struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
 
 	mutex_lock(&di->lock);
-	if (time_is_before_jiffies(di->last_update + 5 * HZ)) {
-		cancel_delayed_work_sync(&di->work);
-		bq27xxx_battery_poll(&di->work.work);
-	}
+	if (time_is_before_jiffies(di->last_update + 5 * HZ))
+		bq27xxx_battery_update_unlocked(di);
 	mutex_unlock(&di->lock);
 
 	if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)
 		return -ENODEV;
 
 	switch (psp) {
 	case POWER_SUPPLY_PROP_STATUS:
-		ret = bq27xxx_battery_current_and_status(di, NULL, val);
+		ret = bq27xxx_battery_current_and_status(di, NULL, val, NULL);
 		break;
 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 		ret = bq27xxx_battery_voltage(di, val);
@@ -2005,7 +2024,7 @@ static int bq27xxx_battery_get_property(struct power_supply *psy,
 		val->intval = di->cache.flags < 0 ? 0 : 1;
 		break;
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
-		ret = bq27xxx_battery_current_and_status(di, val, NULL);
+		ret = bq27xxx_battery_current_and_status(di, val, NULL, NULL);
 		break;
 	case POWER_SUPPLY_PROP_CAPACITY:
 		ret = bq27xxx_simple_value(di->cache.capacity, val);
@@ -2078,8 +2097,8 @@ static void bq27xxx_external_power_changed(struct power_supply *psy)
 {
 	struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
 
-	cancel_delayed_work_sync(&di->work);
-	schedule_delayed_work(&di->work, 0);
+	/* After charger plug in/out wait 0.5s for things to stabilize */
+	mod_delayed_work(system_wq, &di->work, HZ / 2);
 }
 
 int bq27xxx_battery_setup(struct bq27xxx_device_info *di)
@@ -2127,22 +2146,18 @@ EXPORT_SYMBOL_GPL(bq27xxx_battery_setup);
 
 void bq27xxx_battery_teardown(struct bq27xxx_device_info *di)
 {
-	/*
-	 * power_supply_unregister call bq27xxx_battery_get_property which
-	 * call bq27xxx_battery_poll.
-	 * Make sure that bq27xxx_battery_poll will not call
-	 * schedule_delayed_work again after unregister (which cause OOPS).
-	 */
-	poll_interval = 0;
-
-	cancel_delayed_work_sync(&di->work);
-
-	power_supply_unregister(di->bat);
-
 	mutex_lock(&bq27xxx_list_lock);
 	list_del(&di->list);
 	mutex_unlock(&bq27xxx_list_lock);
 
+	/* Set removed to avoid bq27xxx_battery_update() re-queuing the work */
+	mutex_lock(&di->lock);
+	di->removed = true;
+	mutex_unlock(&di->lock);
+
+	cancel_delayed_work_sync(&di->work);
+
+	power_supply_unregister(di->bat);
 	mutex_destroy(&di->lock);
 }
 EXPORT_SYMBOL_GPL(bq27xxx_battery_teardown);

drivers/power/supply/bq27xxx_battery_i2c.c

@@ -179,7 +179,7 @@ static int bq27xxx_battery_i2c_probe(struct i2c_client *client)
 	i2c_set_clientdata(client, di);
 
 	if (client->irq) {
-		ret = devm_request_threaded_irq(&client->dev, client->irq,
+		ret = request_threaded_irq(client->irq,
 				NULL, bq27xxx_battery_irq_handler_thread,
 				IRQF_ONESHOT,
 				di->name, di);
@@ -209,6 +209,7 @@ static void bq27xxx_battery_i2c_remove(struct i2c_client *client)
 {
 	struct bq27xxx_device_info *di = i2c_get_clientdata(client);
 
+	free_irq(client->irq, di);
 	bq27xxx_battery_teardown(di);
 
 	mutex_lock(&battery_mutex);

drivers/power/supply/mt6360_charger.c

@@ -796,7 +796,9 @@ static int mt6360_charger_probe(struct platform_device *pdev)
 	mci->vinovp = 6500000;
 	mutex_init(&mci->chgdet_lock);
 	platform_set_drvdata(pdev, mci);
-	devm_work_autocancel(&pdev->dev, &mci->chrdet_work, mt6360_chrdet_work);
+	ret = devm_work_autocancel(&pdev->dev, &mci->chrdet_work, mt6360_chrdet_work);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "Failed to set delayed work\n");
 
 	ret = device_property_read_u32(&pdev->dev, "richtek,vinovp-microvolt", &mci->vinovp);
 	if (ret)