linux-kernel - [PATCH 4/5] power: supply: bq27xxx: Use devm_power_supply

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 23 Jan 2024 09:09:13 -0600
From: Andrew Davis <afd@...com>
To: Pali Rohár <pali@...nel.org>,
        Sebastian Reichel
	<sre@...nel.org>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Andrew Davis
	<afd@...com>
Subject: [PATCH 4/5] power: supply: bq27xxx: 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/bq27xxx_battery.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index d3b6327b16b56..2bf5e007f16b2 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -2140,7 +2140,7 @@ int bq27xxx_battery_setup(struct bq27xxx_device_info *di)
 	psy_desc->get_property = bq27xxx_battery_get_property;
 	psy_desc->external_power_changed = bq27xxx_external_power_changed;
 
-	di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
+	di->bat = devm_power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
 	if (IS_ERR(di->bat))
 		return dev_err_probe(di->dev, PTR_ERR(di->bat),
 				     "failed to register battery\n");
@@ -2168,8 +2168,6 @@ void bq27xxx_battery_teardown(struct bq27xxx_device_info *di)
 	mutex_unlock(&di->lock);
 
 	cancel_delayed_work_sync(&di->work);
-
-	power_supply_unregister(di->bat);
 }
 EXPORT_SYMBOL_GPL(bq27xxx_battery_teardown);
 
-- 
2.39.2