diff options
| author | Andrew Davis <afd@ti.com> | 2024-01-23 09:09:11 -0600 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2024-01-27 00:49:17 +0100 |
| commit | 73697f0acc773a357946a3c5a917bfb4c85128a3 (patch) | |
| tree | 6828f5d4c6f83347e0229ba7bc39001cdedc13ad /drivers/power | |
| parent | 67d85ee4bc749ee94cdfe9638618a506638d1926 (diff) | |
power: supply: bq27xxx: Add devm action to free IDA
Use a device lifecycle managed action to free the IDA. This helps
prevent mistakes like freeing out of order in cleanup functions and
forgetting to free on error paths.
Signed-off-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240123150914.308510-2-afd@ti.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/bq27xxx_battery_i2c.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/drivers/power/supply/bq27xxx_battery_i2c.c b/drivers/power/supply/bq27xxx_battery_i2c.c index 86ce13a8ab9d..019f29d13d28 100644 --- a/drivers/power/supply/bq27xxx_battery_i2c.c +++ b/drivers/power/supply/bq27xxx_battery_i2c.c @@ -135,28 +135,39 @@ static int bq27xxx_battery_i2c_bulk_write(struct bq27xxx_device_info *di, return 0; } +static void bq27xxx_battery_i2c_devm_ida_free(void *data) +{ + int num = (long)data; + + ida_free(&battery_id, num); +} + static int bq27xxx_battery_i2c_probe(struct i2c_client *client) { const struct i2c_device_id *id = i2c_client_get_device_id(client); struct bq27xxx_device_info *di; int ret; char *name; - int num; + long num; /* Get new ID for the new battery device */ num = ida_alloc(&battery_id, GFP_KERNEL); if (num < 0) return num; + ret = devm_add_action_or_reset(&client->dev, + bq27xxx_battery_i2c_devm_ida_free, + (void *)num); + if (ret) + return ret; - name = devm_kasprintf(&client->dev, GFP_KERNEL, "%s-%d", id->name, num); + name = devm_kasprintf(&client->dev, GFP_KERNEL, "%s-%ld", id->name, num); if (!name) - goto err_mem; + return -ENOMEM; di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL); if (!di) - goto err_mem; + return -ENOMEM; - di->id = num; di->dev = &client->dev; di->chip = id->driver_data; di->name = name; @@ -168,7 +179,7 @@ static int bq27xxx_battery_i2c_probe(struct i2c_client *client) ret = bq27xxx_battery_setup(di); if (ret) - goto err_failed; + return ret; /* Schedule a polling after about 1 min */ schedule_delayed_work(&di->work, 60 * HZ); @@ -185,19 +196,11 @@ static int bq27xxx_battery_i2c_probe(struct i2c_client *client) "Unable to register IRQ %d error %d\n", client->irq, ret); bq27xxx_battery_teardown(di); - goto err_failed; + return ret; } } return 0; - -err_mem: - ret = -ENOMEM; - -err_failed: - ida_free(&battery_id, num); - - return ret; } static void bq27xxx_battery_i2c_remove(struct i2c_client *client) @@ -206,8 +209,6 @@ static void bq27xxx_battery_i2c_remove(struct i2c_client *client) free_irq(client->irq, di); bq27xxx_battery_teardown(di); - - ida_free(&battery_id, di->id); } static const struct i2c_device_id bq27xxx_i2c_id_table[] = { |