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Code Issues Releases Wiki Activity

power: supply: bq27xxx: Fix I2C IRQ race on remove 

devm_request_threaded_irq() requested IRQs are only free-ed after
the driver's remove function has ran. So the IRQ could trigger and
call bq27xxx_battery_update() after bq27xxx_battery_teardown() has
already run.

Switch to explicitly free-ing the IRQ in bq27xxx_battery_i2c_remove()
to fix this.

Fixes: 8807feb91b ("power: bq27xxx_battery: Add interrupt handling support")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Hans de Goede 2023-04-15 20:23:33 +02:00 committed by Sebastian Reichel
parent 5c34c0aef1
commit 444ff00734
1 changed files with 2 additions and 1 deletions
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3
drivers/power/supply/bq27xxx_battery_i2c.c
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@ -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);