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[2/9] power: supply: bq27xxx: Fix I2C IRQ race on remove

Message ID 20230413095405.71685-3-hdegoede@redhat.com
State Superseded
Headers show
Series [1/9] power: supply: bq27xxx: Fix bq27xxx_battery_update() race condition | expand

Commit Message

Hans de Goede April 13, 2023, 9:53 a.m. UTC 
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: 8807feb91b76 ("power: bq27xxx_battery: Add interrupt handling support")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/power/supply/bq27xxx_battery_i2c.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/power/supply/bq27xxx_battery_i2c.c b/drivers/power/supply/bq27xxx_battery_i2c.c
index f8768997333b..6d3c74876339 100644
--- a/drivers/power/supply/bq27xxx_battery_i2c.c
+++ b/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);