[PATCH v2] power: supply: bq27xxx: Fix kernel crash on IRQ handler register error

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When registering the IRQ handler fails, do not just return the error code,
this will free the devm_kzalloc()-ed data struct while leaving the queued
work queued and the registered power_supply registered with both of them
now pointing to free-ed memory, resulting in various kernel crashes
soon afterwards.

Instead properly tear-down things on IRQ handler register errors.

Fixes: 703df6c09795 ("power: bq27xxx_battery: Reorganize I2C into a module")
Cc: Andrew F. Davis <afd@xxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
Changes in v2:
- Fix devm_kzalloc()-ed type in the commit message
---
 drivers/power/supply/bq27xxx_battery_i2c.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/bq27xxx_battery_i2c.c b/drivers/power/supply/bq27xxx_battery_i2c.c
index 46f078350fd3..cf38cbfe13e9 100644
--- a/drivers/power/supply/bq27xxx_battery_i2c.c
+++ b/drivers/power/supply/bq27xxx_battery_i2c.c
@@ -187,7 +187,8 @@ static int bq27xxx_battery_i2c_probe(struct i2c_client *client,
 			dev_err(&client->dev,
 				"Unable to register IRQ %d error %d\n",
 				client->irq, ret);
-			return ret;
+			bq27xxx_battery_teardown(di);
+			goto err_failed;
 		}
 	}
 
-- 
2.31.1




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