From: Hans de Goede hdegoede@redhat.com
stable inclusion from stable-5.10.80 commit 9c9c33ea4cabd76348bdd006ca9b6bf55c217733 bugzilla: 185821 https://gitee.com/openeuler/kernel/issues/I4L7CG
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit cdf10ffe8f626d8a2edc354abf063df0078b2d71 ]
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@ti.com Signed-off-by: Hans de Goede hdegoede@redhat.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Reviewed-by: Weilong Chen chenweilong@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- 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 eb4f4284982f..3012eb13a08c 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; } }