diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 59e6f37180f6c9683abfdc80c0b71e1900d0c4ef..fd440995b8bd021e2f9805e13bf6606ccdf9af1c 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1525,6 +1525,32 @@ void i2c_del_adapter(struct i2c_adapter *adap) } EXPORT_SYMBOL(i2c_del_adapter); +static void devm_i2c_del_adapter(void *adapter) +{ + i2c_del_adapter(adapter); +} + +/** + * devm_i2c_add_adapter - device-managed variant of i2c_add_adapter() + * @dev: managing device for adding this I2C adapter + * @adapter: the adapter to add + * Context: can sleep + * + * Add adapter with dynamic bus number, same with i2c_add_adapter() + * but the adapter will be auto deleted on driver detach. + */ +int devm_i2c_add_adapter(struct device *dev, struct i2c_adapter *adapter) +{ + int ret; + + ret = i2c_add_adapter(adapter); + if (ret) + return ret; + + return devm_add_action_or_reset(dev, devm_i2c_del_adapter, adapter); +} +EXPORT_SYMBOL_GPL(devm_i2c_add_adapter); + /** * i2c_parse_fw_timings - get I2C related timing parameters from firmware * @dev: The device to scan for I2C timing properties diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 7e748648c7d3d6a841f9cdbadf23157faee6367a..99bffccb87bc3f19a16e91d2d8ecf76e023a9d5c 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -794,6 +794,8 @@ i2c_unlock_bus(struct i2c_adapter *adapter, unsigned int flags) */ #if IS_ENABLED(CONFIG_I2C) extern int i2c_add_adapter(struct i2c_adapter *); +extern int devm_i2c_add_adapter(struct device *dev, + struct i2c_adapter *adapter); extern void i2c_del_adapter(struct i2c_adapter *); extern int i2c_add_numbered_adapter(struct i2c_adapter *);