diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/i2c.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 4bae0b72ed3c..1f66fa06a97c 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -384,11 +384,15 @@ static inline void i2c_set_adapdata(struct i2c_adapter *dev, void *data) dev_set_drvdata(&dev->dev, data); } -static inline int i2c_parent_is_i2c_adapter(const struct i2c_adapter *adapter) +static inline struct i2c_adapter * +i2c_parent_is_i2c_adapter(const struct i2c_adapter *adapter) { - return adapter->dev.parent != NULL - && adapter->dev.parent->bus == &i2c_bus_type - && adapter->dev.parent->type == &i2c_adapter_type; + struct device *parent = adapter->dev.parent; + + if (parent != NULL && parent->type == &i2c_adapter_type) + return to_i2c_adapter(parent); + else + return NULL; } /* Adapter locking functions, exported for shared pin cases */ |