From 97cc4d49cfcda1c2dad89c00b62a25b628ce2115 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 24 Oct 2010 18:16:57 +0200 Subject: i2c: Let i2c_parent_is_i2c_adapter return the parent adapter This makes the calling site's code clearer IMHO. Signed-off-by: Jean Delvare Acked-by: Michael Lawnick --- include/linux/i2c.h | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'include/linux/i2c.h') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 9391a491501..1f66fa06a97 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -384,10 +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->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 */ -- cgit v1.2.3