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 --- drivers/i2c/i2c-dev.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'drivers/i2c/i2c-dev.c') diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 5f3a52d517c..cec0f3ba97f 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -192,13 +192,12 @@ static int i2cdev_check(struct device *dev, void *addrp) /* walk up mux tree */ static int i2cdev_check_mux_parents(struct i2c_adapter *adapter, int addr) { + struct i2c_adapter *parent = i2c_parent_is_i2c_adapter(adapter); int result; result = device_for_each_child(&adapter->dev, &addr, i2cdev_check); - - if (!result && i2c_parent_is_i2c_adapter(adapter)) - result = i2cdev_check_mux_parents( - to_i2c_adapter(adapter->dev.parent), addr); + if (!result && parent) + result = i2cdev_check_mux_parents(parent, addr); return result; } @@ -222,11 +221,11 @@ static int i2cdev_check_mux_children(struct device *dev, void *addrp) driver bound to it, as NOT busy. */ static int i2cdev_check_addr(struct i2c_adapter *adapter, unsigned int addr) { + struct i2c_adapter *parent = i2c_parent_is_i2c_adapter(adapter); int result = 0; - if (i2c_parent_is_i2c_adapter(adapter)) - result = i2cdev_check_mux_parents( - to_i2c_adapter(adapter->dev.parent), addr); + if (parent) + result = i2cdev_check_mux_parents(parent, addr); if (!result) result = device_for_each_child(&adapter->dev, &addr, -- cgit v1.2.3