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| author | Jean Delvare <khali@linux-fr.org> | 2010-10-24 18:16:57 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2010-10-24 18:16:57 +0200 |
| commit | 97cc4d49cfcda1c2dad89c00b62a25b628ce2115 (patch) | |
| tree | 1c9120a9e5db76df3f82338c64a2a19d88aedcbc /drivers/i2c/i2c-dev.c | |
| parent | i2c: Simplify i2c_parent_is_i2c_adapter (diff) | |
| download | linux-97cc4d49cfcda1c2dad89c00b62a25b628ce2115.tar.xz linux-97cc4d49cfcda1c2dad89c00b62a25b628ce2115.zip | |
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 <khali@linux-fr.org>
Acked-by: Michael Lawnick <ml.lawnick@gmx.de>
Diffstat (limited to 'drivers/i2c/i2c-dev.c')
| -rw-r--r-- | drivers/i2c/i2c-dev.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 5f3a52d517c3..cec0f3ba97f8 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, |