summaryrefslogtreecommitdiff
path: root/drivers/i2c/i2c-dev.c
diff options
context:
space:
mode:
authorJean Delvare <khali@linux-fr.org>2010-10-24 20:16:57 +0400
committerJean Delvare <khali@endymion.delvare>2010-10-24 20:16:57 +0400
commit97cc4d49cfcda1c2dad89c00b62a25b628ce2115 (patch)
tree1c9120a9e5db76df3f82338c64a2a19d88aedcbc /drivers/i2c/i2c-dev.c
parentd582963a027fd63f8dfc97a0bf3654d4380e34ce (diff)
downloadlinux-97cc4d49cfcda1c2dad89c00b62a25b628ce2115.tar.xz
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.c13
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,