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i2c: i2c_del_adapter: Don't treat removing a non-registered adapter as error

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Currently i2c_del_adapter() returns -EINVAL when it gets an adapter which is not
registered. But none of the users of i2c_del_adapter() depend on this behavior,
so for the sake of being able to sanitize the return type of i2c_del_adapter
argue, that the purpose of i2c_del_adapter() is to remove an I2C adapter from
the system. If the adapter is not registered in the first place this becomes a
no-op. So we can return success without having to do anything.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Lars-Peter Clausen 2013-03-09 08:16:45 +00:00 committed by Wolfram Sang
parent 19baba4cb6
commit f5fb082295
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/i2c-core.c
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@ -1231,7 +1231,7 @@ int i2c_del_adapter(struct i2c_adapter *adap)
if (found != adap) {
pr_debug("i2c-core: attempting to delete unregistered "
"adapter [%s]\n", adap->name);
return -EINVAL;
return 0;
}
/* Tell drivers about this removal */