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i2c: Make the return type of i2c_del_mux_adapter() void

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i2c_del_mux_adapter always returns 0 and none of it current users check its
return value anyway. It is also an essential requirement of the Linux device
driver model, that functions which may be called from a device's remove callback
to free resources provided by the device, are not allowed to fail. This is the
case for i2c_del_mux_adapter(), so make its return type void to make the
fact that it won't fail explicit.

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 08:16:49 +00:00 committed by Wolfram Sang
parent a205e63d12
commit 51d95709dd
2 changed files with 2 additions and 4 deletions
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4
drivers/i2c/i2c-mux.c
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@ -191,14 +191,12 @@ struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
}
EXPORT_SYMBOL_GPL(i2c_add_mux_adapter);
int i2c_del_mux_adapter(struct i2c_adapter *adap)
void i2c_del_mux_adapter(struct i2c_adapter *adap)
{
struct i2c_mux_priv *priv = adap->algo_data;
i2c_del_adapter(adap);
kfree(priv);
return 0;
}
EXPORT_SYMBOL_GPL(i2c_del_mux_adapter);

2
include/linux/i2c-mux.h
View file

@ -42,7 +42,7 @@ struct i2c_adapter *i2c_add_mux_adapter(struct i2c_adapter *parent,
int (*deselect) (struct i2c_adapter *,
void *mux_dev, u32 chan_id));
int i2c_del_mux_adapter(struct i2c_adapter *adap);
void i2c_del_mux_adapter(struct i2c_adapter *adap);
#endif /* __KERNEL__ */