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i2c: Kill the redundant client list

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We used to maintain our own per-adapter list of i2c clients, but this
is redundant with what the driver core does, and no longer needed.
Just drop the redundant list.

Signed-off-by: Jean Delvare <[email protected]>
Cc: David Brownell <[email protected]>
This commit is contained in:
Jean Delvare 2009-06-19 16:58:19 +02:00
commit e549c2b54d
2 changed files with 11 additions and 21 deletions
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28
drivers/i2c/i2c-core.c
View file

@ -276,10 +276,6 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info)
if (status)
goto out_err;
mutex_lock(&adap->clist_lock);
list_add_tail(&client->list, &adap->clients);
mutex_unlock(&adap->clist_lock);
dev_dbg(&adap->dev, "client [%s] registered with bus id %s\n",
client->name, dev_name(&client->dev));
@ -301,12 +297,6 @@ EXPORT_SYMBOL_GPL(i2c_new_device);
*/
void i2c_unregister_device(struct i2c_client *client)
{
struct i2c_adapter *adapter = client->adapter;
mutex_lock(&adapter->clist_lock);
list_del(&client->list);
mutex_unlock(&adapter->clist_lock);
device_unregister(&client->dev);
}
EXPORT_SYMBOL_GPL(i2c_unregister_device);
@ -432,8 +422,6 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
return -EAGAIN;
mutex_init(&adap->bus_lock);
mutex_init(&adap->clist_lock);
INIT_LIST_HEAD(&adap->clients);
mutex_lock(&core_lock);
@ -583,6 +571,14 @@ static int i2c_do_del_adapter(struct device_driver *d, void *data)
return res;
}
static int __unregister_client(struct device *dev, void *dummy)
{
struct i2c_client *client = i2c_verify_client(dev);
if (client)
i2c_unregister_device(client);
return 0;
}
/**
* i2c_del_adapter - unregister I2C adapter
* @adap: the adapter being unregistered
@ -593,7 +589,6 @@ static int i2c_do_del_adapter(struct device_driver *d, void *data)
*/
int i2c_del_adapter(struct i2c_adapter *adap)
{
struct i2c_client *client, *_n;
int res = 0;
mutex_lock(&core_lock);
@ -612,10 +607,9 @@ int i2c_del_adapter(struct i2c_adapter *adap)
if (res)
goto out_unlock;
/* Detach any active clients */
list_for_each_entry_safe_reverse(client, _n, &adap->clients, list) {
i2c_unregister_device(client);
}
/* Detach any active clients. This can't fail, thus we do not
checking the returned value. */
res = device_for_each_child(&adap->dev, NULL, __unregister_client);
/* clean up the sysfs representation */
init_completion(&adap->dev_released);