diff options
author | Jean Delvare <khali@linux-fr.org> | 2009-06-19 14:58:19 (GMT) |
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committer | Jean Delvare <khali@linux-fr.org> | 2009-06-19 14:58:19 (GMT) |
commit | e549c2b54dd90a056d6824b885d438b7437874f0 (patch) | |
tree | 45da005101a1587c18b41f4ad572458e08b95099 /drivers/i2c/i2c-core.c | |
parent | 1e40ac12dab22d98d0178e87364cf4e36862809c (diff) | |
download | linux-fsl-qoriq-e549c2b54dd90a056d6824b885d438b7437874f0.tar.xz |
i2c: Kill the redundant client list
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 <khali@linux-fr.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Diffstat (limited to 'drivers/i2c/i2c-core.c')
-rw-r--r-- | drivers/i2c/i2c-core.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 95fb997..b1fd00d 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -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); |