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i2c: Remove detach_adapter 

The detach_adapter callback has been deprecated for quite some time and has no
user left. Keeping it alive blocks other cleanups, so remove it.

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 08:16:44 +00:00 committed by Wolfram Sang
parent 600abeadf3
commit 19baba4cb6
2 changed files with 12 additions and 28 deletions
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33
drivers/i2c/i2c-core.c
View File

@ -49,7 +49,7 @@
/* core_lock protects i2c_adapter_idr, and guarantees /* core_lock protects i2c_adapter_idr, and guarantees
that device detection, deletion of detected devices, and attach_adapter that device detection, deletion of detected devices, and attach_adapter
and detach_adapter calls are serialized */ calls are serialized */
static DEFINE_MUTEX(core_lock); static DEFINE_MUTEX(core_lock);
static DEFINE_IDR(i2c_adapter_idr); static DEFINE_IDR(i2c_adapter_idr);
@ -1172,11 +1172,10 @@ int i2c_add_numbered_adapter(struct i2c_adapter *adap)
} }
EXPORT_SYMBOL_GPL(i2c_add_numbered_adapter); EXPORT_SYMBOL_GPL(i2c_add_numbered_adapter);
static int i2c_do_del_adapter(struct i2c_driver *driver, static void i2c_do_del_adapter(struct i2c_driver *driver,
struct i2c_adapter *adapter) struct i2c_adapter *adapter)
{ {
struct i2c_client *client, *_n; struct i2c_client *client, *_n;
int res;
/* Remove the devices we created ourselves as the result of hardware /* Remove the devices we created ourselves as the result of hardware
* probing (using a driver's detect method) */ * probing (using a driver's detect method) */
@ -1188,16 +1187,6 @@ static int i2c_do_del_adapter(struct i2c_driver *driver,
i2c_unregister_device(client); i2c_unregister_device(client);
} }
} }
if (!driver->detach_adapter)
return 0;
dev_warn(&adapter->dev, "%s: detach_adapter method is deprecated\n",
driver->driver.name);
res = driver->detach_adapter(adapter);
if (res)
dev_err(&adapter->dev, "detach_adapter failed (%d) "
"for driver [%s]\n", res, driver->driver.name);
return res;
} }
static int __unregister_client(struct device *dev, void *dummy) static int __unregister_client(struct device *dev, void *dummy)
@ -1218,7 +1207,8 @@ static int __unregister_dummy(struct device *dev, void *dummy)
static int __process_removed_adapter(struct device_driver *d, void *data) static int __process_removed_adapter(struct device_driver *d, void *data)
{ {
return i2c_do_del_adapter(to_i2c_driver(d), data); i2c_do_del_adapter(to_i2c_driver(d), data);
return 0;
} }
/** /**
@ -1231,7 +1221,6 @@ static int __process_removed_adapter(struct device_driver *d, void *data)
*/ */
int i2c_del_adapter(struct i2c_adapter *adap) int i2c_del_adapter(struct i2c_adapter *adap)
{ {
int res = 0;
struct i2c_adapter *found; struct i2c_adapter *found;
struct i2c_client *client, *next; struct i2c_client *client, *next;
@ -1247,11 +1236,9 @@ int i2c_del_adapter(struct i2c_adapter *adap)
/* Tell drivers about this removal */ /* Tell drivers about this removal */
mutex_lock(&core_lock); mutex_lock(&core_lock);
res = bus_for_each_drv(&i2c_bus_type, NULL, adap, bus_for_each_drv(&i2c_bus_type, NULL, adap,
__process_removed_adapter); __process_removed_adapter);
mutex_unlock(&core_lock); mutex_unlock(&core_lock);
if (res)
return res;
/* Remove devices instantiated from sysfs */ /* Remove devices instantiated from sysfs */
mutex_lock_nested(&adap->userspace_clients_lock, mutex_lock_nested(&adap->userspace_clients_lock,
@ -1270,8 +1257,8 @@ int i2c_del_adapter(struct i2c_adapter *adap)
* we can't remove the dummy devices during the first pass: they * we can't remove the dummy devices during the first pass: they
* could have been instantiated by real devices wishing to clean * could have been instantiated by real devices wishing to clean
* them up properly, so we give them a chance to do that first. */ * them up properly, so we give them a chance to do that first. */
res = device_for_each_child(&adap->dev, NULL, __unregister_client); device_for_each_child(&adap->dev, NULL, __unregister_client);
res = device_for_each_child(&adap->dev, NULL, __unregister_dummy); device_for_each_child(&adap->dev, NULL, __unregister_dummy);
#ifdef CONFIG_I2C_COMPAT #ifdef CONFIG_I2C_COMPAT
class_compat_remove_link(i2c_adapter_compat_class, &adap->dev, class_compat_remove_link(i2c_adapter_compat_class, &adap->dev,
@ -1367,9 +1354,9 @@ EXPORT_SYMBOL(i2c_register_driver);
static int __process_removed_driver(struct device *dev, void *data) static int __process_removed_driver(struct device *dev, void *data)
{ {
if (dev->type != &i2c_adapter_type) if (dev->type == &i2c_adapter_type)
return 0; i2c_do_del_adapter(data, to_i2c_adapter(dev));
return i2c_do_del_adapter(data, to_i2c_adapter(dev)); return 0;
} }
/** /**

7
include/linux/i2c.h
View File

@ -125,7 +125,6 @@ extern s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client,
* struct i2c_driver - represent an I2C device driver * struct i2c_driver - represent an I2C device driver
* @class: What kind of i2c device we instantiate (for detect) * @class: What kind of i2c device we instantiate (for detect)
* @attach_adapter: Callback for bus addition (deprecated) * @attach_adapter: Callback for bus addition (deprecated)
* @detach_adapter: Callback for bus removal (deprecated)
* @probe: Callback for device binding * @probe: Callback for device binding
* @remove: Callback for device unbinding * @remove: Callback for device unbinding
* @shutdown: Callback for device shutdown * @shutdown: Callback for device shutdown
@ -162,12 +161,10 @@ extern s32 i2c_smbus_write_i2c_block_data(const struct i2c_client *client,
struct i2c_driver { struct i2c_driver {
unsigned int class; unsigned int class;
/* Notifies the driver that a new bus has appeared or is about to be /* Notifies the driver that a new bus has appeared. You should avoid
* removed. You should avoid using this, it will be removed in a * using this, it will be removed in a near future.
* near future.
*/ */
int (*attach_adapter)(struct i2c_adapter *) __deprecated; int (*attach_adapter)(struct i2c_adapter *) __deprecated;
int (*detach_adapter)(struct i2c_adapter *) __deprecated;
/* Standard driver model interfaces */ /* Standard driver model interfaces */
int (*probe)(struct i2c_client *, const struct i2c_device_id *); int (*probe)(struct i2c_client *, const struct i2c_device_id *);