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Commit 87c6c229 authored by Jean Delvare's avatar Jean Delvare Committed by Jean Delvare
Browse files

i2c: Drop redundant i2c_adapter.list 



i2c_adapter.list is superfluous, this list duplicates the one
maintained by the driver core. Drop it.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Acked-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
parent e48d3319

Documentation/feature-removal-schedule.txt

+0 −9
Original line number Diff line number Diff line
@@ -191,15 +191,6 @@ Who: Kay Sievers <kay.sievers@suse.de> 


---------------------------



What:	i2c_adapter.list

When:	July 2007

Why:	Superfluous, this list duplicates the one maintained by the driver

	core.

Who:	Jean Delvare <khali@linux-fr.org>,

	David Brownell <dbrownell@users.sourceforge.net>



---------------------------



What:	ACPI procfs interface

When:	July 2008

Why:	ACPI sysfs conversion should be finished by January 2008.

drivers/i2c/i2c-core.c

+10 −14
Original line number Diff line number Diff line
@@ -34,11 +34,11 @@ 
#include <linux/mutex.h>

#include <linux/completion.h>

#include <asm/uaccess.h>

#include <asm/semaphore.h>



#include "i2c-core.h"





static LIST_HEAD(adapters);

static LIST_HEAD(drivers);

static DEFINE_MUTEX(core_lists);

static DEFINE_IDR(i2c_adapter_idr);
@@ -331,7 +331,6 @@ static int i2c_register_adapter(struct i2c_adapter *adap) 
	INIT_LIST_HEAD(&adap->clients);



	mutex_lock(&core_lists);

	list_add_tail(&adap->list, &adapters);



	/* Add the adapter to the driver core.

	 * If the parent pointer is not set up,
@@ -368,7 +367,6 @@ static int i2c_register_adapter(struct i2c_adapter *adap) 
	return res;



out_list:

	list_del(&adap->list);

	idr_remove(&i2c_adapter_idr, adap->nr);

	goto out_unlock;

}
@@ -473,7 +471,6 @@ EXPORT_SYMBOL_GPL(i2c_add_numbered_adapter); 
int i2c_del_adapter(struct i2c_adapter *adap)

{

	struct list_head  *item, *_n;

	struct i2c_adapter *adap_from_list;

	struct i2c_driver *driver;

	struct i2c_client *client;

	int res = 0;
@@ -481,11 +478,7 @@ int i2c_del_adapter(struct i2c_adapter *adap) 
	mutex_lock(&core_lists);



	/* First make sure that this adapter was ever added */

	list_for_each_entry(adap_from_list, &adapters, list) {

		if (adap_from_list == adap)

			break;

	}

	if (adap_from_list != adap) {

	if (idr_find(&i2c_adapter_idr, adap->nr) != adap) {

		pr_debug("i2c-core: attempting to delete unregistered "

			 "adapter [%s]\n", adap->name);

		res = -EINVAL;
@@ -529,7 +522,6 @@ int i2c_del_adapter(struct i2c_adapter *adap) 
	/* clean up the sysfs representation */

	init_completion(&adap->dev_released);

	device_unregister(&adap->dev);

	list_del(&adap->list);



	/* wait for sysfs to drop all references */

	wait_for_completion(&adap->dev_released);
@@ -592,9 +584,12 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver) 
	if (driver->attach_adapter) {

		struct i2c_adapter *adapter;



		list_for_each_entry(adapter, &adapters, list) {

		down(&i2c_adapter_class.sem);

		list_for_each_entry(adapter, &i2c_adapter_class.devices,

				    dev.node) {

			driver->attach_adapter(adapter);

		}

		up(&i2c_adapter_class.sem);

	}



	mutex_unlock(&core_lists);
@@ -609,7 +604,7 @@ EXPORT_SYMBOL(i2c_register_driver); 
 */

void i2c_del_driver(struct i2c_driver *driver)

{

	struct list_head   *item1, *item2, *_n;

	struct list_head   *item2, *_n;

	struct i2c_client  *client;

	struct i2c_adapter *adap;
@@ -623,8 +618,8 @@ void i2c_del_driver(struct i2c_driver *driver) 
	 * attached. If so, detach them to be able to kill the driver

	 * afterwards.

	 */

	list_for_each(item1,&adapters) {

		adap = list_entry(item1, struct i2c_adapter, list);

	down(&i2c_adapter_class.sem);

	list_for_each_entry(adap, &i2c_adapter_class.devices, dev.node) {

		if (driver->detach_adapter) {

			if (driver->detach_adapter(adap)) {

				dev_err(&adap->dev, "detach_adapter failed "
@@ -648,6 +643,7 @@ void i2c_del_driver(struct i2c_driver *driver) 
			}

		}

	}

	up(&i2c_adapter_class.sem);



 unregister:

	driver_unregister(&driver->driver);

include/linux/i2c.h

+0 −1
Original line number Diff line number Diff line
@@ -317,7 +317,6 @@ struct i2c_adapter { 


	int nr;

	struct list_head clients;

	struct list_head list;

	char name[48];

	struct completion dev_released;

};