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i2c: Make i2c_del_driver a void function 

Make i2c_del_driver a void function, like all other driver removal
functions. It always returned 0 even when errors occured, and nobody
ever actually checked the return value anyway. And we cannot fail
a module removal anyway.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Jean Delvare 2007-05-01 23:26:32 +02:00 committed by Jean Delvare
parent a97f1ed090
commit b3e820968a
4 changed files with 7 additions and 15 deletions
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5
Documentation/i2c/writing-clients
View File

@ -586,10 +586,7 @@ the driver module is usually enough.
void foo_cleanup(void)
{
if (foo_initialized == 1) {
if ((res = i2c_del_driver(&foo_driver))) {
printk("foo: Driver registration failed, module not removed.\n");
return;
}
i2c_del_driver(&foo_driver);
foo_initialized --;
}
}

12
drivers/i2c/i2c-core.c
View File

@ -599,14 +599,12 @@ EXPORT_SYMBOL(i2c_register_driver);
* i2c_del_driver - unregister I2C driver
* @driver: the driver being unregistered
*/
int i2c_del_driver(struct i2c_driver *driver)
void i2c_del_driver(struct i2c_driver *driver)
{
struct list_head *item1, *item2, *_n;
struct i2c_client *client;
struct i2c_adapter *adap;
int res = 0;
mutex_lock(&core_lists);
/* new-style driver? */
@ -620,11 +618,10 @@ int i2c_del_driver(struct i2c_driver *driver)
list_for_each(item1,&adapters) {
adap = list_entry(item1, struct i2c_adapter, list);
if (driver->detach_adapter) {
if ((res = driver->detach_adapter(adap))) {
if (driver->detach_adapter(adap)) {
dev_err(&adap->dev, "detach_adapter failed "
"for driver [%s]\n",
driver->driver.name);
goto out_unlock;
}
} else {
list_for_each_safe(item2, _n, &adap->clients) {
@ -634,12 +631,11 @@ int i2c_del_driver(struct i2c_driver *driver)
dev_dbg(&adap->dev, "detaching client [%s] "
"at 0x%02x\n", client->name,
client->addr);
if ((res = driver->detach_client(client))) {
if (driver->detach_client(client)) {
dev_err(&adap->dev, "detach_client "
"failed for client [%s] at "
"0x%02x\n", client->name,
client->addr);
goto out_unlock;
}
}
}
@ -650,9 +646,7 @@ int i2c_del_driver(struct i2c_driver *driver)
list_del(&driver->list);
pr_debug("i2c-core: driver [%s] unregistered\n", driver->driver.name);
out_unlock:
mutex_unlock(&core_lists);
return 0;
}
EXPORT_SYMBOL(i2c_del_driver);

3
drivers/macintosh/therm_windtunnel.c
View File

@ -459,7 +459,8 @@ therm_of_probe( struct of_device *dev, const struct of_device_id *match )
static int
therm_of_remove( struct of_device *dev )
{
return i2c_del_driver( &g4fan_driver );
i2c_del_driver( &g4fan_driver );
return 0;
}
static struct of_device_id therm_of_match[] = {{

2
include/linux/i2c.h
View File

@ -371,7 +371,7 @@ extern int i2c_del_adapter(struct i2c_adapter *);
extern int i2c_add_numbered_adapter(struct i2c_adapter *);
extern int i2c_register_driver(struct module *, struct i2c_driver *);
extern int i2c_del_driver(struct i2c_driver *);
extern void i2c_del_driver(struct i2c_driver *);
static inline int i2c_add_driver(struct i2c_driver *driver)
{