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>
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4 changed files with 7 additions and 15 deletions
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@ -586,10 +586,7 @@ the driver module is usually enough.
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void foo_cleanup(void)
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void foo_cleanup(void)
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{
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{
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if (foo_initialized == 1) {
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if (foo_initialized == 1) {
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if ((res = i2c_del_driver(&foo_driver))) {
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i2c_del_driver(&foo_driver);
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printk("foo: Driver registration failed, module not removed.\n");
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return;
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}
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foo_initialized --;
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foo_initialized --;
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}
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}
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}
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}
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@ -599,14 +599,12 @@ EXPORT_SYMBOL(i2c_register_driver);
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* i2c_del_driver - unregister I2C driver
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* i2c_del_driver - unregister I2C driver
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* @driver: the driver being unregistered
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* @driver: the driver being unregistered
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*/
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*/
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int i2c_del_driver(struct i2c_driver *driver)
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void i2c_del_driver(struct i2c_driver *driver)
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{
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{
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struct list_head *item1, *item2, *_n;
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struct list_head *item1, *item2, *_n;
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struct i2c_client *client;
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struct i2c_client *client;
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struct i2c_adapter *adap;
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struct i2c_adapter *adap;
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int res = 0;
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mutex_lock(&core_lists);
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mutex_lock(&core_lists);
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/* new-style driver? */
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/* new-style driver? */
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@ -620,11 +618,10 @@ int i2c_del_driver(struct i2c_driver *driver)
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list_for_each(item1,&adapters) {
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list_for_each(item1,&adapters) {
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adap = list_entry(item1, struct i2c_adapter, list);
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adap = list_entry(item1, struct i2c_adapter, list);
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if (driver->detach_adapter) {
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if (driver->detach_adapter) {
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if ((res = driver->detach_adapter(adap))) {
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if (driver->detach_adapter(adap)) {
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dev_err(&adap->dev, "detach_adapter failed "
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dev_err(&adap->dev, "detach_adapter failed "
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"for driver [%s]\n",
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"for driver [%s]\n",
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driver->driver.name);
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driver->driver.name);
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goto out_unlock;
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}
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}
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} else {
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} else {
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list_for_each_safe(item2, _n, &adap->clients) {
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list_for_each_safe(item2, _n, &adap->clients) {
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@ -634,12 +631,11 @@ int i2c_del_driver(struct i2c_driver *driver)
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dev_dbg(&adap->dev, "detaching client [%s] "
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dev_dbg(&adap->dev, "detaching client [%s] "
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"at 0x%02x\n", client->name,
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"at 0x%02x\n", client->name,
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client->addr);
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client->addr);
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if ((res = driver->detach_client(client))) {
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if (driver->detach_client(client)) {
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dev_err(&adap->dev, "detach_client "
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dev_err(&adap->dev, "detach_client "
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"failed for client [%s] at "
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"failed for client [%s] at "
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"0x%02x\n", client->name,
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"0x%02x\n", client->name,
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client->addr);
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client->addr);
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goto out_unlock;
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}
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}
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}
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}
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}
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}
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@ -650,9 +646,7 @@ int i2c_del_driver(struct i2c_driver *driver)
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list_del(&driver->list);
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list_del(&driver->list);
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pr_debug("i2c-core: driver [%s] unregistered\n", driver->driver.name);
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pr_debug("i2c-core: driver [%s] unregistered\n", driver->driver.name);
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out_unlock:
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mutex_unlock(&core_lists);
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mutex_unlock(&core_lists);
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return 0;
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}
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}
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EXPORT_SYMBOL(i2c_del_driver);
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EXPORT_SYMBOL(i2c_del_driver);
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@ -459,7 +459,8 @@ therm_of_probe( struct of_device *dev, const struct of_device_id *match )
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static int
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static int
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therm_of_remove( struct of_device *dev )
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therm_of_remove( struct of_device *dev )
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{
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{
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return i2c_del_driver( &g4fan_driver );
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i2c_del_driver( &g4fan_driver );
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return 0;
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}
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}
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static struct of_device_id therm_of_match[] = {{
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static struct of_device_id therm_of_match[] = {{
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@ -371,7 +371,7 @@ extern int i2c_del_adapter(struct i2c_adapter *);
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extern int i2c_add_numbered_adapter(struct i2c_adapter *);
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extern int i2c_add_numbered_adapter(struct i2c_adapter *);
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extern int i2c_register_driver(struct module *, struct i2c_driver *);
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extern int i2c_register_driver(struct module *, struct i2c_driver *);
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extern int i2c_del_driver(struct i2c_driver *);
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extern void i2c_del_driver(struct i2c_driver *);
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static inline int i2c_add_driver(struct i2c_driver *driver)
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static inline int i2c_add_driver(struct i2c_driver *driver)
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{
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{
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