diff options
| -rw-r--r-- | drivers/i2c/i2c-core.c | 20 | ||||
| -rw-r--r-- | include/linux/i2c.h | 2 |
2 files changed, 16 insertions, 6 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index f7620cada782..b9fa1d0320b4 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1091,6 +1091,18 @@ EXPORT_SYMBOL(i2c_del_adapter); /* ------------------------------------------------------------------------- */ +int i2c_for_each_dev(void *data, int (*fn)(struct device *, void *)) +{ + int res; + + mutex_lock(&core_lock); + res = bus_for_each_dev(&i2c_bus_type, NULL, data, fn); + mutex_unlock(&core_lock); + + return res; +} +EXPORT_SYMBOL_GPL(i2c_for_each_dev); + static int __process_new_driver(struct device *dev, void *data) { if (dev->type != &i2c_adapter_type) @@ -1134,9 +1146,7 @@ int i2c_register_driver(struct module *owner, struct i2c_driver *driver) INIT_LIST_HEAD(&driver->clients); /* Walk the adapters that are already present */ - mutex_lock(&core_lock); - bus_for_each_dev(&i2c_bus_type, NULL, driver, __process_new_driver); - mutex_unlock(&core_lock); + i2c_for_each_dev(driver, __process_new_driver); return 0; } @@ -1156,9 +1166,7 @@ static int __process_removed_driver(struct device *dev, void *data) */ void i2c_del_driver(struct i2c_driver *driver) { - mutex_lock(&core_lock); - bus_for_each_dev(&i2c_bus_type, NULL, driver, __process_removed_driver); - mutex_unlock(&core_lock); + i2c_for_each_dev(driver, __process_removed_driver); driver_unregister(&driver->driver); pr_debug("i2c-core: driver [%s] unregistered\n", driver->driver.name); diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 3963a5567472..4df12c7e69d7 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -395,6 +395,8 @@ i2c_parent_is_i2c_adapter(const struct i2c_adapter *adapter) return NULL; } +int i2c_for_each_dev(void *data, int (*fn)(struct device *, void *)); + /* Adapter locking functions, exported for shared pin cases */ void i2c_lock_adapter(struct i2c_adapter *); void i2c_unlock_adapter(struct i2c_adapter *); |