[PATCH v2] i2c: don't expose function which is only used internally

[Wolfram Sang <wsa+renesas@sang-engineering.com>]

i2c_setup_smbus_alert() is only needed within the I2C core, so no need
to expose it to other modules.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---

Based on i2c/for-mergewindow. Build bots are happy.

Change since v1:

not only remove the symbol, also move the declaration from a public
header to the private one.

 drivers/i2c/i2c-core-smbus.c | 1 -
 drivers/i2c/i2c-core.h       | 9 +++++++++
 include/linux/i2c-smbus.h    | 8 --------
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/i2c/i2c-core-smbus.c b/drivers/i2c/i2c-core-smbus.c
index 304c2c8fee68..053b215308c4 100644
--- a/drivers/i2c/i2c-core-smbus.c
+++ b/drivers/i2c/i2c-core-smbus.c
@@ -716,5 +716,4 @@ int i2c_setup_smbus_alert(struct i2c_adapter *adapter)
 
 	return PTR_ERR_OR_ZERO(i2c_new_smbus_alert_device(adapter, NULL));
 }
-EXPORT_SYMBOL_GPL(i2c_setup_smbus_alert);
 #endif
diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h
index 8ce261167a2d..87e2c914f1c5 100644
--- a/drivers/i2c/i2c-core.h
+++ b/drivers/i2c/i2c-core.h
@@ -86,3 +86,12 @@ void of_i2c_register_devices(struct i2c_adapter *adap);
 static inline void of_i2c_register_devices(struct i2c_adapter *adap) { }
 #endif
 extern struct notifier_block i2c_of_notifier;
+
+#if IS_ENABLED(CONFIG_I2C_SMBUS)
+int i2c_setup_smbus_alert(struct i2c_adapter *adap);
+#else
+static inline int i2c_setup_smbus_alert(struct i2c_adapter *adap)
+{
+	return 0;
+}
+#endif
diff --git a/include/linux/i2c-smbus.h b/include/linux/i2c-smbus.h
index 95cf902e0bda..ced1c6ead52a 100644
--- a/include/linux/i2c-smbus.h
+++ b/include/linux/i2c-smbus.h
@@ -30,14 +30,6 @@ struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter,
 					      struct i2c_smbus_alert_setup *setup);
 int i2c_handle_smbus_alert(struct i2c_client *ara);
 
-#if IS_ENABLED(CONFIG_I2C_SMBUS)
-int i2c_setup_smbus_alert(struct i2c_adapter *adap);
-#else
-static inline int i2c_setup_smbus_alert(struct i2c_adapter *adap)
-{
-	return 0;
-}
-#endif
 #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_I2C_SLAVE)
 struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter);
 void i2c_free_slave_host_notify_device(struct i2c_client *client);
-- 
2.30.2