i2c: export i2c_client_type structure

i2c bus has 2 different types of device belonging to the same bus and bus notifiers use device type to distinguish between adapters and clients. Previously we only had i2c_adapter_type exported, which made code wanting to work with i2c_client devices test for type not equal to adapter type. This unfortunately is not safe if we ever add another type to the bus, so let's export i2c_client_type as well. Reviewed-by: Jean Delvare <[email protected]> Acked-by: Benjamin Tissoires <[email protected]> Reviewed-by: Wolfram Sang <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]>
opendata26 · Apr 1, 2017 · 00a06c2 · 00a06c2
1 parent 97da385
commit 00a06c2
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
@@ -74,7 +74,6 @@
 static DEFINE_MUTEX(core_lock);
 static DEFINE_IDR(i2c_adapter_idr);
 
-static struct device_type i2c_client_type;
 static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver);
 
 static struct static_key i2c_trace_msg = STATIC_KEY_INIT_FALSE;
@@ -1097,11 +1096,12 @@ struct bus_type i2c_bus_type = {
 };
 EXPORT_SYMBOL_GPL(i2c_bus_type);
 
-static struct device_type i2c_client_type = {
+struct device_type i2c_client_type = {
 	.groups		= i2c_dev_groups,
 	.uevent		= i2c_device_uevent,
 	.release	= i2c_client_dev_release,
 };
+EXPORT_SYMBOL_GPL(i2c_client_type);
 
 
 /**

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
@@ -38,6 +38,7 @@
 
 extern struct bus_type i2c_bus_type;
 extern struct device_type i2c_adapter_type;
+extern struct device_type i2c_client_type;
 
 /* --- General options ------------------------------------------------	*/