Commit fde77779 authored by Heikki Krogerus's avatar Heikki Krogerus Committed by Rafael J. Wysocki
Browse files

device connection: Find connections also by checking the references 



We can also use this API to find named references that the
device nodes have by using fwnode_property_get_reference_args()
function.

Signed-off-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 83b34afb

drivers/base/devcon.c

+26 −0
Original line number Diff line number Diff line
@@ -38,6 +38,28 @@ fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id, 
	return NULL;

}



static void *

fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id,

		    void *data, devcon_match_fn_t match)

{

	struct device_connection con = { };

	void *ret;

	int i;



	for (i = 0; ; i++) {

		con.fwnode = fwnode_find_reference(fwnode, con_id, i);

		if (IS_ERR(con.fwnode))

			break;



		ret = match(&con, -1, data);

		fwnode_handle_put(con.fwnode);

		if (ret)

			return ret;

	}



	return NULL;

}



/**

 * device_connection_find_match - Find physical connection to a device

 * @dev: Device with the connection
@@ -65,6 +87,10 @@ void *device_connection_find_match(struct device *dev, const char *con_id, 
		ret = fwnode_graph_devcon_match(fwnode, con_id, data, match);

		if (ret)

			return ret;



		ret = fwnode_devcon_match(fwnode, con_id, data, match);

		if (ret)

			return ret;

	}



	mutex_lock(&devcon_lock);

drivers/usb/roles/class.c

+1 −1
Original line number Diff line number Diff line
@@ -101,7 +101,7 @@ static void *usb_role_switch_match(struct device_connection *con, int ep, 
	struct device *dev;



	if (con->fwnode) {

		if (!fwnode_property_present(con->fwnode, con->id))

		if (con->id && !fwnode_property_present(con->fwnode, con->id))

			return NULL;



		dev = class_find_device(role_class, NULL, con->fwnode,

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