[char-misc-next 1/2] mei: bus: add mei_cldev_uuid

[Alexander Usyskin]

Add mei_cldev_uuid API on mei bus to allow client
to query what UUID it bound to.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Badal Nilawar <badal.nilawar@xxxxxxxxx>
Signed-off-by: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
---
 drivers/misc/mei/bus.c     | 13 +++++++++++++
 include/linux/mei_cl_bus.h |  1 +
 2 files changed, 14 insertions(+)

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index f739dbcdb04c..fcde082eb5e3 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -601,6 +601,19 @@ void mei_cldev_set_drvdata(struct mei_cl_device *cldev, void *data)
 }
 EXPORT_SYMBOL_GPL(mei_cldev_set_drvdata);
 
+/**
+ * mei_cldev_uuid - return uuid of the underlying me client
+ *
+ * @cldev: mei client device
+ *
+ * Return: me client uuid
+ */
+const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev)
+{
+	return mei_me_cl_uuid(cldev->me_cl);
+}
+EXPORT_SYMBOL_GPL(mei_cldev_uuid);
+
 /**
  * mei_cldev_ver - return protocol version of the underlying me client
  *
diff --git a/include/linux/mei_cl_bus.h b/include/linux/mei_cl_bus.h
index a82755e1fc40..5bdbd9e1d460 100644
--- a/include/linux/mei_cl_bus.h
+++ b/include/linux/mei_cl_bus.h
@@ -112,6 +112,7 @@ int mei_cldev_register_rx_cb(struct mei_cl_device *cldev, mei_cldev_cb_t rx_cb);
 int mei_cldev_register_notif_cb(struct mei_cl_device *cldev,
 				mei_cldev_cb_t notif_cb);
 
+const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev);
 u8 mei_cldev_ver(const struct mei_cl_device *cldev);
 size_t mei_cldev_mtu(const struct mei_cl_device *cldev);
 
-- 
2.43.0