1 files changed, 12 insertions, 7 deletions

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 4a08b624910a..5d7a68674d9b 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2012-2019, Intel Corporation. All rights reserved.
+ * Copyright (c) 2012-2023, Intel Corporation. All rights reserved.
  * Intel Management Engine Interface (Intel MEI) Linux driver
  */
 
@@ -702,13 +702,15 @@ void *mei_cldev_dma_map(struct mei_cl_device *cldev, u8 buffer_id, size_t size)
 	if (cl->state == MEI_FILE_UNINITIALIZED) {
 		ret = mei_cl_link(cl);
 		if (ret)
-			goto out;
+			goto notlinked;
 		/* update pointers */
 		cl->cldev = cldev;
 	}
 
 	ret = mei_cl_dma_alloc_and_map(cl, NULL, buffer_id, size);
-out:
+	if (ret)
+		mei_cl_unlink(cl);
+notlinked:
 	mutex_unlock(&bus->device_lock);
 	if (ret)
 		return ERR_PTR(ret);
@@ -758,7 +760,7 @@ int mei_cldev_enable(struct mei_cl_device *cldev)
 	if (cl->state == MEI_FILE_UNINITIALIZED) {
 		ret = mei_cl_link(cl);
 		if (ret)
-			goto out;
+			goto notlinked;
 		/* update pointers */
 		cl->cldev = cldev;
 	}
@@ -785,6 +787,9 @@ int mei_cldev_enable(struct mei_cl_device *cldev)
 	}
 
 out:
+	if (ret)
+		mei_cl_unlink(cl);
+notlinked:
 	mutex_unlock(&bus->device_lock);
 
 	return ret;
@@ -1222,9 +1227,9 @@ ATTRIBUTE_GROUPS(mei_cldev);
  *
  * Return: 0 on success -ENOMEM on when add_uevent_var fails
  */
-static int mei_cl_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int mei_cl_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct mei_cl_device *cldev = to_mei_cl_device(dev);
+	const struct mei_cl_device *cldev = to_mei_cl_device(dev);
 	const uuid_le *uuid = mei_me_cl_uuid(cldev->me_cl);
 	u8 version = mei_me_cl_ver(cldev->me_cl);
 
@@ -1277,7 +1282,6 @@ static void mei_cl_bus_dev_release(struct device *dev)
 	mei_cl_flush_queues(cldev->cl, NULL);
 	mei_me_cl_put(cldev->me_cl);
 	mei_dev_bus_put(cldev->bus);
-	mei_cl_unlink(cldev->cl);
 	kfree(cldev->cl);
 	kfree(cldev);
 }
@@ -1388,6 +1392,7 @@ static int mei_cl_bus_dev_add(struct mei_cl_device *cldev)
  */
 static void mei_cl_bus_dev_stop(struct mei_cl_device *cldev)
 {
+	cldev->do_match = 0;
 	if (cldev->is_added)
 		device_release_driver(&cldev->dev);
 }