add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/vfio/mdev/mdev_sysfs.c
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@@ -1,13 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * File attributes for Mediated devices
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  *
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  * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
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  *     Author: Neo Jia <cjia@nvidia.com>
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  *             Kirti Wankhede <kwankhede@nvidia.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/sysfs.h>
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@@ -55,7 +52,7 @@
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 			    const char *buf, size_t count)
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 {
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 	char *str;
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-	uuid_le uuid;
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+	guid_t uuid;
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 	int ret;
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 	if ((count < UUID_STRING_LEN) || (count > UUID_STRING_LEN + 1))
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@@ -65,19 +62,19 @@
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 	if (!str)
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 		return -ENOMEM;
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-	ret = uuid_le_to_bin(str, &uuid);
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+	ret = guid_parse(str, &uuid);
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 	kfree(str);
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 	if (ret)
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 		return ret;
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-	ret = mdev_device_create(kobj, dev, uuid);
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+	ret = mdev_device_create(kobj, dev, &uuid);
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 	if (ret)
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 		return ret;
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 	return count;
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 }
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-MDEV_TYPE_ATTR_WO(create);
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+static MDEV_TYPE_ATTR_WO(create);
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 static void mdev_type_release(struct kobject *kobj)
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 {
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@@ -92,8 +89,8 @@
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 	.release = mdev_type_release,
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 };
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-struct mdev_type *add_mdev_supported_type(struct mdev_parent *parent,
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-					  struct attribute_group *group)
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+static struct mdev_type *add_mdev_supported_type(struct mdev_parent *parent,
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+						 struct attribute_group *group)
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 {
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 	struct mdev_type *type;
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 	int ret;
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@@ -236,11 +233,9 @@
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 	if (val && device_remove_file_self(dev, attr)) {
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 		int ret;
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-		ret = mdev_device_remove(dev, false);
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-		if (ret) {
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-			device_create_file(dev, attr);
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+		ret = mdev_device_remove(dev);
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+		if (ret)
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 			return ret;
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-		}
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 	}
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 	return count;