add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/iommu/iommu-sysfs.c
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@@ -1,17 +1,14 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * IOMMU sysfs class support
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  *
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  * Copyright (C) 2014 Red Hat, Inc.  All rights reserved.
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  *     Author: Alex Williamson <alex.williamson@redhat.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/device.h>
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 #include <linux/iommu.h>
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-#include <linux/module.h>
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+#include <linux/init.h>
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 #include <linux/slab.h>
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 /*
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@@ -22,25 +19,25 @@
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 	NULL,
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 };
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-static const struct attribute_group iommu_devices_attr_group = {
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+static const struct attribute_group devices_attr_group = {
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 	.name = "devices",
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 	.attrs = devices_attr,
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 };
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-static const struct attribute_group *iommu_dev_groups[] = {
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-	&iommu_devices_attr_group,
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+static const struct attribute_group *dev_groups[] = {
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+	&devices_attr_group,
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 	NULL,
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 };
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-static void iommu_release_device(struct device *dev)
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+static void release_device(struct device *dev)
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 {
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 	kfree(dev);
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 }
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 static struct class iommu_class = {
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 	.name = "iommu",
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-	.dev_release = iommu_release_device,
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-	.dev_groups = iommu_dev_groups,
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+	.dev_release = release_device,
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+	.dev_groups = dev_groups,
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 };
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 static int __init iommu_dev_init(void)