mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
synced 2026-04-18 03:23:53 -04:00
bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
// 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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#include <linux/device.h>
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#include <linux/iommu.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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* We provide a common class "devices" group which initially has no attributes.
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* As devices are added to the IOMMU, we'll add links to the group.
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*/
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static struct attribute *devices_attr[] = {
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NULL,
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};
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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 *dev_groups[] = {
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&devices_attr_group,
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NULL,
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};
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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 const struct class iommu_class = {
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.name = "iommu",
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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)
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{
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return class_register(&iommu_class);
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}
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postcore_initcall(iommu_dev_init);
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/*
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* Init the struct device for the IOMMU. IOMMU specific attributes can
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* be provided as an attribute group, allowing a unique namespace per
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* IOMMU type.
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*/
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int iommu_device_sysfs_add(struct iommu_device *iommu,
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struct device *parent,
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const struct attribute_group **groups,
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const char *fmt, ...)
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{
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va_list vargs;
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int ret;
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iommu->dev = kzalloc_obj(*iommu->dev);
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if (!iommu->dev)
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return -ENOMEM;
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device_initialize(iommu->dev);
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iommu->dev->class = &iommu_class;
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iommu->dev->parent = parent;
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iommu->dev->groups = groups;
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va_start(vargs, fmt);
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ret = kobject_set_name_vargs(&iommu->dev->kobj, fmt, vargs);
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va_end(vargs);
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if (ret)
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goto error;
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ret = device_add(iommu->dev);
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if (ret)
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goto error;
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dev_set_drvdata(iommu->dev, iommu);
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return 0;
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error:
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put_device(iommu->dev);
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return ret;
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}
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EXPORT_SYMBOL_GPL(iommu_device_sysfs_add);
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void iommu_device_sysfs_remove(struct iommu_device *iommu)
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{
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dev_set_drvdata(iommu->dev, NULL);
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device_unregister(iommu->dev);
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iommu->dev = NULL;
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}
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EXPORT_SYMBOL_GPL(iommu_device_sysfs_remove);
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/*
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* IOMMU drivers can indicate a device is managed by a given IOMMU using
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* this interface. A link to the device will be created in the "devices"
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* directory of the IOMMU device in sysfs and an "iommu" link will be
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* created under the linked device, pointing back at the IOMMU device.
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*/
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int iommu_device_link(struct iommu_device *iommu, struct device *link)
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{
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int ret;
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ret = sysfs_add_link_to_group(&iommu->dev->kobj, "devices",
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&link->kobj, dev_name(link));
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if (ret)
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return ret;
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ret = sysfs_create_link_nowarn(&link->kobj, &iommu->dev->kobj, "iommu");
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if (ret)
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sysfs_remove_link_from_group(&iommu->dev->kobj, "devices",
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dev_name(link));
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return ret;
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}
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void iommu_device_unlink(struct iommu_device *iommu, struct device *link)
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{
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sysfs_remove_link(&link->kobj, "iommu");
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sysfs_remove_link_from_group(&iommu->dev->kobj, "devices", dev_name(link));
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}
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