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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>
133 lines
2.8 KiB
C
133 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright(c) 2024-2025 Intel Corporation. All rights reserved. */
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/tsm.h>
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/cleanup.h>
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#include <linux/pci-tsm.h>
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static struct class *tsm_class;
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static DEFINE_IDA(tsm_ida);
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static int match_id(struct device *dev, const void *data)
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{
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struct tsm_dev *tsm_dev = container_of(dev, struct tsm_dev, dev);
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int id = *(const int *)data;
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return tsm_dev->id == id;
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}
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struct tsm_dev *find_tsm_dev(int id)
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{
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struct device *dev = class_find_device(tsm_class, NULL, &id, match_id);
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if (!dev)
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return NULL;
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return container_of(dev, struct tsm_dev, dev);
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}
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static struct tsm_dev *alloc_tsm_dev(struct device *parent)
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{
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struct device *dev;
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int id;
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struct tsm_dev *tsm_dev __free(kfree) =
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kzalloc_obj(*tsm_dev);
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if (!tsm_dev)
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return ERR_PTR(-ENOMEM);
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id = ida_alloc(&tsm_ida, GFP_KERNEL);
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if (id < 0)
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return ERR_PTR(id);
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tsm_dev->id = id;
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dev = &tsm_dev->dev;
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dev->parent = parent;
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dev->class = tsm_class;
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device_initialize(dev);
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return no_free_ptr(tsm_dev);
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}
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static struct tsm_dev *tsm_register_pci_or_reset(struct tsm_dev *tsm_dev,
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struct pci_tsm_ops *pci_ops)
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{
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int rc;
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if (!pci_ops)
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return tsm_dev;
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tsm_dev->pci_ops = pci_ops;
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rc = pci_tsm_register(tsm_dev);
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if (rc) {
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dev_err(tsm_dev->dev.parent,
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"PCI/TSM registration failure: %d\n", rc);
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device_unregister(&tsm_dev->dev);
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return ERR_PTR(rc);
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}
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/* Notify TSM userspace that PCI/TSM operations are now possible */
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kobject_uevent(&tsm_dev->dev.kobj, KOBJ_CHANGE);
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return tsm_dev;
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}
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struct tsm_dev *tsm_register(struct device *parent, struct pci_tsm_ops *pci_ops)
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{
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struct tsm_dev *tsm_dev __free(put_tsm_dev) = alloc_tsm_dev(parent);
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struct device *dev;
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int rc;
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if (IS_ERR(tsm_dev))
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return tsm_dev;
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dev = &tsm_dev->dev;
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rc = dev_set_name(dev, "tsm%d", tsm_dev->id);
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if (rc)
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return ERR_PTR(rc);
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rc = device_add(dev);
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if (rc)
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return ERR_PTR(rc);
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return tsm_register_pci_or_reset(no_free_ptr(tsm_dev), pci_ops);
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}
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EXPORT_SYMBOL_GPL(tsm_register);
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void tsm_unregister(struct tsm_dev *tsm_dev)
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{
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if (tsm_dev->pci_ops)
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pci_tsm_unregister(tsm_dev);
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device_unregister(&tsm_dev->dev);
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}
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EXPORT_SYMBOL_GPL(tsm_unregister);
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static void tsm_release(struct device *dev)
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{
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struct tsm_dev *tsm_dev = container_of(dev, typeof(*tsm_dev), dev);
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ida_free(&tsm_ida, tsm_dev->id);
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kfree(tsm_dev);
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}
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static int __init tsm_init(void)
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{
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tsm_class = class_create("tsm");
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if (IS_ERR(tsm_class))
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return PTR_ERR(tsm_class);
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tsm_class->dev_release = tsm_release;
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return 0;
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}
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module_init(tsm_init)
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static void __exit tsm_exit(void)
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{
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class_destroy(tsm_class);
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}
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module_exit(tsm_exit)
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("TEE Security Manager Class Device");
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