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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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>
121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright IBM Corp. 2004
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*
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* Tape class device support
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*
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* Author: Stefan Bader <shbader@de.ibm.com>
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* Based on simple class device code by Greg K-H
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*/
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#define pr_fmt(fmt) "tape: " fmt
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#include <linux/export.h>
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#include <linux/slab.h>
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#include "tape_class.h"
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static const struct class tape_class = {
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.name = "tape390",
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};
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/*
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* Register a tape device and return a pointer to the cdev structure.
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*
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* device
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* The pointer to the struct device of the physical (base) device.
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* drivername
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* The pointer to the drivers name for it's character devices.
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* dev
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* The intended major/minor number. The major number may be 0 to
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* get a dynamic major number.
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* fops
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* The pointer to the drivers file operations for the tape device.
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* devname
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* The pointer to the name of the character device.
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*/
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struct tape_class_device *register_tape_dev(
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struct device * device,
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dev_t dev,
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const struct file_operations *fops,
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char * device_name,
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char * mode_name)
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{
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struct tape_class_device * tcd;
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int rc;
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char * s;
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tcd = kzalloc_obj(struct tape_class_device);
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if (!tcd)
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return ERR_PTR(-ENOMEM);
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strscpy(tcd->device_name, device_name, TAPECLASS_NAME_LEN);
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for (s = strchr(tcd->device_name, '/'); s; s = strchr(s, '/'))
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*s = '!';
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strscpy(tcd->mode_name, mode_name, TAPECLASS_NAME_LEN);
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for (s = strchr(tcd->mode_name, '/'); s; s = strchr(s, '/'))
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*s = '!';
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tcd->char_device = cdev_alloc();
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if (!tcd->char_device) {
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rc = -ENOMEM;
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goto fail_with_tcd;
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}
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tcd->char_device->owner = fops->owner;
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tcd->char_device->ops = fops;
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rc = cdev_add(tcd->char_device, dev, 1);
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if (rc)
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goto fail_with_cdev;
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tcd->class_device = device_create(&tape_class, device,
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tcd->char_device->dev, NULL,
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"%s", tcd->device_name);
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rc = PTR_ERR_OR_ZERO(tcd->class_device);
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if (rc)
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goto fail_with_cdev;
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rc = sysfs_create_link(
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&device->kobj,
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&tcd->class_device->kobj,
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tcd->mode_name
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);
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if (rc)
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goto fail_with_class_device;
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return tcd;
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fail_with_class_device:
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device_destroy(&tape_class, tcd->char_device->dev);
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fail_with_cdev:
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cdev_del(tcd->char_device);
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fail_with_tcd:
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kfree(tcd);
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return ERR_PTR(rc);
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}
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EXPORT_SYMBOL(register_tape_dev);
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void unregister_tape_dev(struct device *device, struct tape_class_device *tcd)
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{
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if (tcd != NULL && !IS_ERR(tcd)) {
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sysfs_remove_link(&device->kobj, tcd->mode_name);
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device_destroy(&tape_class, tcd->char_device->dev);
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cdev_del(tcd->char_device);
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kfree(tcd);
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}
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}
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EXPORT_SYMBOL(unregister_tape_dev);
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int tape_class_init(void)
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{
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return class_register(&tape_class);
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}
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void tape_class_exit(void)
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{
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class_unregister(&tape_class);
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}
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