Contributors: 14
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jason Gunthorpe |
112 |
51.14% |
5 |
25.00% |
| Kylene Jo Hall |
29 |
13.24% |
1 |
5.00% |
| James Bottomley |
25 |
11.42% |
1 |
5.00% |
| Daniel De Graaf |
20 |
9.13% |
1 |
5.00% |
| Tadeusz Struk |
8 |
3.65% |
2 |
10.00% |
| Jaewon Yang |
6 |
2.74% |
1 |
5.00% |
| Peter Hüwe |
6 |
2.74% |
2 |
10.00% |
| Jarkko Sakkinen |
4 |
1.83% |
1 |
5.00% |
| Leendert van Doorn |
2 |
0.91% |
1 |
5.00% |
| Linus Torvalds (pre-git) |
2 |
0.91% |
1 |
5.00% |
| Thomas Gleixner |
2 |
0.91% |
1 |
5.00% |
| Kees Cook |
1 |
0.46% |
1 |
5.00% |
| Rajiv Andrade |
1 |
0.46% |
1 |
5.00% |
| Linus Torvalds |
1 |
0.46% |
1 |
5.00% |
| Total |
219 |
|
20 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2004 IBM Corporation
* Authors:
* Leendert van Doorn <leendert@watson.ibm.com>
* Dave Safford <safford@watson.ibm.com>
* Reiner Sailer <sailer@watson.ibm.com>
* Kylene Hall <kjhall@us.ibm.com>
*
* Copyright (C) 2013 Obsidian Research Corp
* Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
*
* Device file system interface to the TPM
*/
#include <linux/slab.h>
#include "tpm-dev.h"
static int tpm_open(struct inode *inode, struct file *file)
{
struct tpm_chip *chip;
struct file_priv *priv;
chip = container_of(inode->i_cdev, struct tpm_chip, cdev);
/* It's assured that the chip will be opened just once,
* by the check of is_open variable, which is protected
* by driver_lock. */
if (test_and_set_bit(0, &chip->is_open)) {
dev_dbg(&chip->dev, "Another process owns this TPM\n");
return -EBUSY;
}
priv = kzalloc_obj(*priv);
if (priv == NULL)
goto out;
tpm_common_open(file, chip, priv, NULL);
return nonseekable_open(inode, file);
out:
clear_bit(0, &chip->is_open);
return -ENOMEM;
}
/*
* Called on file close
*/
static int tpm_release(struct inode *inode, struct file *file)
{
struct file_priv *priv = file->private_data;
tpm_common_release(file, priv);
clear_bit(0, &priv->chip->is_open);
kfree(priv);
return 0;
}
const struct file_operations tpm_fops = {
.owner = THIS_MODULE,
.open = tpm_open,
.read = tpm_common_read,
.write = tpm_common_write,
.poll = tpm_common_poll,
.release = tpm_release,
};