tpm: st33zp24: fix potential buffer overruns caused by bit glitches on the bus
[sfrench/cifs-2.6.git] / drivers / char / tpm / tpm-dev.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _TPM_DEV_H
3 #define _TPM_DEV_H
4
5 #include "tpm.h"
6
7 struct file_priv {
8         struct tpm_chip *chip;
9
10         /* Data passed to and from the tpm via the read/write calls */
11         atomic_t data_pending;
12         struct mutex buffer_mutex;
13
14         struct timer_list user_read_timer;      /* user needs to claim result */
15         struct work_struct work;
16
17         u8 data_buffer[TPM_BUFSIZE];
18 };
19
20 void tpm_common_open(struct file *file, struct tpm_chip *chip,
21                      struct file_priv *priv);
22 ssize_t tpm_common_read(struct file *file, char __user *buf,
23                         size_t size, loff_t *off);
24 ssize_t tpm_common_write(struct file *file, const char __user *buf,
25                          size_t size, loff_t *off, struct tpm_space *space);
26 void tpm_common_release(struct file *file, struct file_priv *priv);
27
28 #endif