mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Kent Yoder](/assets/img/avatar_default.png)
When no i2c bus exists, user-space can cause an oops by triggering a device probe through a message sent to an i2c "new_device" sysfs entry. Adding a check for a NULL i2c client structure in the probe function closes the hole. This patch also fixes accessing the NULL client struct in the print function call reporting the error. Reported-by: Peter Hüwe <PeterHuewe@gmx.de> Signed-off-by: Kent Yoder <key@linux.vnet.ibm.com>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
|
|
* STMicroelectronics TPM I2C Linux driver for TPM ST33ZP24
|
|
* Copyright (C) 2009, 2010 STMicroelectronics
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* STMicroelectronics version 1.2.0, Copyright (C) 2010
|
|
* STMicroelectronics comes with ABSOLUTELY NO WARRANTY.
|
|
* This is free software, and you are welcome to redistribute it
|
|
* under certain conditions.
|
|
*
|
|
* @Author: Christophe RICARD tpmsupport@st.com
|
|
*
|
|
* @File: stm_st33_tpm_i2c.h
|
|
*
|
|
* @Date: 09/15/2010
|
|
*/
|
|
#ifndef __STM_ST33_TPM_I2C_MAIN_H__
|
|
#define __STM_ST33_TPM_I2C_MAIN_H__
|
|
|
|
#define TPM_ACCESS (0x0)
|
|
#define TPM_STS (0x18)
|
|
#define TPM_HASH_END (0x20)
|
|
#define TPM_DATA_FIFO (0x24)
|
|
#define TPM_HASH_DATA (0x24)
|
|
#define TPM_HASH_START (0x28)
|
|
#define TPM_INTF_CAPABILITY (0x14)
|
|
#define TPM_INT_STATUS (0x10)
|
|
#define TPM_INT_ENABLE (0x08)
|
|
|
|
#define TPM_DUMMY_BYTE 0xAA
|
|
#define TPM_WRITE_DIRECTION 0x80
|
|
#define TPM_HEADER_SIZE 10
|
|
#define TPM_BUFSIZE 2048
|
|
|
|
#define LOCALITY0 0
|
|
|
|
#define TPM_ST33_I2C "st33zp24_i2c"
|
|
|
|
struct st33zp24_platform_data {
|
|
int io_serirq;
|
|
int io_lpcpd;
|
|
struct i2c_client *client;
|
|
u8 *tpm_i2c_buffer[2]; /* 0 Request 1 Response */
|
|
struct completion irq_detection;
|
|
struct mutex lock;
|
|
};
|
|
|
|
#endif /* __STM_ST33_TPM_I2C_MAIN_H__ */
|