mirror of
https://github.com/torvalds/linux.git
synced 2024-11-01 01:31:44 +00:00
b9130b776e
This is needed as otherwise we can get the following when dealing with buggy data in a pinmux driver for pinmux_search_function: Unable to handle kernel NULL pointer dereference at virtual address 00000000 ... PC is at strcmp+0xc/0x34 LR is at pinmux_get+0x350/0x8f4 ... As we need pctldev initialized to call ops->list_functions, let's initialize it before check_ops calls and pass the pctldev to the check_ops functions. Do this for both pinmux and pinconf check_ops functions. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/*
|
|
* Internal interface between the core pin control system and the
|
|
* pinmux portions
|
|
*
|
|
* Copyright (C) 2011 ST-Ericsson SA
|
|
* Written on behalf of Linaro for ST-Ericsson
|
|
* Based on bits of regulator core, gpio core and clk core
|
|
*
|
|
* Author: Linus Walleij <linus.walleij@linaro.org>
|
|
*
|
|
* License terms: GNU General Public License (GPL) version 2
|
|
*/
|
|
#ifdef CONFIG_PINMUX
|
|
|
|
int pinmux_check_ops(struct pinctrl_dev *pctldev);
|
|
void pinmux_init_device_debugfs(struct dentry *devroot,
|
|
struct pinctrl_dev *pctldev);
|
|
void pinmux_init_debugfs(struct dentry *subsys_root);
|
|
int pinmux_hog_maps(struct pinctrl_dev *pctldev);
|
|
void pinmux_unhog_maps(struct pinctrl_dev *pctldev);
|
|
|
|
#else
|
|
|
|
static inline int pinmux_check_ops(struct pinctrl_dev *pctldev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void pinmux_init_device_debugfs(struct dentry *devroot,
|
|
struct pinctrl_dev *pctldev)
|
|
{
|
|
}
|
|
|
|
static inline void pinmux_init_debugfs(struct dentry *subsys_root)
|
|
{
|
|
}
|
|
|
|
static inline int pinmux_hog_maps(struct pinctrl_dev *pctldev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void pinmux_unhog_maps(struct pinctrl_dev *pctldev)
|
|
{
|
|
}
|
|
|
|
#endif
|