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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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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
/*
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* Internal interface between the core pin control system and the
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* pinmux portions
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*
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* Copyright (C) 2011 ST-Ericsson SA
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* Written on behalf of Linaro for ST-Ericsson
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* Based on bits of regulator core, gpio core and clk core
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*
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* Author: Linus Walleij <linus.walleij@linaro.org>
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*
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* License terms: GNU General Public License (GPL) version 2
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*/
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#ifdef CONFIG_PINMUX
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int pinmux_check_ops(struct pinctrl_dev *pctldev);
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void pinmux_init_device_debugfs(struct dentry *devroot,
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struct pinctrl_dev *pctldev);
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void pinmux_init_debugfs(struct dentry *subsys_root);
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int pinmux_hog_maps(struct pinctrl_dev *pctldev);
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void pinmux_unhog_maps(struct pinctrl_dev *pctldev);
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#else
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static inline int pinmux_check_ops(struct pinctrl_dev *pctldev)
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{
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return 0;
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}
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static inline void pinmux_init_device_debugfs(struct dentry *devroot,
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struct pinctrl_dev *pctldev)
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{
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}
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static inline void pinmux_init_debugfs(struct dentry *subsys_root)
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{
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}
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static inline int pinmux_hog_maps(struct pinctrl_dev *pctldev)
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{
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return 0;
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}
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static inline void pinmux_unhog_maps(struct pinctrl_dev *pctldev)
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{
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}
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#endif
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