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6e6891ccf0
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct mc13xxx_regulator_priv. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230922175402.work.819-kees@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org>
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* mc13xxx.h - regulators for the Freescale mc13xxx PMIC
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*
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* Copyright (C) 2010 Yong Shen <yong.shen@linaro.org>
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*/
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#ifndef __LINUX_REGULATOR_MC13XXX_H
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#define __LINUX_REGULATOR_MC13XXX_H
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#include <linux/regulator/driver.h>
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struct mc13xxx_regulator {
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struct regulator_desc desc;
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int reg;
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int enable_bit;
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int vsel_reg;
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int vsel_shift;
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int vsel_mask;
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};
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struct mc13xxx_regulator_priv {
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struct mc13xxx *mc13xxx;
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u32 powermisc_pwgt_state;
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struct mc13xxx_regulator *mc13xxx_regulators;
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int num_regulators;
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struct regulator_dev *regulators[] __counted_by(num_regulators);
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};
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extern int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV, unsigned *selector);
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#ifdef CONFIG_OF
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extern int mc13xxx_get_num_regulators_dt(struct platform_device *pdev);
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extern struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
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struct platform_device *pdev, struct mc13xxx_regulator *regulators,
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int num_regulators);
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#else
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static inline int mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
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{
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return -ENODEV;
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}
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static inline struct mc13xxx_regulator_init_data *mc13xxx_parse_regulators_dt(
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struct platform_device *pdev, struct mc13xxx_regulator *regulators,
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int num_regulators)
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{
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return NULL;
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}
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#endif
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extern const struct regulator_ops mc13xxx_regulator_ops;
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extern const struct regulator_ops mc13xxx_fixed_regulator_ops;
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#define MC13xxx_DEFINE(prefix, _name, _node, _reg, _vsel_reg, _voltages, _ops) \
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[prefix ## _name] = { \
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.desc = { \
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.name = #_node, \
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.n_voltages = ARRAY_SIZE(_voltages), \
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.volt_table = _voltages, \
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.ops = &_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = prefix ## _name, \
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.owner = THIS_MODULE, \
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}, \
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.reg = prefix ## _reg, \
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.enable_bit = prefix ## _reg ## _ ## _name ## EN, \
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.vsel_reg = prefix ## _vsel_reg, \
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.vsel_shift = prefix ## _vsel_reg ## _ ## _name ## VSEL,\
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.vsel_mask = prefix ## _vsel_reg ## _ ## _name ## VSEL_M,\
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}
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#define MC13xxx_FIXED_DEFINE(prefix, _name, _node, _reg, _voltages, _ops) \
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[prefix ## _name] = { \
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.desc = { \
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.name = #_node, \
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.n_voltages = ARRAY_SIZE(_voltages), \
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.volt_table = _voltages, \
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.ops = &_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = prefix ## _name, \
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.owner = THIS_MODULE, \
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}, \
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.reg = prefix ## _reg, \
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.enable_bit = prefix ## _reg ## _ ## _name ## EN, \
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}
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#define MC13xxx_GPO_DEFINE(prefix, _name, _node, _reg, _voltages, _ops) \
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[prefix ## _name] = { \
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.desc = { \
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.name = #_node, \
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.n_voltages = ARRAY_SIZE(_voltages), \
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.volt_table = _voltages, \
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.ops = &_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = prefix ## _name, \
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.owner = THIS_MODULE, \
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}, \
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.reg = prefix ## _reg, \
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.enable_bit = prefix ## _reg ## _ ## _name ## EN, \
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}
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#define MC13xxx_DEFINE_SW(_name, _node, _reg, _vsel_reg, _voltages, ops) \
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MC13xxx_DEFINE(SW, _name, _node, _reg, _vsel_reg, _voltages, ops)
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#define MC13xxx_DEFINE_REGU(_name, _node, _reg, _vsel_reg, _voltages, ops) \
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MC13xxx_DEFINE(REGU, _name, _node, _reg, _vsel_reg, _voltages, ops)
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#endif
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