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Merge tag 'gpio-remove-gpiochip_is_requested-for-v6.8-rc1' into gpio/for-next

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gpio: remove gpiochip_is_requested()

- provide a safer alternative to gpiochip_is_requested()
- convert all existing users
- remove gpiochip_is_requested()
This commit is contained in:
Bartosz Golaszewski
2023-12-08 09:37:12 +01:00
parent c598dc3bc4 f8d05e276b
commit 11a94a335a
9 changed files with 96 additions and 47 deletions
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39
include/linux/gpio/driver.h
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@@ -531,19 +531,40 @@ struct gpio_chip {
#endif /* CONFIG_OF_GPIO */
};
const char *gpiochip_is_requested(struct gpio_chip *gc, unsigned int offset);
char *gpiochip_dup_line_label(struct gpio_chip *gc, unsigned int offset);
struct _gpiochip_for_each_data {
const char **label;
unsigned int *i;
};
DEFINE_CLASS(_gpiochip_for_each_data,
struct _gpiochip_for_each_data,
if (*_T.label) kfree(*_T.label),
({
struct _gpiochip_for_each_data _data = { label, i };
*_data.i = 0;
_data;
}),
const char **label, int *i)
/**
* for_each_requested_gpio_in_range - iterates over requested GPIOs in a given range
* @chip: the chip to query
* @i: loop variable
* @base: first GPIO in the range
* @size: amount of GPIOs to check starting from @base
* @label: label of current GPIO
* @_chip: the chip to query
* @_i: loop variable
* @_base: first GPIO in the range
* @_size: amount of GPIOs to check starting from @base
* @_label: label of current GPIO
*/
#define for_each_requested_gpio_in_range(chip, i, base, size, label) \
for (i = 0; i < size; i++) \
if ((label = gpiochip_is_requested(chip, base + i)) == NULL) {} else
#define for_each_requested_gpio_in_range(_chip, _i, _base, _size, _label) \
for (CLASS(_gpiochip_for_each_data, _data)(&_label, &_i); \
*_data.i < _size; \
(*_data.i)++, kfree(*(_data.label)), *_data.label = NULL) \
if ((*_data.label = \
gpiochip_dup_line_label(_chip, _base + *_data.i)) == NULL) {} \
else if (IS_ERR(*_data.label)) {} \
else
/* Iterates over all requested GPIO of the given @chip */
#define for_each_requested_gpio(chip, i, label) \