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Immutable tag for the regulator tree to pull from

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gpio: provide gpiod_is_equal()
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Merge tag 'gpiod-is-equal-for-v6.16-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/brgl/linux into gpio/for-next

Immutable tag for the regulator tree to pull from

gpio: provide gpiod_is_equal()
This commit is contained in:
Bartosz Golaszewski 2025-04-09 09:58:22 +02:00
commit dad3386b18
2 changed files with 23 additions and 0 deletions
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14
drivers/gpio/gpiolib.c
View File

@ -265,6 +265,20 @@ struct gpio_device *gpiod_to_gpio_device(struct gpio_desc *desc)
}
EXPORT_SYMBOL_GPL(gpiod_to_gpio_device);
/**
* gpiod_is_equal() - Check if two GPIO descriptors refer to the same pin.
* @desc: Descriptor to compare.
* @other: The second descriptor to compare against.
*
* Returns:
* True if the descriptors refer to the same physical pin. False otherwise.
*/
bool gpiod_is_equal(struct gpio_desc *desc, struct gpio_desc *other)
{
return desc == other;
}
EXPORT_SYMBOL_GPL(gpiod_is_equal);
/**
* gpio_device_get_base() - Get the base GPIO number allocated by this device
* @gdev: GPIO device

9
include/linux/gpio/consumer.h
View File

@ -180,6 +180,8 @@ struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
enum gpiod_flags flags,
const char *label);
bool gpiod_is_equal(struct gpio_desc *desc, struct gpio_desc *other);
#else /* CONFIG_GPIOLIB */
#include <linux/bug.h>
@ -547,6 +549,13 @@ struct gpio_desc *devm_fwnode_gpiod_get_index(struct device *dev,
return ERR_PTR(-ENOSYS);
}
static inline bool
gpiod_is_equal(struct gpio_desc *desc, struct gpio_desc *other)
{
WARN_ON(desc || other);
return false;
}
#endif /* CONFIG_GPIOLIB */
#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_HTE)