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gpiolib: devres: Get rid of unused devm_gpio_free()

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The last user, which in fact was a dead code, has gone a year ago,
previous one 3 years ago. On top of that we want to drop away the
legacy GPIO APIs in the kernel, so take a chance to get rid of
unused devm_gpio_free() and accompanying stuff.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
This commit is contained in:
Andy Shevchenko 2022-06-22 20:28:42 +03:00 committed by Bartosz Golaszewski
parent ff6992735a
commit 2b038e786f
3 changed files with 0 additions and 39 deletions
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1
Documentation/driver-api/driver-model/devres.rst
View file

@ -277,7 +277,6 @@ GPIO
devm_gpiochip_add_data()
devm_gpio_request()
devm_gpio_request_one()
devm_gpio_free()
I2C
devm_i2c_new_dummy_device()

32
drivers/gpio/gpiolib-devres.c
View file

@ -375,9 +375,6 @@ void devm_gpiod_put_array(struct device *dev, struct gpio_descs *descs)
}
EXPORT_SYMBOL_GPL(devm_gpiod_put_array);
static void devm_gpio_release(struct device *dev, void *res)
{
unsigned *gpio = res;
@ -385,13 +382,6 @@ static void devm_gpio_release(struct device *dev, void *res)
gpio_free(*gpio);
}
static int devm_gpio_match(struct device *dev, void *res, void *data)
{
unsigned *this = res, *gpio = data;
return *this == *gpio;
}
/**
* devm_gpio_request - request a GPIO for a managed device
* @dev: device to request the GPIO for
@ -402,11 +392,7 @@ static int devm_gpio_match(struct device *dev, void *res, void *data)
* same arguments and performs the same function as
* gpio_request(). GPIOs requested with this function will be
* automatically freed on driver detach.
*
* If an GPIO allocated with this function needs to be freed
* separately, devm_gpio_free() must be used.
*/
int devm_gpio_request(struct device *dev, unsigned gpio, const char *label)
{
unsigned *dr;
@ -459,24 +445,6 @@ int devm_gpio_request_one(struct device *dev, unsigned gpio,
}
EXPORT_SYMBOL_GPL(devm_gpio_request_one);
/**
* devm_gpio_free - free a GPIO
* @dev: device to free GPIO for
* @gpio: GPIO to free
*
* Except for the extra @dev argument, this function takes the
* same arguments and performs the same function as gpio_free().
* This function instead of gpio_free() should be used to manually
* free GPIOs allocated with devm_gpio_request().
*/
void devm_gpio_free(struct device *dev, unsigned int gpio)
{
WARN_ON(devres_release(dev, devm_gpio_release, devm_gpio_match,
&gpio));
}
EXPORT_SYMBOL_GPL(devm_gpio_free);
static void devm_gpio_chip_release(void *data)
{
struct gpio_chip *gc = data;

6
include/linux/gpio.h
View file

@ -95,7 +95,6 @@ struct device;
int devm_gpio_request(struct device *dev, unsigned gpio, const char *label);
int devm_gpio_request_one(struct device *dev, unsigned gpio,
unsigned long flags, const char *label);
void devm_gpio_free(struct device *dev, unsigned int gpio);
#else /* ! CONFIG_GPIOLIB */
@ -240,11 +239,6 @@ static inline int devm_gpio_request_one(struct device *dev, unsigned gpio,
return -EINVAL;
}
static inline void devm_gpio_free(struct device *dev, unsigned int gpio)
{
WARN_ON(1);
}
#endif /* ! CONFIG_GPIOLIB */
#endif /* __LINUX_GPIO_H */