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Commit 403c1d0b authored by Linus Walleij's avatar Linus Walleij
Browse files

gpio: provide stubs for devres gpio functions 



commit 6b3d8145dcfdbbb43f13544e16f44f4574f941dd
"gpiolib: make GPIO_DEVRES depend on GPIOLIB"
breaks builds when device drivers are using devm_gpio*
devres functions without enabling GPIOLIB, relying on
the devres code to be compiled anyway.

Provide stubs so that we get these if we're using the
devres functions without GPIOLIB.

Reported-by: default avatarFengguang Wu <fengguang.wu@intel.com>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 3c2c628f

include/linux/gpio.h

+27 −7
Original line number Diff line number Diff line
@@ -77,6 +77,15 @@ static inline int irq_to_gpio(unsigned int irq) 


#endif /* ! CONFIG_ARCH_HAVE_CUSTOM_GPIO_H */



/* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */



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 */



#include <linux/kernel.h>
@@ -241,14 +250,25 @@ gpiochip_remove_pin_ranges(struct gpio_chip *chip) 
	WARN_ON(1);

}



#endif /* ! CONFIG_GPIOLIB */

static inline int devm_gpio_request(struct device *dev, unsigned gpio,

				    const char *label)

{

	WARN_ON(1);

	return -EINVAL;

}



struct device;

static inline int devm_gpio_request_one(struct device *dev, unsigned gpio,

					unsigned long flags, const char *label)

{

	WARN_ON(1);

	return -EINVAL;

}



/* bindings for managed devices that want to request gpios */

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);

static inline void devm_gpio_free(struct device *dev, unsigned int gpio)

{

	WARN_ON(1);

}



#endif /* ! CONFIG_GPIOLIB */



#endif /* __LINUX_GPIO_H */