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| author | Linus Walleij <linus.walleij@linaro.org> | 2013-10-25 12:59:05 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-10-29 18:26:14 -0700 |
| commit | 403c1d0be5ccbd750d25c59d8358843a81e52e3b (patch) | |
| tree | ee0bafd365c5a3e16ab8fec02d89c94a584230f0 /include/linux/gpio.h | |
| parent | 3c2c628f82a2c48c0d684dbf63b6a4765e784444 (diff) | |
| download | lwn-403c1d0be5ccbd750d25c59d8358843a81e52e3b.tar.gz lwn-403c1d0be5ccbd750d25c59d8358843a81e52e3b.zip | |
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: Fengguang Wu <fengguang.wu@intel.com>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio.h')
| -rw-r--r-- | include/linux/gpio.h | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h index c691df044458..0c56b9e9c209 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -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 */ |