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>
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index c691df0..0c56b9e 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -77,6 +77,15 @@
#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 @@
WARN_ON(1);
}
+static inline int devm_gpio_request(struct device *dev, unsigned gpio,
+ const char *label)
+{
+ WARN_ON(1);
+ return -EINVAL;
+}
+
+static inline int devm_gpio_request_one(struct device *dev, unsigned gpio,
+ unsigned long flags, const char *label)
+{
+ WARN_ON(1);
+ return -EINVAL;
+}
+
+static inline void devm_gpio_free(struct device *dev, unsigned int gpio)
+{
+ WARN_ON(1);
+}
+
#endif /* ! CONFIG_GPIOLIB */
-struct device;
-
-/* 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);
-
#endif /* __LINUX_GPIO_H */