Revert "gpio: remove broken irq_to_gpio() interface"
This reverts commit ee2204a37957daed80418ea8ffc4f5c3146fb8e7.
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index 6fc1c9e..d12b5d5 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -70,6 +70,11 @@
return __gpio_to_irq(gpio);
}
+static inline int irq_to_gpio(unsigned int irq)
+{
+ return -EINVAL;
+}
+
#endif /* ! CONFIG_ARCH_HAVE_CUSTOM_GPIO_H */
/* CONFIG_GPIOLIB: bindings for managed devices that want to request gpios */
@@ -217,6 +222,13 @@
WARN_ON(1);
}
+static inline int irq_to_gpio(unsigned irq)
+{
+ /* irq can never have been returned from gpio_to_irq() */
+ WARN_ON(1);
+ return -EINVAL;
+}
+
static inline int
gpiochip_add_pin_range(struct gpio_chip *chip, const char *pinctl_name,
unsigned int gpio_offset, unsigned int pin_offset,