diff --git a/arch/arm/mach-sa1100/include/mach/gpio.h b/arch/arm/mach-sa1100/include/mach/gpio.h
index 703631887c94ae0de4bb66ada4913ce7e05ea4a4..a38fc4f5424166bc587dd9ec664321bb3fb1ded6 100644
--- a/arch/arm/mach-sa1100/include/mach/gpio.h
+++ b/arch/arm/mach-sa1100/include/mach/gpio.h
@@ -51,7 +51,4 @@ static inline void gpio_set_value(unsigned gpio, int value)
 
 #define gpio_cansleep	__gpio_cansleep
 
-#define gpio_to_irq(gpio)	((gpio < 11) ? (IRQ_GPIO0 + gpio) : \
-					(IRQ_GPIO11 - 11 + gpio))
-
 #endif
diff --git a/drivers/gpio/gpio-sa1100.c b/drivers/gpio/gpio-sa1100.c
index b6c1f6d80649a93145daef13d6fcfd042fe20e47..7eecf69362ee9d2b96d02fabc0a04ce1bdc8c3c6 100644
--- a/drivers/gpio/gpio-sa1100.c
+++ b/drivers/gpio/gpio-sa1100.c
@@ -47,12 +47,18 @@ static int sa1100_direction_output(struct gpio_chip *chip, unsigned offset, int
 	return 0;
 }
 
+static int sa1100_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+	return offset < 11 ? (IRQ_GPIO0 + offset) : (IRQ_GPIO11 - 11 + offset);
+}
+
 static struct gpio_chip sa1100_gpio_chip = {
 	.label			= "gpio",
 	.direction_input	= sa1100_direction_input,
 	.direction_output	= sa1100_direction_output,
 	.set			= sa1100_gpio_set,
 	.get			= sa1100_gpio_get,
+	.to_irq			= sa1100_to_irq,
 	.base			= 0,
 	.ngpio			= GPIO_MAX + 1,
 };