2 files changed, 19 insertions, 9 deletions

diff --git a/arch/arm/mach-ep93xx/include/mach/gpio.h b/arch/arm/mach-ep93xx/include/mach/gpio.h
index 071f676c6e09..76c68faca943 100644
--- a/arch/arm/mach-ep93xx/include/mach/gpio.h
+++ b/arch/arm/mach-ep93xx/include/mach/gpio.h
@@ -99,14 +99,7 @@
 /* maximum value for irq capable line identifiers */
 #define EP93XX_GPIO_LINE_MAX_IRQ        EP93XX_GPIO_LINE_F(7)
 
-/*
- * Map GPIO A0..A7  (0..7)  to irq 64..71,
- *          B0..B7  (7..15) to irq 72..79, and
- *          F0..F7 (16..24) to irq 80..87.
- */
-#define gpio_to_irq(gpio)       \
-        (((gpio) <= EP93XX_GPIO_LINE_MAX_IRQ) ? (64 + (gpio)) : -EINVAL)
-
+#define gpio_to_irq             __gpio_to_irq
 #define irq_to_gpio(irq)        ((irq) - gpio_to_irq(0))
 
 #endif
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index 72fb9c665320..fbd6a6066777 100644
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c
@@ -307,6 +307,21 @@ static int ep93xx_gpio_set_debounce(struct gpio_chip *chip,
         return 0;
 }
 
+/*
+ * Map GPIO A0..A7  (0..7)  to irq 64..71,
+ *          B0..B7  (7..15) to irq 72..79, and
+ *          F0..F7 (16..24) to irq 80..87.
+ */
+static int ep93xx_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+        int gpio = chip->base + offset;
+
+        if (gpio > EP93XX_GPIO_LINE_MAX_IRQ)
+                return -EINVAL;
+
+        return 64 + gpio;
+}
+
 static int ep93xx_gpio_add_bank(struct bgpio_chip *bgc, struct device *dev,
         void __iomem *mmio_base, struct ep93xx_gpio_bank *bank)
 {
@@ -321,8 +336,10 @@ static int ep93xx_gpio_add_bank(struct bgpio_chip *bgc, struct device *dev,
         bgc->gc.label = bank->label;
         bgc->gc.base = bank->base;
 
-        if (bank->has_debounce)
+        if (bank->has_debounce) {
                 bgc->gc.set_debounce = ep93xx_gpio_set_debounce;
+                bgc->gc.to_irq = ep93xx_gpio_to_irq;
+        }
 
         return gpiochip_add(&bgc->gc);
 }