gpio: ks8695: remove irq_to_gpio function
The ks8695 gpio driver has its own copy of the irq_to_gpio()
function. This is completely unused in the mainline kernel
after we converted all remaining users several years ago,
so we can remove the definition as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-ks8695.c b/drivers/gpio/gpio-ks8695.c
index 9f86ed9..179723d 100644
--- a/drivers/gpio/gpio-ks8695.c
+++ b/drivers/gpio/gpio-ks8695.c
@@ -205,18 +205,6 @@
return gpio_irq[pin];
}
-/*
- * Map IRQ number to GPIO line.
- */
-int irq_to_gpio(unsigned int irq)
-{
- if ((irq < KS8695_IRQ_EXTERN0) || (irq > KS8695_IRQ_EXTERN3))
- return -EINVAL;
-
- return (irq - KS8695_IRQ_EXTERN0);
-}
-EXPORT_SYMBOL(irq_to_gpio);
-
/* GPIOLIB interface */
static struct gpio_chip ks8695_gpio_chip = {