ARM: 5731/2: Fix U300 generic GPIO, remove ifdefs from MMCI v3

[safe/jmp/linux-2.6] / arch / arm / mach-u300 / gpio.c

diff --git a/arch/arm/mach-u300/gpio.c b/arch/arm/mach-u300/gpio.c
index 63c8f27..0b35826 100644 (file)
--- a/arch/arm/mach-u300/gpio.c
+++ b/arch/arm/mach-u300/gpio.c
@@ -281,6 +281,16 @@ int gpio_unregister_callback(unsigned gpio)
 }
 EXPORT_SYMBOL(gpio_unregister_callback);
 
+/* Non-zero means valid */
+int gpio_is_valid(int number)
+{
+       if (number >= 0 &&
+           number < (U300_GPIO_NUM_PORTS * U300_GPIO_PINS_PER_PORT))
+               return 1;
+       return 0;
+}
+EXPORT_SYMBOL(gpio_is_valid);
+
 int gpio_request(unsigned gpio, const char *label)
 {
        if (gpio_pin[gpio].users)