1 Backport gpio_is_valid() for gpiolib from linux-2.6.26
2 Index: linux-2.6.25.10/include/asm-generic/gpio.h
3 ===================================================================
4 --- linux-2.6.25.10.orig/include/asm-generic/gpio.h 2008-07-03 05:46:47.000000000 +0200
5 +++ linux-2.6.25.10/include/asm-generic/gpio.h 2008-07-20 20:32:12.000000000 +0200
7 #define ARCH_NR_GPIOS 256
10 +static inline int gpio_is_valid(int number)
12 + /* only some non-negative numbers are valid */
13 + return ((unsigned)number) < ARCH_NR_GPIOS;