diff options
Diffstat (limited to 'include/linux/gpio.h')
| -rw-r--r-- | include/linux/gpio.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 4aaedcf424ce..56ac7e7a2889 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -74,6 +74,12 @@ static inline bool gpio_is_valid(int number) * Until they are all fixed, leave 0-512 space for them. */ #define GPIO_DYNAMIC_BASE 512 +/* + * Define the maximum of the possible GPIO in the global numberspace. + * While the GPIO base and numbers are positive, we limit it with signed + * maximum as a lot of code is using negative values for special cases. + */ +#define GPIO_DYNAMIC_MAX INT_MAX /* Always use the library code for GPIO management calls, * or when sleeping may be involved. |