As discussed on i2c mailing list with David Brownell, and number outside of the 0...MAX_INT range is invalid as a GPIO number. Define a macro, similar to NO_IRQ, to be used as a deliberate invalid GPIO, rather than defining a is_valid_gpio() macro.
Signed-off-by: Guennadi Liakhovetski <[EMAIL PROTECTED]> --- As gpiolib doesn't seem to have an own mailing list, sending it directly to LKML. include/asm-generic/gpio.h | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index f29a502..806b86c 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -16,6 +16,10 @@ #define ARCH_NR_GPIOS 256 #endif +#ifndef NO_GPIO +#define NO_GPIO ((unsigned int)-1) +#endif + struct seq_file; /** -- 1.5.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
