I ran into this build failure during randconfig testing: drivers/input/touchscreen/ad7879.c: In function 'ad7879_parse_dt': drivers/input/touchscreen/ad7879.c:505:8: error: implicit declaration of function 'device_property_read_u32' drivers/input/touchscreen/ad7879.c:512:2: error: implicit declaration of function 'device_property_read_u8' drivers/input/touchscreen/ad7879.c:521:16: error: implicit declaration of function 'device_property_read_bool' I could not figure out when this was introduced, as the code doesn't appear to have changed recently, but the fix of including the header with the declaration is obvious. The calls that require the extra header were introduced a year ago in commit fa6e3ca27442 ("Input: ad7879 - add device tree support"). Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/input/touchscreen/ad7879.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c index 53ab689305ac..1bd870277e1a 100644 --- a/drivers/input/touchscreen/ad7879.c +++ b/drivers/input/touchscreen/ad7879.c @@ -26,6 +26,7 @@ #include <linux/input.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <linux/property.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/gpio.h> -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html