When building with W=1, we get the following warning: drivers/acpi/arm64/agdi.c:88:13: warning: no previous prototype for ‘acpi_agdi_init’ [-Wmissing-prototypes] void __init acpi_agdi_init(void) Include AGDI driver's header file to pull in the prototype definition for acpi_agdi_init() to get rid of the compiler warning Fixes: a2a591fb76e6 ("ACPI: AGDI: Add driver for Arm Generic Diagnostic Dump and Reset device") Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Ilkka Koskinen <ilkka@xxxxxxxxxxxxxxxxxxxxxx> --- drivers/acpi/arm64/agdi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/arm64/agdi.c b/drivers/acpi/arm64/agdi.c index 4df337d545b7..cf31abd0ed1b 100644 --- a/drivers/acpi/arm64/agdi.c +++ b/drivers/acpi/arm64/agdi.c @@ -9,6 +9,7 @@ #define pr_fmt(fmt) "ACPI: AGDI: " fmt #include <linux/acpi.h> +#include <linux/acpi_agdi.h> #include <linux/arm_sdei.h> #include <linux/io.h> #include <linux/kernel.h> -- 2.17.1