From: Arnd Bergmann <arnd@xxxxxxxx> The devmem_is_allowed() function is defined in a file of the same name, but the declaration is in asm/io.h, which is not included there, causing a W=1 warning: lib/devmem_is_allowed.c:20:5: error: no previous prototype for 'devmem_is_allowed' [-Werror=missing-prototypes] Include the appropriate header to avoid the warning. Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- lib/devmem_is_allowed.c | 1 + 1 file changed, 1 insertion(+) diff --git a/lib/devmem_is_allowed.c b/lib/devmem_is_allowed.c index 60be9e24bd57..9c060c69f134 100644 --- a/lib/devmem_is_allowed.c +++ b/lib/devmem_is_allowed.c @@ -10,6 +10,7 @@ #include <linux/mm.h> #include <linux/ioport.h> +#include <linux/io.h> /* * devmem_is_allowed() checks to see if /dev/mem access to a certain address -- 2.39.2
