From: Arnd Bergmann <arnd@arndb.de>

The kdb_kbd_cleanup_state() is called from another file through
the kdb_private.h file, but that is not included before the
definition, causing a W=1 warning:

kernel/debug/kdb/kdb_keyboard.c:198:6: error: no previous prototype for 'kdb_kbd_cleanup_state' [-Werror=missing-prototypes]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 kernel/debug/kdb/kdb_keyboard.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboard.c
index f87c750d3eb3..3c2987f46f6e 100644
--- a/kernel/debug/kdb/kdb_keyboard.c
+++ b/kernel/debug/kdb/kdb_keyboard.c
@@ -13,6 +13,8 @@
 #include <linux/ctype.h>
 #include <linux/io.h>
 
+#include "kdb_private.h"
+
 /* Keyboard Controller Registers on normal PCs. */
 
 #define KBD_STATUS_REG		0x64	/* Status register (R) */
-- 
2.39.2

Hi,

On Wed, May 17, 2023 at 5:48 AM Arnd Bergmann <arnd@kernel.org> wrote:
>
> From: Arnd Bergmann <arnd@arndb.de>
>
> The kdb_kbd_cleanup_state() is called from another file through
> the kdb_private.h file, but that is not included before the
> definition, causing a W=1 warning:
>
> kernel/debug/kdb/kdb_keyboard.c:198:6: error: no previous prototype for 'kdb_kbd_cleanup_state' [-Werror=missing-prototypes]
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
>  kernel/debug/kdb/kdb_keyboard.c | 2 ++
>  1 file changed, 2 insertions(+)

Reviewed-by: Douglas Anderson <dianders@chromium.org>