From: Austin Kim <austin.kim@xxxxxxx> commit a32ad90426a9c8eb3915eed26e08ce133bd9e0da upstream. With W=1 build, the compiler throws warning message as below: security/integrity/ima/ima_mok.c:24:12: warning: no previous prototype for ‘ima_mok_init’ [-Wmissing-prototypes] __init int ima_mok_init(void) Silence the warning by adding static keyword to ima_mok_init(). Signed-off-by: Austin Kim <austin.kim@xxxxxxx> Fixes: 41c89b64d718 ("IMA: create machine owner and blacklist keyrings") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- security/integrity/ima/ima_mok.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/security/integrity/ima/ima_mok.c +++ b/security/integrity/ima/ima_mok.c @@ -25,7 +25,7 @@ struct key *ima_blacklist_keyring; /* * Allocate the IMA blacklist keyring */ -__init int ima_mok_init(void) +static __init int ima_mok_init(void) { pr_notice("Allocating IMA blacklist keyring.\n");