From: Arnd Bergmann Date: Wed, 4 Apr 2018 12:53:39 +0000 (+0200) Subject: rbd: avoid Wreturn-type warnings X-Git-Tag: v4.19~1173^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c6244b3b23771b258656445dcd212be759265b84;p=platform%2Fkernel%2Flinux-rpi.git rbd: avoid Wreturn-type warnings In some configurations gcc cannot see that rbd_assert(0) leads to an unreachable code path: drivers/block/rbd.c: In function 'rbd_img_is_write': drivers/block/rbd.c:1397:1: error: control reaches end of non-void function [-Werror=return-type] drivers/block/rbd.c: In function '__rbd_obj_handle_request': drivers/block/rbd.c:2499:1: error: control reaches end of non-void function [-Werror=return-type] drivers/block/rbd.c: In function 'rbd_obj_handle_write': drivers/block/rbd.c:2471:1: error: control reaches end of non-void function [-Werror=return-type] As the rbd_assert() here shows has no extra information beyond the verbose BUG(), we can simply use BUG() directly in its place. This is reliably detected as not returning on any architecture, since it doesn't depend on the unlikely() comparison that confused gcc. Fixes: 3da691bf4366 ("rbd: new request handling code") Signed-off-by: Arnd Bergmann Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov --- diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index d5a5149..e40e490 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1404,7 +1404,7 @@ static bool rbd_img_is_write(struct rbd_img_request *img_req) case OBJ_OP_DISCARD: return true; default: - rbd_assert(0); + BUG(); } } @@ -2478,7 +2478,7 @@ again: } return false; default: - rbd_assert(0); + BUG(); } } @@ -2506,7 +2506,7 @@ static bool __rbd_obj_handle_request(struct rbd_obj_request *obj_req) } return false; default: - rbd_assert(0); + BUG(); } }