From 633739b2fedb6617d782ca252797b7a8ad754347 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 13 Nov 2019 12:07:15 +0100 Subject: [PATCH] rbd: silence bogus uninitialized warning in rbd_object_map_update_finish() Some versions of gcc (so far 6.3 and 7.4) throw a warning: drivers/block/rbd.c: In function 'rbd_object_map_callback': drivers/block/rbd.c:2124:21: warning: 'current_state' may be used uninitialized in this function [-Wmaybe-uninitialized] (current_state == OBJECT_EXISTS && state == OBJECT_EXISTS_CLEAN)) drivers/block/rbd.c:2092:23: note: 'current_state' was declared here u8 state, new_state, current_state; ^~~~~~~~~~~~~ It's bogus because all current_state accesses are guarded by has_current_state. Reported-by: kbuild test robot Signed-off-by: Ilya Dryomov Reviewed-by: Dongsheng Yang --- drivers/block/rbd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 39136675dae5..13527a0b4e44 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -2087,7 +2087,7 @@ static int rbd_object_map_update_finish(struct rbd_obj_request *obj_req, struct rbd_device *rbd_dev = obj_req->img_request->rbd_dev; struct ceph_osd_data *osd_data; u64 objno; - u8 state, new_state, current_state; + u8 state, new_state, uninitialized_var(current_state); bool has_current_state; void *p;