From a55e601b2f02df5db7070e9a37bd655c9c576a52 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 7 Jan 2020 22:01:04 +0100
Subject: [PATCH] rbd: work around -Wuninitialized warning
Git-commit: a55e601b2f02df5db7070e9a37bd655c9c576a52
Patch-mainline: v5.6-rc1
References: git-fixes
gcc -O3 warns about a dummy variable that is passed
down into rbd_img_fill_nodata without being initialized:
Drivers/block/rbd.c: In function 'rbd_img_fill_nodata':
drivers/block/rbd.c:2573:13: error: 'dummy' is used uninitialized in this function [-Werror=uninitialized]
fctx->iter = *fctx->pos;
Since this is a dummy, I assume the warning is harmless, but
it's better to initialize it anyway and avoid the warning.
Fixes: mmtom ("init/Kconfig: enable -O3 for all arches")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Coly Li <colyli@suse.de>
---
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 2b184563cd32..38dcb39051a7 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -2662,7 +2662,7 @@ static int rbd_img_fill_nodata(struct rbd_img_request *img_req,
u64 off, u64 len)
{
struct ceph_file_extent ex = { off, len };
- union rbd_img_fill_iter dummy;
+ union rbd_img_fill_iter dummy = {};
struct rbd_img_fill_ctx fctx = {
.pos_type = OBJ_REQUEST_NODATA,
.pos = &dummy,
--
2.35.3