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Commit 1687b204 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Greg Kroah-Hartman
Browse files

rbd: work around -Wuninitialized warning 



[ Upstream commit a55e601b2f02df5db7070e9a37bd655c9c576a52 ]

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: default avatarArnd Bergmann <arnd@arndb.de>
Reviewed-by: default avatarIlya Dryomov <idryomov@gmail.com>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent bd4e1894

drivers/block/rbd.c

+1 −1
Original line number Diff line number Diff line
@@ -2739,7 +2739,7 @@ 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,