From: Arnd Bergmann arnd@arndb.de
[ 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: Arnd Bergmann arnd@arndb.de Reviewed-by: Ilya Dryomov idryomov@gmail.com Signed-off-by: Ilya Dryomov idryomov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 2b184563cd32e..38dcb39051a7f 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,