From af175e85f92c870386ad74f466e29537b79611d3 Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Tue, 7 Jul 2020 18:06:03 +0200 Subject: error: Eliminate error_propagate() with Coccinelle, part 2 When all we do with an Error we receive into a local variable is propagating to somewhere else, we can just as well receive it there right away. The previous commit did that with a Coccinelle script I consider fairly trustworthy. This commit uses the same script with the matching of return taken out, i.e. we convert if (!foo(..., &err)) { ... error_propagate(errp, err); ... } to if (!foo(..., errp)) { ... ... } This is unsound: @err could still be read between afterwards. I don't know how to express "no read of @err without an intervening write" in Coccinelle. Instead, I manually double-checked for uses of @err. Suboptimal line breaks tweaked manually. qdev_realize() simplified further to placate scripts/checkpatch.pl. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Message-Id: <20200707160613.848843-36-armbru@redhat.com> --- blockdev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'blockdev.c') diff --git a/blockdev.c b/blockdev.c index 705869d849..1f254e7110 100644 --- a/blockdev.c +++ b/blockdev.c @@ -863,8 +863,7 @@ DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type, legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, &error_abort); - if (!qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err)) { - error_propagate(errp, local_err); + if (!qemu_opts_absorb_qdict(legacy_opts, bs_opts, errp)) { goto fail; } -- cgit v1.2.3