diff options
author | Markus Armbruster <armbru@redhat.com> | 2020-07-07 18:06:03 +0200 |
---|---|---|
committer | Markus Armbruster <armbru@redhat.com> | 2020-07-10 15:18:08 +0200 |
commit | af175e85f92c870386ad74f466e29537b79611d3 (patch) | |
tree | a2b62ef63640b200b969ff3eb7c0a4c1fd0be013 /net/tap.c | |
parent | 668f62ec621e4e2919fb7d4caa5d805764c5852d (diff) |
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 <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-36-armbru@redhat.com>
Diffstat (limited to 'net/tap.c')
-rw-r--r-- | net/tap.c | 3 |
1 files changed, 1 insertions, 2 deletions
@@ -836,9 +836,8 @@ int net_init_tap(const Netdev *netdev, const char *name, } for (i = 0; i < nfds; i++) { - fd = monitor_fd_param(cur_mon, fds[i], &err); + fd = monitor_fd_param(cur_mon, fds[i], errp); if (fd == -1) { - error_propagate(errp, err); ret = -1; goto free_fail; } |