commit bb104b682397752ff90ca11e90b231129fc58f88
author Gang Li <gang.li@linux.dev> Mon Aug 21 11:34:19 2023 +0800
committer Michal Kubecek <mkubecek@suse.cz> Mon Aug 28 00:50:15 2023 +0200
tree fdb3bcf0aaa3b9a08835beb7aa3edc4081957f6c
parent 125b080e26cf4c3a5b0ce62531336dbdc8711337

netlink: Allow nl_sset return -EOPNOTSUPP to fallback to do_sset

Currently, nl_sset treats any negative value returned by nl_parser
(including -EOPNOTSUPP) as `1`. Consequently, netlink_run_handler
directly calls exit without returning to main and invoking do_sset
through ioctl_init.

To fallback to do_sset, this commit allows nl_sset return -EOPNOTSUPP.

Fixes: 6c19c0d559c8 ("netlink: use genetlink ops information to decide about fallback")
Signed-off-by: Gang Li <gang.li@linux.dev>