Did something break during a rebase? This doesn't appear to work for me (on 6.14-rc2, with CONFIG_NTSYNC=y). `/dev/ntsync` exists but `lsof` doesn't find any processes that have it open even while wine is running. This MR also has almost no debug logs so it's hard to say what's going wrong.
edit:
`device` is -1 from `get_linux_sync_device`