c7fbafe1ad
These days, DEV_OPEN calls to character drivers block the calling thread until completion or failure, and thus never return SUSPEND to the caller. The same already applied to BDEV_OPEN calls to block drivers. It has thus become impossible for a process to enter a state of being blocked on a device open call. There is currently no support for restarting device open calls to restarted character drivers. This support was present in the _DOPEN logic, but was already no longer triggering. In the future, this case should be handled by the thread performing the open request. Change-Id: I6cc1e7b4c9ed116c6ce160b315e6e060124dce00