Re: [PATCH] bsg referencing bus driver module

[Anatoliy Glagolev]

Any thoughts on this? Can we really drop a reference from a child device
(bsg_class_device) to a parent device (Scsi_Host) while the child device
is still around at fc_bsg_remove time?

If not, please consider a fix with module references. I realized that
the previous version of the fix had a problem since bsg_open may run
more often than bsg_release. Sending a newer version... The new fix
piggybacks on the bsg layer logic allocating/freeing bsg_device structs.
When all those structs are gone there are no references to Scsi_Host from
the user-mode side. The only remaining references are from a SCSI bus
driver (like qla2xxx) itself; it is safe to drop the module reference
at that time.