| The following changes to ide-scsi.c are a recovery of the

| changes that I had in ide-scsi.c in the stock kernel's before
| Martin Dalecki's IDE tree was reverted and a few other changes.
| 
|         The principal change is that each ATAPI device is a Scsi_host
| (which reflects reality), instead of having one fake Scsi_Host with
| that appears to have all of the ATAPI devices on one bus regardless of
| actual hardware topology.  This way it is much easier for software to
| tell that, for example, a scsi copy command will not work between two
| ATAPI devices.  More importantly, hot plugging should theoretically
| work now, since Scsi_hosts are allocated and deallocated as ATAPI
| devices are added or removed. 
| 
|         This change eliminates the idescsi_drives[] array and the
| ide_driver_t.id field that was used to index it.
| 
|         The idescsi_scsi_t data structure is now allocated at
| the end of the struct Scsi_Host rather than being a separate
| memory allocation.  The calculation of various private pointers
| are changed slightly as a result.
| 
|         Other minor nits include making all global routines
| static and adding some missing error branches in
| init_idescsi_module.
| 
|         I've verified that I can at least read raw data
| from a DVD-ROM with with this change.
| 
|         When I unload this ide-scsi module, the stock ide-scsi module
| or the stock ide-cd modules in 2.5.56, I get what appears to be the
| same kernel bad memory reference, apparently due to some generic
| device device added to drivers/ide/ide.c.  It does not appear to
| be due to this patch.
| 
|         The patch is a net deletion of one line.
|