NetBSD master CVS tree commits

[The Source of All Evil <source%NetBSD.ORG@localhost>]

mjacob
Fri Jul  3 12:11:26 PDT 1998
Update of /cvsroot/src/sys/dev/scsipi
In directory nb00:/tmp/cvs-serv29128

Modified Files:
        ch.c 
Log Message:
kern/5514: take the submitter's advice, at least partially. The time it
takes to do IELEM can be proportional to the number of elements, but is
also affected by wierd things like how readable the barcodes on the
media are. There are worst case scenarios I've seen where there are
white labels on the back of tapes with pencilled in labels which is
*just* close enough to being a bar code that an Exabyte 120 would
peer at them myopically and long enough for a *really* long time to
pass in inventorying the jukebox.

I've upped the limit to be proportional to 5 minutes per element. That
is long enough that someone I'm sure will complain about "you wait
to long and should time out" for broken h/w.

As is also noted in the PR, there are a lot of other issues here. It's
really also a question as to whether to update this driver or go
with CAM's driver. This one doesn't have switching between block
descriptors and not, doesn't support volume tag setting, and so on.
Time is limited. This PR should have been closed and fixed right away,
tho.