Hi, all.

I've seen a couple of mails telling about the probelem with
some via chipsets and atapa floppy disks.
I experienced the same problem lately and decided to investigate this
matter a bit.

The problem symtops were ide bus lockup and the following messages:
hdd: lost interrupt 
ide-floppy: CoD != 0 in idefloppy_pc_intr 
hdd: ATAPI reset complete 

After extensive tracing the look seemed to change from 100% sure
to random ones and they only followed after a large write packet
command. I decided to try a small delay before every command
(the hardware might busy after the write and ignoring new requests).
This seemed to cure my atapi zip floppy.

I'm not a kernel or an ide expert, but I created a little patch
which works on my system quite stably. Any feedback on the solution
appreciated: eg. if it works for others or not and is the chipset
stuff I added okay. Also I'm not sure which versions of the via
chipset are the buggy ones so it enables the workaround whenever
a via chipset is found.

Regards,
  Timo Teräs

PS. Please send mails directly or Cc me, since I haven't subscribed
to this list.