Current hangs on creation of acd devices

This was current of about a week ago. It hung on boot, creating devices 
for my ATA CD and DVD drives with repeated messages about a ATA timeout 
(sorry I don't remember the exact messages). I could only boot after 
physically unplugging the CD and DVD drives.

I noticed that 5.2.1 uses PIO4 for both devices but current tried to use 
UDMA. Any ideas whether the ATA drivers are in better shape now (if so, 
I'll take the plunge and try to get accurate error messages).

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