Robert Hancock wrote:
..
This has come up before:
http://marc.info/?l=linux-ide&m=123064513313466&w=2
I think this timeout should not even exist. libata has no such timeout
(only the overall command completion timeout), and I can't find any
reference in current ATA specs to the device being required to raise DRQ
in any particular amount of time.
..
The reason for the original (20ms, then 50ms) timeout was this text
from the ATA1 specification, long since outdated:
- Upon receipt of a Class 3 command, the drive sets BSY within 400 nsec,
sets up the sector buffer for a write operation, sets DRQ within 20
msec, and clears BSY within 400 nsec of setting DRQ.
Cheers
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