Alan Cox wrote:
(2) The more common method is for the drive to require an explicit
set-features "spin-up" subcommand after the IDENTIFY.
I notice there is no ATA version check - was this feature in all versions
of ATA ?
No, the feature was not in early versions.
But it is not entirely clear to me that the version information
is actually guaranteed to be present in all cases before the
drive has spun-up.
Instead, the standards seem to be relying upon detection of
the "power up in standby" signature values.
The signature word (2) has been "reserved" from ATA1 onward,
and the only assigned uses thus far are for the specific signatures
that this patch looks for.
Cheers
-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
