->prereset() returns -ENOENT to tell libata that the port is empty and
reset sequencing should be stopped. This is not an error condition.
Update ata_eh_reset() such that it sets device classes to ATA_DEV_NONE
and return success in on -ENOENT. This makes spurious error message
go away.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
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This should do it and better fits the intention of the return value.
Two things to note.
1. I think these ports should be made dummy instead of returning
-ENOENT on prereset(). -ENOENT from prereset() was a hack to keep
ata_piix's behavior unchanged while converting it to new EH. If no
one objcts, I'll convert similar usages to use dummy ports after new
init model and drop -ENOENT hack in #upstream.
2. -ENODEV sounds more appropriate. Why have I used -ENOENT. :-)