WD_QUIRK_FORCE_LBA48

To: tech-kern%netbsd.org@localhost
Subject: WD_QUIRK_FORCE_LBA48
From: David Laight <david%l8s.co.uk@localhost>
Date: Sat, 5 Dec 2009 15:06:50 +0000

The 'wd' (aka ATA disk) driver has a load of code for the
WD_QUIRK_FORCE_LBA48 quirk.

This forces LBA48 transfers for an ever increasing number of disks.

My suspicion is that the problems only relate to transfers that
actually cross the LBA48 boundary.

So quite possibly checking:
        wd->sc_wdc_bio.blkno + nblks > LBA48_THRESHOLD
would remove the need for the quirk.

        David

-- 
David Laight: david%l8s.co.uk@localhost

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