[PATCH] libata: Note a nasty ATA quirk
Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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@ -1129,6 +1129,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
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* length 0 means transfer 0 block of data.
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* However, for ATA R/W commands, sector count 0 means
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* 256 or 65536 sectors, not 0 sectors as in SCSI.
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*
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* WARNING: one or two older ATA drives treat 0 as 0...
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*/
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goto nothing_to_do;
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