提交 5e518810 编写于 作者: A Alan Cox 提交者: Jeff Garzik

pata_pdc202xx_old: LBA48 bug

In LBA48 mode we have to help the controller to get anything to work. The
chip provides a register giving word counts meant for ATAPI use which we
can use. However we need to load the count in words not bytes..
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
上级 8c3c52a8
......@@ -195,7 +195,7 @@ static void pdc2026x_bmdma_start(struct ata_queued_cmd *qc)
/* Cases the state machine will not complete correctly without help */
if ((tf->flags & ATA_TFLAG_LBA48) || tf->protocol == ATA_PROT_ATAPI_DMA)
{
len = qc->nbytes;
len = qc->nbytes / 2;
if (tf->flags & ATA_TFLAG_WRITE)
len |= 0x06000000;
......
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