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libata: cable logic

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The cable detect isolation patch inadvertently removed 40 wire short
cable handling. Put it back

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Alan Cox 2008-04-08 16:37:50 +01:00 • committed by Jeff Garzik
parent 45db2f6c95
commit f792068e43
1 changed files with 4 additions and 0 deletions
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4
drivers/ata/libata-core.c
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@ -4033,6 +4033,10 @@ static int cable_is_40wire(struct ata_port *ap)
/* If the controller thinks we are 80 wire, we are */ /* If the controller thinks we are 80 wire, we are */
if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA) if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA)
return 0; return 0;
/* If the system is known to be 40 wire short cable (eg laptop),
then we allow 80 wire modes even if the drive isn't sure */
if (ap->cbl == ATA_CBL_PATA40_SHORT)
return 0;
/* If the controller doesn't know we scan /* If the controller doesn't know we scan
- Note: We look for all 40 wire detects at this point. - Note: We look for all 40 wire detects at this point.