diff options
Diffstat (limited to 'drivers/ata/libata-core.c')
| -rw-r--r-- | drivers/ata/libata-core.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 915a55a6cc1..b896119cccd 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3119,6 +3119,13 @@ static void ata_dev_xfermask(struct ata_device *dev) */ if (ap->cbl == ATA_CBL_PATA40) xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); + /* Apply drive side cable rule. Unknown or 80 pin cables reported + * host side are checked drive side as well. Cases where we know a + * 40wire cable is used safely for 80 are not checked here. + */ + if (ata_drive_40wire(dev->id) && (ap->cbl == ATA_CBL_PATA_UNK || ap->cbl == ATA_CBL_PATA80)) + xfer_mask &= ~(0xF8 << ATA_SHIFT_UDMA); + xfer_mask &= ata_pack_xfermask(dev->pio_mask, dev->mwdma_mask, dev->udma_mask); |