diff options
Diffstat (limited to 'drivers/scsi/libata-core.c')
| -rw-r--r-- | drivers/scsi/libata-core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index b42acbe0e9a..e6044455ca4 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -611,6 +611,10 @@ int ata_rwcmd_protocol(struct ata_queued_cmd *qc) if (dev->flags & ATA_DFLAG_PIO) { tf->protocol = ATA_PROT_PIO; index = dev->multi_count ? 0 : 8; + } else if (lba48 && (qc->ap->flags & ATA_FLAG_PIO_LBA48)) { + /* Unable to use DMA due to host limitation */ + tf->protocol = ATA_PROT_PIO; + index = dev->multi_count ? 0 : 4; } else { tf->protocol = ATA_PROT_DMA; index = 16; |