diff options
Diffstat (limited to 'drivers/ata/pata_qdi.c')
-rw-r--r-- | drivers/ata/pata_qdi.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c index 7d4c696c4cb6..9f308ed76cc8 100644 --- a/drivers/ata/pata_qdi.c +++ b/drivers/ata/pata_qdi.c @@ -124,31 +124,33 @@ static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc) return ata_qc_issue_prot(qc); } -static void qdi_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) +static unsigned int qdi_data_xfer(struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; - int slop = buflen & 3; + if (ata_id_has_dword_io(dev->id)) { + struct ata_port *ap = dev->link->ap; + int slop = buflen & 3; - if (ata_id_has_dword_io(adev->id)) { - if (write_data) - iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); - else + if (rw == READ) ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); + else + iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { u32 pad; - if (write_data) { - memcpy(&pad, buf + buflen - slop, slop); - pad = le32_to_cpu(pad); - iowrite32(pad, ap->ioaddr.data_addr); - } else { - pad = ioread32(ap->ioaddr.data_addr); - pad = cpu_to_le32(pad); + if (rw == READ) { + pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); + } else { + memcpy(&pad, buf + buflen - slop, slop); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } + buflen += 4 - slop; } } else - ata_data_xfer(adev, buf, buflen, write_data); + buflen = ata_data_xfer(dev, buf, buflen, rw); + + return buflen; } static struct scsi_host_template qdi_sht = { |