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path: root/drivers/ata/pata_winbond.c
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Diffstat (limited to 'drivers/ata/pata_winbond.c')
-rw-r--r--drivers/ata/pata_winbond.c28
1 files changed, 16 insertions, 12 deletions
diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c
index 7116a9e7a8b2..7312e9182d69 100644
--- a/drivers/ata/pata_winbond.c
+++ b/drivers/ata/pata_winbond.c
@@ -92,29 +92,33 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
}
-static void winbond_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data)
+static void winbond_data_xfer(struct ata_device *dev, unsigned char *buf,
+ unsigned int buflen, int rw)
{
- struct ata_port *ap = adev->link->ap;
+ 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 (ata_id_has_dword_io(dev->id)) {
+ 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)) {
- __le32 pad = 0;
- if (write_data) {
- memcpy(&pad, buf + buflen - slop, slop);
- iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr);
- } else {
+ u32 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 winbond_sht = {