Commit ff04715b authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

pata_via: clean up recent tf_load changes

Commit bfce5e01

 implemented custom
tf_load for pata_via.  This patch cleans it up a bit.

* Instead of duplicating whole body, copy tf and set ATA_TFLAG_DEVICE
  when necessary.

* Rename via_ata_tf_load() to via_tf_load().

* No need to set .tf_load in via_port_ops_noirq as it inherits from

* Clean up indentation.

Signed-off-by: default avatarTejun Heo <>
Cc: Joseph Chan <>
Signed-off-by: default avatarJeff Garzik <>
parent d127ea7b
......@@ -324,62 +324,26 @@ static void via_set_dmamode(struct ata_port *ap, struct ata_device *adev)
* via_ata_sff_tf_load - send taskfile registers to host controller
* via_tf_load - send taskfile registers to host controller
* @ap: Port to which output is sent
* @tf: ATA taskfile register set
* Outputs ATA taskfile to standard ATA host controller.
* Note: This is to fix the internal bug of via chipsets, which
* will reset the device register after changing the IEN bit on
* ctl register
* will reset the device register after changing the IEN bit on
* ctl register
static void via_ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
static void via_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
struct ata_ioports *ioaddr = &ap->ioaddr;
unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
if (tf->ctl != ap->last_ctl) {
iowrite8(tf->ctl, ioaddr->ctl_addr);
iowrite8(tf->device, ioaddr->device_addr);
ap->last_ctl = tf->ctl;
if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
iowrite8(tf->hob_feature, ioaddr->feature_addr);
iowrite8(tf->hob_nsect, ioaddr->nsect_addr);
iowrite8(tf->hob_lbal, ioaddr->lbal_addr);
iowrite8(tf->hob_lbam, ioaddr->lbam_addr);
iowrite8(tf->hob_lbah, ioaddr->lbah_addr);
VPRINTK("hob: feat 0x%X nsect 0x%X, lba 0x%X 0x%X 0x%X\n",
struct ata_taskfile tmp_tf;
if (is_addr) {
iowrite8(tf->feature, ioaddr->feature_addr);
iowrite8(tf->nsect, ioaddr->nsect_addr);
iowrite8(tf->lbal, ioaddr->lbal_addr);
iowrite8(tf->lbam, ioaddr->lbam_addr);
iowrite8(tf->lbah, ioaddr->lbah_addr);
VPRINTK("feat 0x%X nsect 0x%X lba 0x%X 0x%X 0x%X\n",
if (ap->ctl != ap->last_ctl && !(tf->flags & ATA_TFLAG_DEVICE)) {
tmp_tf = *tf;
tmp_tf.flags |= ATA_TFLAG_DEVICE;
tf = &tmp_tf;
if (tf->flags & ATA_TFLAG_DEVICE) {
iowrite8(tf->device, ioaddr->device_addr);
VPRINTK("device 0x%X\n", tf->device);
ata_sff_tf_load(ap, tf);
static struct scsi_host_template via_sht = {
......@@ -392,13 +356,12 @@ static struct ata_port_operations via_port_ops = {
.set_piomode = via_set_piomode,
.set_dmamode = via_set_dmamode,
.prereset = via_pre_reset,
.sff_tf_load = via_ata_tf_load,
.sff_tf_load = via_tf_load,
static struct ata_port_operations via_port_ops_noirq = {
.inherits = &via_port_ops,
.sff_data_xfer = ata_sff_data_xfer_noirq,
.sff_tf_load = via_ata_tf_load,
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