1 files changed, 10 insertions, 5 deletions

diff --git a/drivers/ata/pata_atiixp.c b/drivers/ata/pata_atiixp.c
index 86f85a2cab7e..9623f5295530 100644
--- a/drivers/ata/pata_atiixp.c
+++ b/drivers/ata/pata_atiixp.c
@@ -33,8 +33,9 @@ enum {
         ATIIXP_IDE_UDMA_MODE    = 0x56
 };
 
-static int atiixp_pre_reset(struct ata_port *ap, unsigned long deadline)
+static int atiixp_pre_reset(struct ata_link *link, unsigned long deadline)
 {
+        struct ata_port *ap = link->ap;
         static const struct pci_bits atiixp_enable_bits[] = {
                 { 0x48, 1, 0x01, 0x00 },
                 { 0x48, 1, 0x08, 0x00 }
@@ -44,7 +45,7 @@ static int atiixp_pre_reset(struct ata_port *ap, unsigned long deadline)
         if (!pci_test_config_bits(pdev, &atiixp_enable_bits[ap->port_no]))
                 return -ENOENT;
 
-        return ata_std_prereset(ap, deadline);
+        return ata_std_prereset(link, deadline);
 }
 
 static void atiixp_error_handler(struct ata_port *ap)
@@ -172,6 +173,9 @@ static void atiixp_set_dmamode(struct ata_port *ap, struct ata_device *adev)
  *
  *      When DMA begins we need to ensure that the UDMA control
  *      register for the channel is correctly set.
+ *
+ *      Note: The host lock held by the libata layer protects
+ *      us from two channels both trying to set DMA bits at once
  */
 
 static void atiixp_bmdma_start(struct ata_queued_cmd *qc)
@@ -198,6 +202,9 @@ static void atiixp_bmdma_start(struct ata_queued_cmd *qc)
  *
  *      DMA has completed. Clear the UDMA flag as the next operations will
  *      be PIO ones not UDMA data transfer.
+ *
+ *      Note: The host lock held by the libata layer protects
+ *      us from two channels both trying to set DMA bits at once
  */
 
 static void atiixp_bmdma_stop(struct ata_queued_cmd *qc)
@@ -232,7 +239,6 @@ static struct scsi_host_template atiixp_sht = {
 };
 
 static struct ata_port_operations atiixp_port_ops = {
-        .port_disable   = ata_port_disable,
         .set_piomode    = atiixp_set_piomode,
         .set_dmamode    = atiixp_set_dmamode,
         .mode_filter    = ata_pci_default_filter,
@@ -261,9 +267,8 @@ static struct ata_port_operations atiixp_port_ops = {
         .irq_handler    = ata_interrupt,
         .irq_clear      = ata_bmdma_irq_clear,
         .irq_on         = ata_irq_on,
-        .irq_ack        = ata_irq_ack,
 
-        .port_start     = ata_port_start,
+        .port_start     = ata_sff_port_start,
 };
 
 static int atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id)