1 files changed, 13 insertions, 2 deletions

diff --git a/drivers/ata/pata_pdc202xx_old.c b/drivers/ata/pata_pdc202xx_old.c
index bc7c2d5d8d5e..8f2815601791 100644
--- a/drivers/ata/pata_pdc202xx_old.c
+++ b/drivers/ata/pata_pdc202xx_old.c
@@ -215,8 +215,8 @@ static void pdc2026x_bmdma_stop(struct ata_queued_cmd *qc)
         /* Flip back to 33Mhz for PIO */
         if (adev->dma_mode >= XFER_UDMA_2)
                 iowrite8(ioread8(clock) & ~sel66, clock);
-
         ata_bmdma_stop(qc);
+        pdc202xx_set_piomode(ap, adev);
 }
 
 /**
@@ -233,6 +233,17 @@ static void pdc2026x_dev_config(struct ata_device *adev)
         adev->max_sectors = 256;
 }
 
+static int pdc2026x_port_start(struct ata_port *ap)
+{
+        void __iomem *bmdma = ap->ioaddr.bmdma_addr;
+        if (bmdma) {
+                /* Enable burst mode */
+                u8 burst = ioread8(bmdma + 0x1f);
+                iowrite8(burst | 0x01, bmdma + 0x1f);
+        }
+        return ata_sff_port_start(ap);
+}
+
 static struct scsi_host_template pdc202xx_sht = {
         .module                 = THIS_MODULE,
         .name                   = DRV_NAME,
@@ -313,7 +324,7 @@ static struct ata_port_operations pdc2026x_port_ops = {
         .irq_clear      = ata_bmdma_irq_clear,
         .irq_on         = ata_irq_on,
 
-        .port_start     = ata_sff_port_start,
+        .port_start     = pdc2026x_port_start,
 };
 
 static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id)