1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index 4224cfccedef..342aaaaf3832 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -461,24 +461,25 @@ static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
 {
         struct ata_port *ap = qc->ap;
         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-        u8 dma_stat = ioread8(ap->ioaddr.bmdma_addr + 2);
-        u8 dma_cmd;
         void __iomem *bmdma = ap->ioaddr.bmdma_addr;
+        u8 dma_stat = ioread8(bmdma + ATA_DMA_STATUS);
+        u8 dma_cmd;
 
-        if (dma_stat & 0x01) {
+        if (dma_stat & ATA_DMA_ACTIVE) {
                 udelay(20);
-                dma_stat = ioread8(bmdma + 2);
+                dma_stat = ioread8(bmdma + ATA_DMA_STATUS);
         }
-        if (dma_stat & 0x01) {
+        if (dma_stat & ATA_DMA_ACTIVE) {
                 /* Clear the engine */
                 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
                 udelay(10);
                 /* Stop DMA */
-                dma_cmd = ioread8(bmdma );
-                iowrite8(dma_cmd & 0xFE, bmdma);
+                dma_cmd = ioread8(bmdma + ATA_DMA_CMD);
+                iowrite8(dma_cmd & ~ATA_DMA_START, bmdma + ATA_DMA_CMD);
                 /* Clear Error */
-                dma_stat = ioread8(bmdma + 2);
-                iowrite8(dma_stat | 0x06 , bmdma + 2);
+                dma_stat = ioread8(bmdma + ATA_DMA_STATUS);
+                iowrite8(dma_stat | ATA_DMA_INTR | ATA_DMA_ERR,
+                         bmdma + ATA_DMA_STATUS);
                 /* Clear the engine */
                 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
                 udelay(10);