diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 5c1bd79..ef5b39f 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -331,15 +331,18 @@
 {
 	ide_hwif_t *hwif	= HWIF(drive);
 	unsigned long addr	= siimage_selreg(hwif, 0x1);
+	void __iomem *sata_error_addr
+		= (void __iomem *)hwif->sata_scr[SATA_ERROR_OFFSET];
 
-	if (SATA_ERROR_REG) {
+	if (sata_error_addr) {
 		unsigned long base = (unsigned long)hwif->hwif_data;
-
 		u32 ext_stat = readl((void __iomem *)(base + 0x10));
 		u8 watchdog = 0;
+
 		if (ext_stat & ((hwif->channel) ? 0x40 : 0x10)) {
-			u32 sata_error = readl((void __iomem *)SATA_ERROR_REG);
-			writel(sata_error, (void __iomem *)SATA_ERROR_REG);
+			u32 sata_error = readl(sata_error_addr);
+
+			writel(sata_error, sata_error_addr);
 			watchdog = (sata_error & 0x00680000) ? 1 : 0;
 			printk(KERN_WARNING "%s: sata_error = 0x%08x, "
 				"watchdog = %d, %s\n",
@@ -418,13 +421,17 @@
 
 static int sil_sata_reset_poll(ide_drive_t *drive)
 {
-	if (SATA_STATUS_REG) {
-		ide_hwif_t *hwif	= HWIF(drive);
+	ide_hwif_t *hwif = drive->hwif;
+	void __iomem *sata_status_addr
+		= (void __iomem *)hwif->sata_scr[SATA_STATUS_OFFSET];
 
-		/* SATA_STATUS_REG is valid only when in MMIO mode */
-		if ((readl((void __iomem *)SATA_STATUS_REG) & 0x03) != 0x03) {
+	if (sata_status_addr) {
+		/* SATA Status is available only when in MMIO mode */
+		u32 sata_stat = readl(sata_status_addr);
+
+		if ((sata_stat & 0x03) != 0x03) {
 			printk(KERN_WARNING "%s: reset phy dead, status=0x%08x\n",
-				hwif->name, readl((void __iomem *)SATA_STATUS_REG));
+					    hwif->name, sata_stat);
 			HWGROUP(drive)->polling = 0;
 			return ide_started;
 		}