diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index f8b3ffc8ae9e..392116c1c16a 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -39,9 +39,11 @@
 #define RB500_CF_MAXPORTS	1
 #define RB500_CF_IO_DELAY	400
 
-#define RB500_CF_REG_CMD	0x0800
+#define RB500_CF_REG_BASE	0x0800
+#define RB500_CF_REG_ERR	0x080D
 #define RB500_CF_REG_CTRL	0x080E
-#define RB500_CF_REG_DATA	0x0C00
+/* 32bit buffered data register offset */
+#define RB500_CF_REG_DBUF32	0x0C00
 
 struct rb532_cf_info {
 	void __iomem	*iobase;
@@ -146,13 +148,14 @@ static void rb532_pata_setup_ports(struct ata_host *ah)
 	ap->pio_mask	= 0x1f; /* PIO4 */
 	ap->flags	= ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO;
 
-	ap->ioaddr.cmd_addr	= info->iobase + RB500_CF_REG_CMD;
+	ap->ioaddr.cmd_addr	= info->iobase + RB500_CF_REG_BASE;
 	ap->ioaddr.ctl_addr	= info->iobase + RB500_CF_REG_CTRL;
 	ap->ioaddr.altstatus_addr = info->iobase + RB500_CF_REG_CTRL;
 
 	ata_sff_std_ports(&ap->ioaddr);
 
-	ap->ioaddr.data_addr	= info->iobase + RB500_CF_REG_DATA;
+	ap->ioaddr.data_addr	= info->iobase + RB500_CF_REG_DBUF32;
+	ap->ioaddr.error_addr	= info->iobase + RB500_CF_REG_ERR;
 }
 
 static __devinit int rb532_pata_driver_probe(struct platform_device *pdev)