[libata] pata_rb532_cf: fix and rename register definitions

The original standalone driver uses a custom address for the error
register. Use it in pata_rb532_cf, too.

Rename two register definitions:
- The address offset 0x0800 in fact is the ATA base, not ATA command
  address.
- The offset 0x0C00 is not a regular ATA data address, but a buffered one
  allowing 4-byte IO.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 7 insertions, 4 deletions

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)