pata_serverworks: fix PIO setup for the second channel

Signed-off-by: NBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/ata/pata_serverworks.c

 /*
  * pata_serverworks.c 	- Serverworks PATA for new ATA layer
  *			  (C) 2005 Red Hat Inc
+ *			  (C) 2010 Bartlomiej Zolnierkiewicz
  *
  * based upon
  *
@@ -253,7 +254,7 @@ static void serverworks_set_piomode(struct ata_port *ap, struct ata_device *adev
 	if (serverworks_is_csb(pdev)) {
 		pci_read_config_word(pdev, 0x4A, &csb5_pio);
 		csb5_pio &= ~(0x0F << devbits);
-		pci_write_config_byte(pdev, 0x4A, csb5_pio | (pio << devbits));
+		pci_write_config_word(pdev, 0x4A, csb5_pio | (pio << devbits));
 	}
 }