This reverts commit 
5946fdaee4ba449e8fbb5d403e1ed69437f916e8.
The original commit's assumption that the secondary port is
unconnected turns out to be false.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Markku Pesonen <tourula@gmail.com>
Fixes: 5946fdaee4ba ("pata_atiixp: Don't use unconnected secondary port on SB600/SB700")
Cc: Darren Stevens <darren@stevens-zone.net>
 
        };
        const struct ata_port_info *ppi[] = { &info, &info };
 
-       /* SB600/700 don't have secondary port wired */
-       if ((pdev->device == PCI_DEVICE_ID_ATI_IXP600_IDE) ||
-               (pdev->device == PCI_DEVICE_ID_ATI_IXP700_IDE))
-               ppi[1] = &ata_dummy_port_info;
-
        return ata_pci_bmdma_init_one(pdev, ppi, &atiixp_sht, NULL,
                                      ATA_HOST_PARALLEL_SCAN);
 }