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pata_atiixp: Don't use unconnected secondary port on SB600/SB700

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The SB600 and SB700 southbridge chips from ATI/AMD only have
connections for the primary IDE port. As these chips have unique
pci device ID's use these to mark the secondary port as 'dummy'

Signed-off-by: Darren Stevens <darren@stevens-zone.net>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Darren Stevens 2017-01-23 14:38:28 -05:00 committed by Tejun Heo
parent 589d572671
commit 5946fdaee4
1 changed files with 5 additions and 0 deletions
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5
drivers/ata/pata_atiixp.c
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@ -278,6 +278,11 @@ static int atiixp_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
};
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);
}