diff options
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index c729e6988bbb..bce26ee3806e 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -610,6 +610,15 @@ module_param(ahci_em_messages, int, 0444); MODULE_PARM_DESC(ahci_em_messages, "Set AHCI Enclosure Management Message type (0 = disabled, 1 = LED"); +#if defined(CONFIG_PATA_MARVELL) || defined(CONFIG_PATA_MARVELL_MODULE) +static int marvell_enable; +#else +static int marvell_enable = 1; +#endif +module_param(marvell_enable, int, 0644); +MODULE_PARM_DESC(marvell_enable, "Marvell SATA via AHCI (1 = enabled)"); + + static inline int ahci_nr_ports(u32 cap) { return (cap & 0x1f) + 1; @@ -732,6 +741,8 @@ static void ahci_save_initial_config(struct pci_dev *pdev, "MV_AHCI HACK: port_map %x -> %x\n", port_map, port_map & mv); + dev_printk(KERN_ERR, &pdev->dev, + "Disabling your PATA port. Use the boot option 'ahci.marvell_enable=0' to avoid this.\n"); port_map &= mv; } @@ -2533,6 +2544,12 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (!printed_version++) dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); + /* The AHCI driver can only drive the SATA ports, the PATA driver + can drive them all so if both drivers are selected make sure + AHCI stays out of the way */ + if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable) + return -ENODEV; + /* acquire resources */ rc = pcim_enable_device(pdev); if (rc) |