diff options
Diffstat (limited to 'drivers/scsi/aic7xxx/aic7xxx_osm_pci.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic7xxx_osm_pci.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c index 9d318ce2c993..0d44a6907dd2 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c +++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c @@ -149,6 +149,27 @@ ahc_linux_pci_dev_remove(struct pci_dev *pdev) ahc_free(ahc); } +static void +ahc_linux_pci_inherit_flags(struct ahc_softc *ahc) +{ + struct pci_dev *pdev = ahc->dev_softc, *master_pdev; + unsigned int master_devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0); + + master_pdev = pci_get_slot(pdev->bus, master_devfn); + if (master_pdev) { + struct ahc_softc *master = pci_get_drvdata(master_pdev); + if (master) { + ahc->flags &= ~AHC_BIOS_ENABLED; + ahc->flags |= master->flags & AHC_BIOS_ENABLED; + + ahc->flags &= ~AHC_PRIMARY_CHANNEL; + ahc->flags |= master->flags & AHC_PRIMARY_CHANNEL; + } else + printk(KERN_ERR "aic7xxx: no multichannel peer found!\n"); + pci_dev_put(master_pdev); + } +} + static int ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -203,6 +224,14 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent) ahc_free(ahc); return (-error); } + + /* + * Second Function PCI devices need to inherit some + * settings from function 0. + */ + if ((ahc->features & AHC_MULTI_FUNC) && PCI_FUNC(pdev->devfn) != 0) + ahc_linux_pci_inherit_flags(ahc); + pci_set_drvdata(pdev, ahc); ahc_linux_register_host(ahc, &aic7xxx_driver_template); return (0); |