diff options
Diffstat (limited to 'kernel/drivers/usb/core/hcd-pci.c')
| -rw-r--r-- | kernel/drivers/usb/core/hcd-pci.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/drivers/usb/core/hcd-pci.c b/kernel/drivers/usb/core/hcd-pci.c index 9eb1cff28..40378487e 100644 --- a/kernel/drivers/usb/core/hcd-pci.c +++ b/kernel/drivers/usb/core/hcd-pci.c @@ -74,6 +74,15 @@ static void for_each_companion(struct pci_dev *pdev, struct usb_hcd *hcd, if (companion->bus != pdev->bus || PCI_SLOT(companion->devfn) != slot) continue; + + /* + * Companion device should be either UHCI,OHCI or EHCI host + * controller, otherwise skip. + */ + if (companion->class != CL_UHCI && companion->class != CL_OHCI && + companion->class != CL_EHCI) + continue; + companion_hcd = pci_get_drvdata(companion); if (!companion_hcd || !companion_hcd->self.root_hub) continue; @@ -197,7 +206,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) * The xHCI driver has its own irq management * make sure irq setup is not touched for xhci in generic hcd code */ - if ((driver->flags & HCD_MASK) != HCD_USB3) { + if ((driver->flags & HCD_MASK) < HCD_USB3) { if (!dev->irq) { dev_err(&dev->dev, "Found HC with no IRQ. Check BIOS/PCI %s setup!\n", |