diff options
Diffstat (limited to 'drivers/usb/core/hcd-pci.c')
| -rw-r--r-- | drivers/usb/core/hcd-pci.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 622b4a48e732..2b487d4797bd 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -173,6 +173,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) struct hc_driver *driver; struct usb_hcd *hcd; int retval; + int hcd_irq = 0; if (usb_disabled()) return -ENODEV; @@ -187,15 +188,19 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) return -ENODEV; dev->current_state = PCI_D0; - /* The xHCI driver supports MSI and MSI-X, - * so don't fail if the BIOS doesn't provide a legacy IRQ. + /* + * The xHCI driver has its own irq management + * make sure irq setup is not touched for xhci in generic hcd code */ - if (!dev->irq && (driver->flags & HCD_MASK) != HCD_USB3) { - dev_err(&dev->dev, - "Found HC with no IRQ. Check BIOS/PCI %s setup!\n", - pci_name(dev)); - retval = -ENODEV; - goto disable_pci; + 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", + pci_name(dev)); + retval = -ENODEV; + goto disable_pci; + } + hcd_irq = dev->irq; } hcd = usb_create_hcd(driver, &dev->dev, pci_name(dev)); @@ -245,7 +250,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) pci_set_master(dev); - retval = usb_add_hcd(hcd, dev->irq, IRQF_SHARED); + retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED); if (retval != 0) goto unmap_registers; set_hs_companion(dev, hcd); |