diff options
Diffstat (limited to 'drivers/usb/host/xhci-pci.c')
| -rw-r--r-- | drivers/usb/host/xhci-pci.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index cc24e39b97d5..475e06e10a77 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -250,13 +250,15 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) * writers. * * Unconditionally switch the ports back to xHCI after a system resume. - * We can't tell whether the EHCI or xHCI controller will be resumed - * first, so we have to do the port switchover in both drivers. Writing - * a '1' to the port switchover registers should have no effect if the - * port was already switched over. + * It should not matter whether the EHCI or xHCI controller is + * resumed first. It's enough to do the switchover in xHCI because + * USB core won't notice anything as the hub driver doesn't start + * running again until after all the devices (including both EHCI and + * xHCI host controllers) have been resumed. */ - if (usb_is_intel_switchable_xhci(pdev)) - usb_enable_xhci_ports(pdev); + + if (pdev->vendor == PCI_VENDOR_ID_INTEL) + usb_enable_intel_xhci_ports(pdev); retval = xhci_resume(xhci, hibernated); return retval; |