diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 7732d69e49e0..32dada8c8b4f 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -825,9 +825,13 @@ static void __devinit quirk_usb_handoff_xhci(struct pci_dev *pdev) } } - /* Disable any BIOS SMIs */ - writel(XHCI_LEGACY_DISABLE_SMI, - base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); + val = readl(base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); + /* Mask off (turn off) any enabled SMIs */ + val &= XHCI_LEGACY_DISABLE_SMI; + /* Mask all SMI events bits, RW1C */ + val |= XHCI_LEGACY_SMI_EVENTS; + /* Disable any BIOS SMIs and clear all SMI events*/ + writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); if (usb_is_intel_switchable_xhci(pdev)) usb_enable_xhci_ports(pdev); @@ -893,4 +897,5 @@ static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev) quirk_usb_handoff_xhci(pdev); pci_disable_device(pdev); } -DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff); +DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID, + PCI_CLASS_SERIAL_USB, 8, quirk_usb_early_handoff); |