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| author | Clark Williams <williams@redhat.com> | 2012-04-15 23:24:46 -0500 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-15 23:24:46 -0500 |
| commit | 8e9c931b8e4150f3c5aaab7e4639cd507c30477c (patch) | |
| tree | 4c77bef833db938a950c60095f628acc1ebff50a /drivers/usb/host/pci-quirks.c | |
| parent | 3524a83e5459ae4ba42f9bf098bb736b99b88695 (diff) | |
| parent | e816b57a337ea3b755de72bec38c10c864f23015 (diff) | |
Merge commit 'v3.4-rc3' into rt-3.4-rc3-rt4v3.4-rc3-rt4
Diffstat (limited to 'drivers/usb/host/pci-quirks.c')
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index 11de5f1be981..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); |