diff options
| author | Sergey Isakov <isakov-sl@bk.ru> | 2013-10-15 06:13:14 +0000 |
|---|---|---|
| committer | erictian <erictian@6f19259b-4bc3-4df7-8a09-765794883524> | 2013-10-15 06:13:14 +0000 |
| commit | 74b04490da9dcb90de61e31db51b8e137f9e6e3d (patch) | |
| tree | e02e1ff027699c9e54400bc3877c4df32226f39e /MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c | |
| parent | 6f05c02325fff475d695edacd0b0b003e5b1fcf3 (diff) | |
| download | edk2-platforms-74b04490da9dcb90de61e31db51b8e137f9e6e3d.tar.xz | |
MdeModulePkg/XhciDxe: Usb legacy support feature is optional. For those usb 3.0 devices which doesn’t support this feature, should directly return and not touch corresponding registers
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>
Signed-off-by: Tian, Feng <feng.tian@intel.com>
Reviewed-by: Li, Elvin <elvin.li@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14776 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c index 8debc4c18c..443df729d2 100644 --- a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c +++ b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.c @@ -164,7 +164,7 @@ XhcReset ( // Flow through, same behavior as Host Controller Reset // case EFI_USB_HC_RESET_HOST_CONTROLLER: - if (((XhcReadExtCapReg (Xhc, Xhc->DebugCapSupOffset) & 0xFF) == XHC_CAP_USB_DEBUG) && + if ((Xhc->DebugCapSupOffset != 0xFFFFFFFF) && ((XhcReadExtCapReg (Xhc, Xhc->DebugCapSupOffset) & 0xFF) == XHC_CAP_USB_DEBUG) && ((XhcReadExtCapReg (Xhc, Xhc->DebugCapSupOffset + XHC_DC_DCCTRL) & BIT0) != 0)) { Status = EFI_SUCCESS; goto ON_EXIT; |