diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c index 77aba643ab..c141803c38 100644 --- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c +++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c @@ -469,9 +469,12 @@ EhcSetRootHubPortFeature ( case EfiUsbPortPower:
//
- // Not supported, ignore the operation
+ // Set port power bit when PPC is 1
//
- Status = EFI_SUCCESS;
+ if ((Ehc->HcCapParams & HCSP_PPC) == HCSP_PPC) {
+ State |= PORTSC_POWER;
+ EhcWriteOpReg (Ehc, Offset, State);
+ }
break;
case EfiUsbPortOwner:
@@ -598,6 +601,14 @@ EhcClearRootHubPortFeature ( break;
case EfiUsbPortPower:
+ //
+ // Clear port power bit when PPC is 1
+ //
+ if ((Ehc->HcCapParams & HCSP_PPC) == HCSP_PPC) {
+ State &= ~PORTSC_POWER;
+ EhcWriteOpReg (Ehc, Offset, State);
+ }
+ break;
case EfiUsbPortSuspendChange:
case EfiUsbPortResetChange:
//
|