diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c index dc36945962..7cbc9a8502 100644 --- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c +++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c @@ -298,10 +298,15 @@ XhcCreateTransferTrb ( TrbStart->TrbCtrSetup.IOC = 1;
TrbStart->TrbCtrSetup.IDT = 1;
TrbStart->TrbCtrSetup.Type = TRB_TYPE_SETUP_STAGE;
- if (Urb->Ep.Direction == EfiUsbDataIn) {
- TrbStart->TrbCtrSetup.TRT = 3;
- } else if (Urb->Ep.Direction == EfiUsbDataOut) {
- TrbStart->TrbCtrSetup.TRT = 2;
+ if (Urb->DataLen > 0) {
+ if (Urb->Ep.Direction == EfiUsbDataIn) {
+ TrbStart->TrbCtrSetup.TRT = 3;
+ } else if (Urb->Ep.Direction == EfiUsbDataOut) {
+ TrbStart->TrbCtrSetup.TRT = 2;
+ } else {
+ DEBUG ((DEBUG_ERROR, "XhcCreateTransferTrb: Direction sholud be IN or OUT when Data exists!\n"));
+ ASSERT (FALSE);
+ }
} else {
TrbStart->TrbCtrSetup.TRT = 0;
}
|