From c74805f1e7176ecf36d92280ae4c7efe71185f08 Mon Sep 17 00:00:00 2001 From: Ruiyu Ni Date: Mon, 15 Jan 2018 16:10:15 +0800 Subject: [PATCH] MdeModulePkg/EhciDxe: call EhcFreeUrb when int-transfer completes It didn't cause big issues when VT-d was disabled. But in VT-d enabled platform, lack of EhcFreeUrb call caused the DMA data was not moved back to user's buffer. It caused the correct data cannot be got through sync interrupt transfer. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni Reviewed-by: Star Zeng --- MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c index 5173a9d599..f18ee82261 100644 --- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c +++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c @@ -11,7 +11,7 @@ and companion host controller when UHCI or OHCI gets attached earlier than EHCI and a USB 2.0 device inserts. -Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.
This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -1220,6 +1220,7 @@ EhcSyncInterruptTransfer ( Status = EFI_SUCCESS; } + EhcFreeUrb (Ehc, Urb); ON_EXIT: Ehc->PciIo->Flush (Ehc->PciIo); gBS->RestoreTPL (OldTpl);