Reviewed-by: jiewen@intel.com
> -Original Message-
> From: Zeng, Star
> Sent: Tuesday, November 21, 2017 5:04 PM
> To: edk2-devel@lists.01.org
> Cc: Zeng, Star ; Yao, Jiewen
> Subject: [PATCH] MdeModulePkg EhciPei: Minor refinement about IOMMU
>
> This patch is following 2c656af04d7f.
> 1. Fix typo "XHC" to "EHC".
> 2. Reinitialize Request(Phy/Map) and Data(Phy/Map)
> in Urb, otherwise the last time value of them may
> be used in error handling when error happens.
>
> Cc: Jiewen Yao
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Star Zeng
> ---
> MdeModulePkg/Bus/Pci/EhciPei/EhcPeim.h | 2 +-
> MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c | 13 ++---
> 2 files changed, 7 insertions(+), 8 deletions(-)
>
> diff --git a/MdeModulePkg/Bus/Pci/EhciPei/EhcPeim.h
> b/MdeModulePkg/Bus/Pci/EhciPei/EhcPeim.h
> index 279407475b66..715a5ab1c142 100644
> --- a/MdeModulePkg/Bus/Pci/EhciPei/EhcPeim.h
> +++ b/MdeModulePkg/Bus/Pci/EhciPei/EhcPeim.h
> @@ -99,7 +99,7 @@ struct _PEI_USB2_HC_DEV {
>EDKII_IOMMU_PPI *IoMmu;
>EFI_PEI_PPI_DESCRIPTOR PpiDescriptor;
>//
> - // EndOfPei callback is used to stop the XHC DMA operation
> + // EndOfPei callback is used to stop the EHC DMA operation
>// after exit PEI phase.
>//
>EFI_PEI_NOTIFY_DESCRIPTOR EndOfPeiNotifyList;
> diff --git a/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c
> b/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c
> index 3dadcd60b6fe..baacf5d56080 100644
> --- a/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c
> +++ b/MdeModulePkg/Bus/Pci/EhciPei/EhciUrb.c
> @@ -576,7 +576,12 @@ EhcCreateUrb (
>if (Urb->Qh == NULL) {
> goto ON_ERROR;
>}
> -
> +
> + Urb->RequestPhy = NULL;
> + Urb->RequestMap = NULL;
> + Urb->DataPhy = NULL;
> + Urb->DataMap = NULL;
> +
>//
>// Map the request and user data
>//
> @@ -591,9 +596,6 @@ EhcCreateUrb (
>
> Urb->RequestPhy = (VOID *) ((UINTN) PhyAddr);
> Urb->RequestMap = Map;
> - } else {
> -Urb->RequestPhy = NULL;
> -Urb->RequestMap = NULL;
>}
>
>if (Data != NULL) {
> @@ -613,9 +615,6 @@ EhcCreateUrb (
>
> Urb->DataPhy = (VOID *) ((UINTN) PhyAddr);
> Urb->DataMap = Map;
> - } else {
> -Urb->DataPhy = NULL;
> -Urb->DataMap = NULL;
>}
>
>Status = EhcCreateQtds (Ehc, Urb);
> --
> 2.7.0.windows.1
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