On Tue, 25 Sep 2018 at 19:59, Marcin Wojtas <[email protected]> wrote:
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1206
>
> Newly added XhcSetHsee() routine reads 4 bytes into
> a UINT16 variable causing issues on PCIE and NonDiscoverable
> Xhci controllers. Fix that.
>
> Cc: Ruiyu Ni <[email protected]>
> Cc: Fei1 Wang <[email protected]>
> Cc: Star Zeng <[email protected]>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Marcin Wojtas <[email protected]>
> ---
>  MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c 
> b/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c
> index 89f073e..dfe5f6c 100644
> --- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c
> +++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c
> @@ -607,7 +607,7 @@ XhcSetHsee (
>    PciIo = Xhc->PciIo;
>    Status = PciIo->Pci.Read (
>                          PciIo,
> -                        EfiPciIoWidthUint16,
> +                        EfiPciIoWidthUint8,
>                          PCI_COMMAND_OFFSET,
>                          sizeof (XhciCmd),
>                          &XhciCmd
> --
> 2.7.4
>

Well spotted! But I think a single read of 16 bits is more appropriate
here though.
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