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MdeModulePkg: XhciDxe: Prevent illegal memory access in XhcSetHsee

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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 <ruiyu.ni@intel.com>
Cc: Fei1 Wang <fei1.wang@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Marcin Wojtas 2018-09-26 05:57:51 +08:00 committed by Star Zeng
parent 3cb0a311cb
commit e5cd809087
1 changed files with 1 additions and 1 deletions
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2
MdeModulePkg/Bus/Pci/XhciDxe/XhciReg.c
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@ -609,7 +609,7 @@ XhcSetHsee (
PciIo,
EfiPciIoWidthUint16,
PCI_COMMAND_OFFSET,
sizeof (XhciCmd),
sizeof (XhciCmd) / sizeof (UINT16),
&XhciCmd
);
if (!EFI_ERROR (Status)) {