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SourceLevelDebugPkg DebugUsb3: Check mUsb3Instance before dereferencing it 

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
This commit is contained in:
Star Zeng 2018-02-09 10:25:12 +08:00
parent c9faac275b
commit 6ef394ffe2
1 changed files with 1 additions and 1 deletions
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2
SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Dxe.c
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@ -443,7 +443,7 @@ DebugCommunicationUsb3DxeConstructor (
}
Done:
if (mUsb3Instance->Ready && (mUsb3Instance->PciIoEvent == 0)) {
if ((mUsb3Instance != NULL) && mUsb3Instance->Ready && (mUsb3Instance->PciIoEvent == 0)) {
Status = Usb3NamedEventListen (
&gEfiPciIoProtocolGuid,
TPL_NOTIFY,