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-rw-r--r--MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
index b004212fa2..aacc67fef1 100644
--- a/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
+++ b/MdeModulePkg/Bus/Usb/UsbBusDxe/UsbEnumer.c
@@ -233,7 +233,7 @@ UsbCreateDevice (
Device->ParentAddr = ParentIf->Device->Address;
Device->ParentIf = ParentIf;
Device->ParentPort = ParentPort;
- Device->Tier = ParentIf->Device->Tier + 1;
+ Device->Tier = (UINT8)(ParentIf->Device->Tier + 1);
return Device;
}