MmioWrite32 (INTCPS_MIR(0), 0xFFFFFFFF);\r
MmioWrite32 (INTCPS_MIR(1), 0xFFFFFFFF);\r
MmioWrite32 (INTCPS_MIR(2), 0xFFFFFFFF);\r
- MmioWrite32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);\r
+ MmioOr32 (INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);\r
\r
Status = gBS->InstallMultipleProtocolInterfaces(&gHardwareInterruptHandle,\r
&gHardwareInterruptProtocolGuid, &gHardwareInterruptProtocol,\r