X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=BeagleBoardPkg%2FInterruptDxe%2FHardwareInterrupt.c;h=c87d56406391935897906655b267d9f1b7f72b36;hp=97361ffbc1d0c0ec4a0249d9f7145f5bfb0389e8;hb=d213712d4f858efd5cb43faa39c6d940829c9363;hpb=2ef2b01e07c02db339f34004445734a2dbdd80e1;ds=sidebyside

diff --git a/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c b/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c
index 97361ffbc1..c87d564063 100644
--- a/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c
+++ b/BeagleBoardPkg/InterruptDxe/HardwareInterrupt.c
@@ -93,7 +93,6 @@ RegisterInterruptSource (
   }
 
   gRegisteredInterruptHandlers[Source] = Handler;
-
   return This->EnableInterruptSource(This, Source);
 }
 
@@ -235,12 +234,16 @@ IrqInterruptHandler (
   
   Vector = MmioRead32(INTCPS_SIR_IRQ) & INTCPS_SIR_IRQ_MASK;
 
+  // Needed to prevent infinite nesting if Time Driver lowers TPL
+  MmioWrite32(INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);
+
   InterruptHandler = gRegisteredInterruptHandlers[Vector];
   if (InterruptHandler != NULL) {
     // Call the registered interrupt handler.
     InterruptHandler(Vector, SystemContext);
   }
   
+  // Needed to clear after running the handler
   MmioWrite32(INTCPS_CONTROL, INTCPS_CONTROL_NEWIRQAGR);
 }