ArmPlatformPkg: Actually disable PL031 interrupts

[mirror_edk2.git] / ArmPlatformPkg / Library / PL031RealTimeClockLib / PL031RealTimeClockLib.c

diff --git a/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c b/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c
index b630a5cfbfcdcc792719976950be87d34377264f..75c95985d4707022c87da2e29c799e726aab0bce 100644 (file)
--- a/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c
+++ b/ArmPlatformPkg/Library/PL031RealTimeClockLib/PL031RealTimeClockLib.c
@@ -80,8 +80,8 @@ InitializePL031 (
   }\r
 \r
   // Ensure interrupts are masked. We do not want RTC interrupts in UEFI\r
-  if ((MmioRead32 (mPL031RtcBase + PL031_RTC_IMSC_IRQ_MASK_SET_CLEAR_REGISTER) & PL031_SET_IRQ_MASK) != PL031_SET_IRQ_MASK) {\r
-    MmioOr32 (mPL031RtcBase + PL031_RTC_IMSC_IRQ_MASK_SET_CLEAR_REGISTER, PL031_SET_IRQ_MASK);\r
+  if ((MmioRead32 (mPL031RtcBase + PL031_RTC_IMSC_IRQ_MASK_SET_CLEAR_REGISTER) & PL031_SET_IRQ_MASK) != 0) {\r
+    MmioWrite32 (mPL031RtcBase + PL031_RTC_IMSC_IRQ_MASK_SET_CLEAR_REGISTER, 0);\r
   }\r
 \r
   // Clear any existing interrupts\r