From: Ruiyu Ni <ruiyu.ni@intel.com>
To: edk2-devel@lists.01.org
Subject: [PATCH] PcAtChipsetPkg/PcRtc: Handle NULL table entry in RSDT/XSDT
Date: Mon, 14 Nov 2016 13:26:22 +0800 [thread overview]
Message-ID: <20161114052622.166556-1-ruiyu.ni@intel.com> (raw)
The ACPI code may reserve the first entry for a certain table
(might be FACS) to help with OS compatible issues.
We need to skip the NULL table entry in RSDT/XSDT.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Sean Brogan <sean.brogan@microsoft.com>
---
PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
index 2bb41e7..35e34b7 100644
--- a/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
+++ b/PcAtChipsetPkg/PcatRealTimeClockRuntimeDxe/PcRtc.c
@@ -1230,6 +1230,11 @@ ScanTableInSDT (
//
Table = 0;
CopyMem (&Table, (VOID *) (EntryBase + Index * TablePointerSize), TablePointerSize);
+
+ if (Table == NULL) {
+ continue;
+ }
+
if (Table->Signature == Signature) {
return Table;
}
--
2.9.0.windows.1
next reply other threads:[~2016-11-14 5:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-14 5:26 Ruiyu Ni [this message]
2016-11-15 1:59 ` [PATCH] PcAtChipsetPkg/PcRtc: Handle NULL table entry in RSDT/XSDT Ni, Ruiyu
2016-11-17 10:55 ` Zeng, Star
2016-11-18 1:58 ` Ni, Ruiyu
2016-11-18 2:32 ` Zeng, Star
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