Change back the TPL of PCD from TPL_CALLBACK to TPL_NOTIFY because the following...

When we manually connect a device path mapping to the serial terminal with non-default band rate, the SerialIo driver would Reinstall its device path protocol eventually causing ConSplitter::DriverBindingStart() to run and finally would call PcdGet32 (PcdConOutColumn) in ConsplitterSetConsoleOutMode().
Since SerialIo driver raises TPL to TPL_NOTIFY initially, the call to PcdGet32 would cause TPL assertion if TPL of PCD is TPL_CALLBACK.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10188 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
index c1e4117f494c35f5b9edb7aeaf784dd3a3be4aef..363a949ea599951315b56ba81421cfccc3a2bc81 100644 (file)
--- a/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
+++ b/MdeModulePkg/Universal/PCD/Dxe/Pcd.c
@@ -26,7 +26,7 @@ EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZ
 ///\r
 /// PCD database lock.\r
 ///\r
-EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_CALLBACK);\r
+EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_NOTIFY);\r
 \r
 ///\r
 /// PCD_PROTOCOL the EDKII native implementation which support dynamic \r