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Change back the TPL of PCD from TPL_CALLBACK to TPL_NOTIFY because the following issue is found: 

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
This commit is contained in:
niruiyu 2010-03-04 09:38:02 +00:00
parent 233af82b52
commit 6a429dfa5f
1 changed files with 1 additions and 1 deletions
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MdeModulePkg/Universal/PCD/Dxe/Pcd.c
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@ -26,7 +26,7 @@ EFI_GUID *TmpTokenSpaceBuffer[PEI_EXMAPPING_TABLE_SIZE + DXE_EXMAPPING_TABLE_SIZ
/// ///
/// PCD database lock. /// PCD database lock.
/// ///
EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_CALLBACK); EFI_LOCK mPcdDatabaseLock = EFI_INITIALIZE_LOCK_VARIABLE(TPL_NOTIFY);
/// ///
/// PCD_PROTOCOL the EDKII native implementation which support dynamic /// PCD_PROTOCOL the EDKII native implementation which support dynamic