Add a lock to protect the critical region in Service APIs for gEfiSimpleTextOutProtoc...
authorqwang12 <qwang12@6f19259b-4bc3-4df7-8a09-765794883524>
Mon, 12 Mar 2007 09:42:34 +0000 (09:42 +0000)
committerqwang12 <qwang12@6f19259b-4bc3-4df7-8a09-765794883524>
Mon, 12 Mar 2007 09:42:34 +0000 (09:42 +0000)
commit0fe0b10e10861d69b039d0468c75ce90baf1b7b7
tree959a067ca22d9bc5805f56d8c2c7e1546519678c
parenta2fa23fee1b06fbc0fed45fff1f4afca16352f83
Add a lock to protect the critical region in Service APIs for gEfiSimpleTextOutProtocolGuid Protocol to prevent re-entrance of the same API from from different TPL level. In UEFI 2.1 spec, it is state that the service API for this Protocol is callable at EFI_TPL_NOTIFY level.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2447 6f19259b-4bc3-4df7-8a09-765794883524
EdkModulePkg/Universal/Console/GraphicsConsole/Dxe/GraphicsConsole.c