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Currently restoring PCI attributes are put in child uninstall logic, if one child is uninstalled, PCI attributes are restored, it will bring problem for stopping the next child. we do not restore the PCI attributes until all child handles are uninstalled.

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Signed-off-by: Li Elvin <elvin.li@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13275 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
li-elvin
2012-05-04 12:21:41 +00:00
parent 490173cecf
commit eca7d27193
2 changed files with 108 additions and 49 deletions
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23
IntelFrameworkModulePkg/Csm/BiosThunk/VideoDxe/BiosVideo.h
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@ -1,6 +1,6 @@
/** @file
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@ -88,10 +88,6 @@ typedef struct {
//
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_LEGACY_BIOS_PROTOCOL *LegacyBios;
//
// Original PCI attributes
//
UINT64 OriginalPciAttributes;
//
// Produced Protocols
@ -484,7 +480,6 @@ BiosVideoNotifyExitBootServices (
@param ParentLegacyBios Parent LegacyBios interface
@param ParentDevicePath Parent Device Path
@param RemainingDevicePath Remaining Device Path
@param OriginalPciAttributes Original PCI Attributes
@retval EFI_SUCCESS If a child handle was added
@retval other A child handle was not added
@ -497,8 +492,7 @@ BiosVideoChildHandleInstall (
IN EFI_PCI_IO_PROTOCOL *ParentPciIo,
IN EFI_LEGACY_BIOS_PROTOCOL *ParentLegacyBios,
IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,
IN UINT64 OriginalPciAttributes
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
/**
@ -529,4 +523,17 @@ BiosVideoDeviceReleaseResource (
BIOS_VIDEO_DEV *BiosVideoPrivate
);
/**
Check if all video child handles have been uninstalled.
@param Controller Video controller handle
@return TRUE Child handles exist.
@return FALSE All video child handles have been uninstalled.
**/
BOOLEAN
HasChildHandle (
IN EFI_HANDLE Controller
);
#endif