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MdeModulePkg: reset DHCP child when leaving PXE LoadFile. 

The DHCP4 can have only one configured child instance so we need to reset
the DHCP4 child when leaving PXE driver's LoadFile() function, otherwise the
other programs which also need to use DHCP4 (like HTTP boot) will be impacted.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Sriram Subramanian <sriram-s@hpe.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18615 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Fu Siyuan 2015-10-16 07:18:38 +00:00 committed by sfu5
parent fe3ca12d06
commit 30268f29bd
1 changed files with 5 additions and 0 deletions
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MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
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@ -2902,9 +2902,14 @@ EfiPxeLoadFile (
//
if (Status == EFI_SUCCESS) {
//
// The DHCP4 can have only one configured child instance so we need to stop
// reset the DHCP4 child before we return. Otherwise the other programs which
// also need to use DHCP4 will be impacted.
// The functionality of PXE Base Code protocol will not be stopped,
// when downloading is successfully.
//
Private->Dhcp4->Stop (Private->Dhcp4);
Private->Dhcp4->Configure (Private->Dhcp4, NULL);
return EFI_SUCCESS;
} else if (Status == EFI_BUFFER_TOO_SMALL) {