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ArmPkg/BdsLib: Prevent a hang in BdsConnectDevicePath() when a sub-device path is not found

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Some device paths were making BdsConnectDevicePath() hang.
To prevent these hangs we check if the handle returned by
gBS->LocateDevicePath() is the same after each iteration.

An example of a device path that hangs:
PciRoot(0x0)/Pci(0x1,0x0)/USB(0x0,0x0)/USB(0x3,0x0)/HD(...)
The connect controller function manages to find PciRoot()/Pci(0x1,0x0)
but the USB driver does not produce USB(0x0,0x0)/USB(0x3,0x0) and
returns EFI_SUCCESS on its initialization.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15835 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin
2014-08-19 13:35:14 +00:00
committed by oliviermartin
parent 5e6322a530
commit 04ad241e20
3 changed files with 23 additions and 10 deletions
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1
ArmPkg/Library/BdsLib/BdsHelper.c
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@@ -14,7 +14,6 @@
#include "BdsInternal.h"
#include <Library/DxeServicesTableLib.h>
#include <Library/HobLib.h>
#include <Library/TimerLib.h>
#include <Library/PrintLib.h>