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[NTOSKRNL]

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- Create a volatile device tree during 1st stage so the new HAL that's loaded in 2nd stage can do proper enumeration without phantom devices from the old HAL

svn path=/trunk/; revision=53694
This commit is contained in:
Cameron Gutman 2011-09-11 17:26:01 +00:00
parent 2817ba1e7e
commit ff75ae1b72
1 changed files with 9 additions and 4 deletions
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13
reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
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@ -22,6 +22,7 @@ KGUARDED_MUTEX PpDeviceReferenceTableLock;
RTL_AVL_TABLE PpDeviceReferenceTable;
extern ULONG ExpInitializationPhase;
extern BOOLEAN ExpInTextModeSetup;
extern BOOLEAN PnpSystemInit;
/* DATA **********************************************************************/
@ -1049,6 +1050,10 @@ IopCreateDeviceKeyPath(IN PCUNICODE_STRING RegistryPath,
/* Assume failure */
*Handle = NULL;
/* Create a volatile device tree in 1st stage so we have a clean slate
* for enumeration using the correct HAL (chosen in 1st stage setup) */
if (ExpInTextModeSetup) CreateOptions |= REG_OPTION_VOLATILE;
/* Open root key for device instances */
Status = IopOpenRegistryKeyEx(&hParent, NULL, &EnumU, KEY_CREATE_SUB_KEY);
if (!NT_SUCCESS(Status))
@ -1143,7 +1148,7 @@ IopSetDeviceInstanceData(HANDLE InstanceKey,
&ObjectAttributes,
0,
NULL,
0,
REG_OPTION_VOLATILE,
NULL);
if (NT_SUCCESS(Status))
{
@ -2638,7 +2643,7 @@ IopEnumerateDetectedDevices(
&ObjectAttributes,
0,
NULL,
REG_OPTION_NON_VOLATILE,
ExpInTextModeSetup ? REG_OPTION_VOLATILE : 0,
NULL);
if (!NT_SUCCESS(Status))
{
@ -2654,7 +2659,7 @@ IopEnumerateDetectedDevices(
&ObjectAttributes,
0,
NULL,
REG_OPTION_NON_VOLATILE,
ExpInTextModeSetup ? REG_OPTION_VOLATILE : 0,
NULL);
ZwClose(hLevel1Key);
if (!NT_SUCCESS(Status))
@ -3898,7 +3903,7 @@ IoOpenDeviceRegistryKey(IN PDEVICE_OBJECT DeviceObject,
InitializeObjectAttributes(&ObjectAttributes, &KeyName,
OBJ_CASE_INSENSITIVE, *DevInstRegKey, NULL);
Status = ZwCreateKey(DevInstRegKey, DesiredAccess, &ObjectAttributes,
0, NULL, REG_OPTION_NON_VOLATILE, NULL);
0, NULL, ExpInTextModeSetup ? REG_OPTION_VOLATILE : 0, NULL);
ZwClose(ObjectAttributes.RootDirectory);
return Status;