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Sorry, most devices were reinstalled at each boot, as the calculated crc32 for the parent was changing.

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Prevent this by using only the parent InstancePath instead of the whole DEVICE_NODE structure

svn path=/trunk/; revision=18497
This commit is contained in:
Hervé Poussineau 2005-10-16 14:10:29 +00:00
parent abb25bef4f
commit 197d4d0964
1 changed files with 2 additions and 2 deletions
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4
reactos/ntoskrnl/io/pnpmgr.c
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@ -1415,8 +1415,8 @@ IopGetParentIdPrefix(
goto cleanup;
/* 2. Create the ParentIdPrefix value */
currentByte = (PBYTE)DeviceNode->Parent;
for (i = 0; i < sizeof(DEVICE_NODE); i++, currentByte++)
currentByte = (PBYTE)DeviceNode->Parent->InstancePath.Buffer;
for (i = 0; i < DeviceNode->Parent->InstancePath.Length; i++, currentByte++)
crc32 = (crc32 >> 8) ^ crc32Table[*currentByte ^ (crc32 & 0xff)];
crc32 = ~crc32;
KeyValue.Buffer = (PWSTR)ParentIdPrefixInformation->Data;