For Help: SymbolicName problem in Virtual USB Bus driver development for windows XP.

NTDEV
1

Dear All,

I am developing a Virtual USB Bus Driver.
My driver will register GUID_CLASS_USB_DEVICE device interface for every device it enumerates,but the ExtPropDescSemaphore and SymbolicName registry entries were not created under Device Parameters Key.

After receiving IRP_MN_START for a PDO it will register GUID_CLASS_USB_DEVICE Interface and enables it.Please let me know is there anything wrong in creating Interface.The two calls for creating Interface and enabling are completing successsfully.

Does anything more to do for creating the Registry Entries ExtPropDescSemaphore and SymbolicName under Device Parameters Key.

Please specify the Proper Steps for registering this Interface , Enabling It and creating Registry Entries for SymbolicName.

Thanks,
Ravinder Are

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2

> My driver will register GUID_CLASS_USB_DEVICE device interface for every

device it enumerates,but the ExtPropDescSemaphore and SymbolicName
registry entries were not created under Device Parameters Key.

So what? How do they relate to device interface?

–
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
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http://www.storagecraft.com