MMIOM_STATUS Return Value - rc

rc (ULONG)

Return codes indicating success or failure:

MMIO_SUCCESS

The request was successful.
MMIO_ERROR
An error code is returned.
MMIOERR_MISSING_FLAG
A required flag was not supplied with the command.
MMIOERR_INVALID_ITEM_FLAG
One or more of the item flags specified are invalid for this command.

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