These functions take arguments of type PDWORD_PTR which is a
pointer to a DWORD_PTR, not a pointer to a DWORD.

Cc: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>