WRITE_REGISTER_USHORT function (wdm.h)
The WRITE_REGISTER_USHORT routine dereferences the supplied pointer, inserts a memory barrier, and writes a USHORT value to the specified address.
Syntax
void WRITE_REGISTER_USHORT(
[in] volatile USHORT *Register,
[in] USHORT Value
);
Parameters
[in] Register
Pointer to the register, which must be a mapped range in memory space.
[in] Value
Specifies a USHORT value to be written to the register.
Return value
None
Remarks
This routine inserts a memory barrier into your code. This barrier guarantees that every operation that appears in the source code before the call to this routine will complete before any operation that appears after the call.
For more info about memory barriers, see KeMemoryBarrier.
Callers of WRITE_REGISTER_USHORT can be running at any IRQL, assuming the Register is resident, mapped device memory.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Available starting with Windows 2000. |
Target Platform | Universal |
Header | wdm.h (include Wdm.h, Ntddk.h, Ntifs.h, Ioaccess.h, Miniport.h, Wudfwdm.h) |
Library | NtosKrnl.lib |
DLL | NtosKrnl.exe |
IRQL | Any level (see Remarks section) |