Re: [RFT v2] iommu/amd: use subsys_initcall() on amdv2 iommu

From: Luis R. Rodriguez
Date: Fri Apr 08 2016 - 20:26:17 EST


On Tue, Mar 29, 2016 at 10:41 AM, Luis R. Rodriguez <mcgrof@xxxxxxxxxx> wrote:
> We need to ensure amd iommu v2 initializes before
> driver uses such as drivers/gpu/drm/amd/amdkfd/kfd_module.c,
> to do this make its init routine a subsys_initcall() which
> ensures its load init is called first than modules when
> built-in.
>
> This reverts the old work around implemented through commit
> 1bacc894c227fad8a7 ("drivers: Move iommu/ before gpu/ in Makefile"),
> instead of making the dependency implicit by linker order this
> makes the ordering requirement explicit through proper kernel
> APIs.
>
> Cc: Oded Gabbay <oded.gabbay@xxxxxxx>
> Cc: Christian KÃnig <christian.koenig@xxxxxxx>
> Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxx>

*poke*

Luis