[PATCH] drm/amdgpu: Remove ATC L2 access for MMHUB 2.1.x

[Greg KH]

On Tue, Oct 18, 2022 at 10:17:24AM +0530, Lijo Lazar wrote:
> MMHUB 2.1.x versions don't have ATCL2. Remove accesses to ATCL2 registers.
> 
> Since they are non-existing registers, read access will cause a
> 'Completer Abort' and gets reported when AER is enabled with the below patch.
> Tagging with the patch so that this is backported along with it.
> 
> Fixes: 8795e182b02d ("PCI/portdrv: Don't disable AER reporting in get_port_device_capability()")
> 
> Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c | 28 +++++++------------------
>  1 file changed, 8 insertions(+), 20 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>