[PATCH] Revert "drm/amdgpu/nbio7.4: add hw bug workaround for vega20"

[Kuehling, Felix]

On 2019-09-10 3:59 p.m., Russell, Kent wrote:
> This reverts commit e01f2d41895102d824c6b8f5e011dd5e286d5e8b.
>
> VG20 did not require this workaround, as the fix is in the VBIOS.
> Leave VG10/12 workaround as some older shipped cards do not have the
> VBIOS fix in place, and the kernel workaround is required in those
> situations
>
> Change-Id: I2d7c394ce9d205d97be6acfa5edc4635951fdadf
> Signed-off-by: Kent Russell <kent.russell at amd.com>

Reviewed-by: Felix Kuehling <Felix.Kuehling at amd.com>


> ---
>   drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 6 ------
>   1 file changed, 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> index 2d171bf07ad5..dafd9b7d31d3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
> @@ -308,13 +308,7 @@ static void nbio_v7_4_detect_hw_virt(struct amdgpu_device *adev)
>   
>   static void nbio_v7_4_init_registers(struct amdgpu_device *adev)
>   {
> -	uint32_t def, data;
> -
> -	def = data = RREG32_PCIE(smnPCIE_CI_CNTL);
> -	data = REG_SET_FIELD(data, PCIE_CI_CNTL, CI_SLV_ORDERING_DIS, 1);
>   
> -	if (def != data)
> -		WREG32_PCIE(smnPCIE_CI_CNTL, data);
>   }
>   
>   static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device *adev)