From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 12 Dec 2017 15:22:56 -0500
Subject: drm/amdgpu: drop scratch regs save and restore from GPU reset handling
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Git-commit: 88bc1e3c38aaadbedd1df96e8bbe62b06f7cda1f
Patch-mainline: v4.16-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The expectation is that the base driver doesn't mess with these.
Some components interact with these directly so let the components
handle these directly.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2896,9 +2896,7 @@ static int amdgpu_reset(struct amdgpu_de
 		r = amdgpu_suspend(adev);
 
 retry:
-		amdgpu_atombios_scratch_regs_save(adev);
 		r = amdgpu_asic_reset(adev);
-		amdgpu_atombios_scratch_regs_restore(adev);
 		/* post card */
 		amdgpu_atom_asic_init(adev->mode_info.atom_context);