From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Thu, 1 Mar 2018 11:03:27 +0100
Subject: drm/amdgpu: ignore changes of buffer function status because of GPU
 resets
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Git-commit: 380383f23594790be97639ea220e8d3e86afff85
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

When we reset the GPU we also disable/enable the SDMA, but we don't want
to change TTM idea of the VRAM size in the middle of that.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1541,7 +1541,7 @@ void amdgpu_ttm_set_buffer_funcs_status(
 	struct ttm_mem_type_manager *man = &adev->mman.bdev.man[TTM_PL_VRAM];
 	uint64_t size;
 
-	if (!adev->mman.initialized)
+	if (!adev->mman.initialized || adev->in_gpu_reset)
 		return;
 
 	/* this just adjusts TTM size idea, which sets lpfn to the correct value */