From: Christian König <christian.koenig@amd.com>
Date: Mon, 16 Oct 2017 15:37:06 +0000 (+0200)
Subject: drm/amdgpu: don't flush the TLB before initializing GART
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=fa2cd036925ffea8ef4f2826734ccfa1b0528141;p=openwrt%2Fstaging%2Fblogic.git

drm/amdgpu: don't flush the TLB before initializing GART

No point in doing this.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index f4370081f6e6..fe818501c520 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -332,12 +332,13 @@ int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
 		adev->gart.pages[p] = pagelist[i];
 #endif
 
-	if (adev->gart.ptr) {
-		r = amdgpu_gart_map(adev, offset, pages, dma_addr, flags,
-			    adev->gart.ptr);
-		if (r)
-			return r;
-	}
+	if (!adev->gart.ptr)
+		return 0;
+
+	r = amdgpu_gart_map(adev, offset, pages, dma_addr, flags,
+		    adev->gart.ptr);
+	if (r)
+		return r;
 
 	mb();
 	amdgpu_gart_flush_gpu_tlb(adev, 0);