[PATCH 1/2] drm/amdgpu: don't clean the framebuffer for VF

From: Pixel Ding <Pixel.Ding-5C7GfCeVMHo@public.gmane.org>
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Cc: Pixel Ding <Pixel.Ding-5C7GfCeVMHo@public.gmane.org>,
	Ding.Pixel-5C7GfCeVMHo@public.gmane.org
Subject: [PATCH 1/2] drm/amdgpu: don't clean the framebuffer for VF
Date: Mon, 6 Feb 2017 14:24:59 +0800	[thread overview]
Message-ID: <1486362299-3961-1-git-send-email-Pixel.Ding@amd.com> (raw)

The SRIOV host driver cleans framebuffer for each VF, guest driver
needn't this action which costs much time on some virtualization
platform, otherwise it might get timeout to initialize.

Signed-off-by: Pixel Ding <Pixel.Ding@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
index 1e735c4..f1eb4f5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
@@ -242,7 +242,9 @@ static int amdgpufb_create(struct drm_fb_helper *helper,
 	/* setup helper */
 	rfbdev->helper.fb = fb;
 
-	memset_io(abo->kptr, 0x0, amdgpu_bo_size(abo));
+	if (!amdgpu_sriov_vf(adev)) {
+		memset_io(abo->kptr, 0x0, amdgpu_bo_size(abo));
+	}
 
 	strcpy(info->fix.id, "amdgpudrmfb");
 
-- 
2.7.4

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